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import pam-1.3.1-25.el8

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c8 imports/c8/pam-1.3.1-25.el8
CentOS Sources 2 years ago committed by MSVSphere Packaging Team
commit 675fe283df
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.gitignore vendored
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SOURCES/Linux-PAM-1.3.1.tar.xz
SOURCES/pam-redhat-0.99.11.tar.bz2

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.pam.metadata
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e89b6d279c9bf8cb495dfc0b3f3931eb50f818e9 SOURCES/Linux-PAM-1.3.1.tar.xz
42206fe8319723ef23ab646b2eab496c86de3f5b SOURCES/pam-redhat-0.99.11.tar.bz2

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SOURCES/Linux-PAM-1.3.1.tar.xz.asc
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iD8DBQBa/r62bRp/BS5ZJLsRArnKAJ9pGaJHpsEsbOVa5dBQLHYC4DhPuACeJNrg
+DaNc8W13E4Z2ZEUSsgUGe4=
=aSTW
-----END PGP SIGNATURE-----

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SOURCES/config-util.5
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.TH SYSTEM-AUTH 5 "2006 Feb 3" "Red Hat" "Linux-PAM Manual"
.SH NAME
config-util \- Common PAM configuration file for configuration utilities
.SH SYNOPSIS
.B /etc/pam.d/config-util
.sp 2
.SH DESCRIPTION
The purpose of this configuration file is to provide common
configuration file for all configuration utilities which must be run
from the supervisor account and use the userhelper wrapper application.
.sp
The
.BR config-util
configuration file is included from all individual configuration
files of such utilities with the help of the
.BR include
directive.
There are not usually any other modules in the individual configuration
files of these utilities.
.sp
It is possible for example to modify duration of the validity of the
authentication timestamp there. See
.BR pam_timestamp(8)
for details.
.SH BUGS
.sp 2
None known.
.SH "SEE ALSO"
pam(8), config-util(5), pam_timestamp(8)

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SOURCES/config-util.pamd
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#%PAM-1.0
auth sufficient pam_rootok.so
auth sufficient pam_timestamp.so
auth include system-auth
account required pam_permit.so
session required pam_permit.so
session optional pam_xauth.so
session optional pam_timestamp.so

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SOURCES/dlopen.sh
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#!/bin/sh
tempdir=`mktemp -d /tmp/dlopenXXXXXX`
test -n "$tempdir" || exit 1
cat >> $tempdir/dlopen.c << _EOF
#include <dlfcn.h>
#include <stdio.h>
#include <limits.h>
#include <sys/stat.h>
/* Simple program to see if dlopen() would succeed. */
int main(int argc, char **argv)
{
int i;
struct stat st;
char buf[PATH_MAX];
for (i = 1; i < argc; i++) {
if (dlopen(argv[i], RTLD_NOW)) {
fprintf(stdout, "dlopen() of \"%s\" succeeded.\n",
argv[i]);
} else {
snprintf(buf, sizeof(buf), "./%s", argv[i]);
if ((stat(buf, &st) == 0) && dlopen(buf, RTLD_NOW)) {
fprintf(stdout, "dlopen() of \"./%s\" "
"succeeded.\n", argv[i]);
} else {
fprintf(stdout, "dlopen() of \"%s\" failed: "
"%s\n", argv[i], dlerror());
return 1;
}
}
}
return 0;
}
_EOF
for arg in $@ ; do
case "$arg" in
"")
;;
-I*|-D*|-f*|-m*|-g*|-O*|-W*)
cflags="$cflags $arg"
;;
-l*|-L*)
ldflags="$ldflags $arg"
;;
/*)
modules="$modules $arg"
;;
*)
modules="$modules $arg"
;;
esac
done
${CC:-gcc} $RPM_OPT_FLAGS $CFLAGS -o $tempdir/dlopen $cflags $tempdir/dlopen.c $ldflags -ldl
retval=0
for module in $modules ; do
case "$module" in
"")
;;
/*)
$tempdir/dlopen "$module"
retval=$?
;;
*)
$tempdir/dlopen ./"$module"
retval=$?
;;
esac
done
rm -f $tempdir/dlopen $tempdir/dlopen.c
rmdir $tempdir
exit $retval

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SOURCES/fingerprint-auth.pamd
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#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authselect is run.
auth required pam_env.so
auth sufficient pam_fprintd.so
auth required pam_deny.so
account required pam_unix.so
account sufficient pam_localuser.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
-session optional pam_systemd.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so

339
SOURCES/gpl-2.0.txt
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GNU GENERAL PUBLIC LICENSE
Version 2, June 1991
Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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Also add information on how to contact you by electronic and paper mail.
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You should also get your employer (if you work as a programmer) or your
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Yoyodyne, Inc., hereby disclaims all copyright interest in the program
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Public License instead of this License.

5
SOURCES/other.pamd
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#%PAM-1.0
auth required pam_deny.so
account required pam_deny.so
password required pam_deny.so
session required pam_deny.so

26
SOURCES/pam-1.1.0-console-nochmod.patch
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diff -up Linux-PAM-1.1.0/modules/pam_console/console.handlers.nochmod Linux-PAM-1.1.0/modules/pam_console/console.handlers
--- Linux-PAM-1.1.0/modules/pam_console/console.handlers.nochmod 2008-12-16 13:37:52.000000000 +0100
+++ Linux-PAM-1.1.0/modules/pam_console/console.handlers 2009-09-01 17:20:08.000000000 +0200
@@ -15,5 +15,3 @@
# touch unlock wait /var/run/console-unlocked
console consoledevs tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]+\.[0-9]+ :[0-9]+
-/sbin/pam_console_apply lock logfail wait -t tty -s
-/sbin/pam_console_apply unlock logfail wait -r -t tty -s
diff -up Linux-PAM-1.1.0/modules/pam_console/Makefile.am.nochmod Linux-PAM-1.1.0/modules/pam_console/Makefile.am
--- Linux-PAM-1.1.0/modules/pam_console/Makefile.am.nochmod 2008-12-16 13:37:52.000000000 +0100
+++ Linux-PAM-1.1.0/modules/pam_console/Makefile.am 2009-09-01 17:42:47.000000000 +0200
@@ -38,7 +38,6 @@ sbin_PROGRAMS = pam_console_apply
secureconf_DATA = console.perms console.handlers
-permsd_DATA = 50-default.perms
FLEX_OPTS = -Cr
BISON_OPTS = -d
@@ -62,4 +61,5 @@ configfile.c: configfile.tab.c configfil
install-data-local:
mkdir -p $(DESTDIR)$(secureconfdir)/console.apps
+ mkdir -p $(DESTDIR)$(permsddir)
mkdir -m $(LOCKMODE) -p -p $(DESTDIR)$(LOCKDIR)

12
SOURCES/pam-1.1.0-notally.patch
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diff -up Linux-PAM-1.1.0/modules/Makefile.am.notally Linux-PAM-1.1.0/modules/Makefile.am
--- Linux-PAM-1.1.0/modules/Makefile.am.notally 2009-07-27 17:39:25.000000000 +0200
+++ Linux-PAM-1.1.0/modules/Makefile.am 2009-09-01 17:40:16.000000000 +0200
@@ -10,7 +10,7 @@ SUBDIRS = pam_access pam_cracklib pam_de
pam_mkhomedir pam_motd pam_namespace pam_nologin \
pam_permit pam_pwhistory pam_rhosts pam_rootok pam_securetty \
pam_selinux pam_sepermit pam_shells pam_stress \
- pam_succeed_if pam_tally pam_tally2 pam_time pam_timestamp \
+ pam_succeed_if pam_time pam_timestamp \
pam_tty_audit pam_umask \
pam_unix pam_userdb pam_warn pam_wheel pam_xauth

12
SOURCES/pam-1.1.1-console-errmsg.patch
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diff -up Linux-PAM-1.1.1/modules/pam_console/pam_console_apply.c.errmsg Linux-PAM-1.1.1/modules/pam_console/pam_console_apply.c
--- Linux-PAM-1.1.1/modules/pam_console/pam_console_apply.c.errmsg 2008-12-16 13:37:52.000000000 +0100
+++ Linux-PAM-1.1.1/modules/pam_console/pam_console_apply.c 2014-06-19 13:23:28.948343737 +0200
@@ -65,7 +65,7 @@ parse_files(void)
on system locale */
oldlocale = setlocale(LC_COLLATE, "C");
- rc = glob(PERMS_GLOB, GLOB_NOCHECK, NULL, &globbuf);
+ rc = glob(PERMS_GLOB, 0, NULL, &globbuf);
setlocale(LC_COLLATE, oldlocale);
if (rc)
return;

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SOURCES/pam-1.1.3-nouserenv.patch
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diff -up pam/modules/pam_env/pam_env.c.nouserenv pam/modules/pam_env/pam_env.c
--- pam/modules/pam_env/pam_env.c.nouserenv 2010-10-20 09:59:30.000000000 +0200
+++ pam/modules/pam_env/pam_env.c 2010-11-01 14:42:01.000000000 +0100
@@ -10,7 +10,7 @@
#define DEFAULT_READ_ENVFILE 1
#define DEFAULT_USER_ENVFILE ".pam_environment"
-#define DEFAULT_USER_READ_ENVFILE 1
+#define DEFAULT_USER_READ_ENVFILE 0
#include "config.h"
diff -up pam/modules/pam_env/pam_env.8.xml.nouserenv pam/modules/pam_env/pam_env.8.xml
--- pam/modules/pam_env/pam_env.8.xml.nouserenv 2010-10-20 09:59:30.000000000 +0200
+++ pam/modules/pam_env/pam_env.8.xml 2010-11-01 14:42:01.000000000 +0100
@@ -147,7 +147,10 @@
<listitem>
<para>
Turns on or off the reading of the user specific environment
- file. 0 is off, 1 is on. By default this option is on.
+ file. 0 is off, 1 is on. By default this option is off as user
+ supplied environment variables in the PAM environment could affect
+ behavior of subsequent modules in the stack without the consent
+ of the system administrator.
</para>
</listitem>
</varlistentry>

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SOURCES/pam-1.1.6-limits-user.patch
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diff -up Linux-PAM-1.1.6/modules/pam_limits/limits.conf.limits Linux-PAM-1.1.6/modules/pam_limits/limits.conf
--- Linux-PAM-1.1.6/modules/pam_limits/limits.conf.limits 2012-08-15 13:08:43.000000000 +0200
+++ Linux-PAM-1.1.6/modules/pam_limits/limits.conf 2013-03-14 16:43:37.615087671 +0100
@@ -1,5 +1,16 @@
# /etc/security/limits.conf
#
+#This file sets the resource limits for the users logged in via PAM.
+#It does not affect resource limits of the system services.
+#
+#Also note that configuration files in /etc/security/limits.d directory,
+#which are read in alphabetical order, override the settings in this
+#file in case the domain is the same or more specific.
+#That means for example that setting a limit for wildcard domain here
+#can be overriden with a wildcard setting in a config file in the
+#subdirectory, but a user specific setting here can be overriden only
+#with a user specific setting in the subdirectory.
+#
#Each line describes a limit for a user in the form:
#
#<domain> <type> <item> <value>

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SOURCES/pam-1.1.8-audit-user-mgmt.patch
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diff -up Linux-PAM-1.1.8/modules/pam_tally2/pam_tally2.c.audit-user-mgmt Linux-PAM-1.1.8/modules/pam_tally2/pam_tally2.c
--- Linux-PAM-1.1.8/modules/pam_tally2/pam_tally2.c.audit-user-mgmt 2013-06-18 16:11:21.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_tally2/pam_tally2.c 2014-10-17 12:09:12.965490940 +0200
@@ -997,9 +997,9 @@ main( int argc UNUSED, char **argv )
#ifdef HAVE_LIBAUDIT
char buf[64];
int audit_fd = audit_open();
- snprintf(buf, sizeof(buf), "pam_tally2 uid=%u reset=%hu", uid, cline_reset);
- audit_log_user_message(audit_fd, AUDIT_USER_ACCT,
- buf, NULL, NULL, ttyname(STDIN_FILENO), 1);
+ snprintf(buf, sizeof(buf), "pam_tally2 reset=%hu", cline_reset);
+ audit_log_acct_message(audit_fd, AUDIT_USER_MGMT, NULL,
+ buf, NULL, uid, NULL, NULL, ttyname(STDIN_FILENO), 1);
if (audit_fd >=0)
close(audit_fd);
#endif
@@ -1040,11 +1040,10 @@ main( int argc UNUSED, char **argv )
}
else if ( !cline_reset ) {
#ifdef HAVE_LIBAUDIT
- char buf[64];
int audit_fd = audit_open();
- snprintf(buf, sizeof(buf), "pam_tally2 uid=all reset=0");
- audit_log_user_message(audit_fd, AUDIT_USER_ACCT,
- buf, NULL, NULL, ttyname(STDIN_FILENO), 1);
+ audit_log_acct_message(audit_fd, AUDIT_USER_MGMT, NULL,
+ "pam_tally2-reset-all-accts reset=0", "*", -1,
+ NULL, NULL, ttyname(STDIN_FILENO), 1);
if (audit_fd >=0)
close(audit_fd);
#endif

88
SOURCES/pam-1.1.8-full-relro.patch
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@ -0,0 +1,88 @@
diff -up Linux-PAM-1.1.8/modules/pam_console/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_console/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_console/Makefile.am.relro 2014-08-13 16:02:49.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_console/Makefile.am 2014-09-10 17:14:33.245554314 +0200
@@ -33,6 +33,8 @@ pam_console_la_LIBADD = -L$(top_builddir
pam_console_apply_LDADD = -L$(top_builddir)/libpam -lpam
+pam_console_apply_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
+
securelib_LTLIBRARIES = pam_console.la
sbin_PROGRAMS = pam_console_apply
@@ -47,7 +49,7 @@ pam_console_apply_SOURCES = pam_console_
configfile.c configfile.h hashtable.c hashtable.h hashtable_private.h
pam_console_la_CFLAGS = $(AM_CFLAGS)
-pam_console_apply_CFLAGS = $(AM_CFLAGS)
+pam_console_apply_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@
configfile.tab.c: configfile.y
$(YACC) $(BISON_OPTS) -o $@ -p _pc_yy $<
diff -up Linux-PAM-1.1.8/modules/pam_filter/upperLOWER/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_filter/upperLOWER/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_filter/upperLOWER/Makefile.am.relro 2014-09-10 17:17:20.273401344 +0200
+++ Linux-PAM-1.1.8/modules/pam_filter/upperLOWER/Makefile.am 2014-09-10 17:17:07.857115369 +0200
@@ -9,7 +9,7 @@ securelibfilterdir = $(SECUREDIR)/pam_fi
AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
-I$(srcdir)/.. @PIE_CFLAGS@
-AM_LDFLAGS = @PIE_LDFLAGS@
+AM_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
LDADD = $(top_builddir)/libpam/libpam.la
securelibfilter_PROGRAMS = upperLOWER
diff -up Linux-PAM-1.1.8/modules/pam_mkhomedir/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_mkhomedir/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_mkhomedir/Makefile.am.relro 2013-06-18 16:11:21.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_mkhomedir/Makefile.am 2014-09-10 17:18:42.922304935 +0200
@@ -30,6 +30,8 @@ endif
sbin_PROGRAMS = mkhomedir_helper
mkhomedir_helper_SOURCES = mkhomedir_helper.c
+mkhomedir_helper_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@
+mkhomedir_helper_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
mkhomedir_helper_LDADD = $(top_builddir)/libpam/libpam.la
if ENABLE_REGENERATE_MAN
diff -up Linux-PAM-1.1.8/modules/pam_tally2/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_tally2/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_tally2/Makefile.am.relro 2013-06-18 16:11:21.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_tally2/Makefile.am 2014-09-10 17:22:04.339944040 +0200
@@ -26,6 +26,8 @@ if HAVE_VERSIONING
pam_tally2_la_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
endif
+pam_tally2_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@
+pam_tally2_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
pam_tally2_LDADD = $(top_builddir)/libpam/libpam.la $(LIBAUDIT)
securelib_LTLIBRARIES = pam_tally2.la
diff -up Linux-PAM-1.1.8/modules/pam_timestamp/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_timestamp/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_timestamp/Makefile.am.relro 2013-06-18 16:11:21.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_timestamp/Makefile.am 2014-08-13 16:02:49.906688139 +0200
@@ -36,7 +36,7 @@ pam_timestamp_la_CFLAGS = $(AM_CFLAGS)
pam_timestamp_check_SOURCES = pam_timestamp_check.c
pam_timestamp_check_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@
pam_timestamp_check_LDADD = $(top_builddir)/libpam/libpam.la
-pam_timestamp_check_LDFLAGS = @PIE_LDFLAGS@
+pam_timestamp_check_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
hmacfile_SOURCES = hmacfile.c hmacsha1.c sha1.c
hmacfile_LDADD = $(top_builddir)/libpam/libpam.la
diff -up Linux-PAM-1.1.8/modules/pam_unix/Makefile.am.relro Linux-PAM-1.1.8/modules/pam_unix/Makefile.am
--- Linux-PAM-1.1.8/modules/pam_unix/Makefile.am.relro 2013-06-18 16:11:21.000000000 +0200
+++ Linux-PAM-1.1.8/modules/pam_unix/Makefile.am 2014-08-13 16:02:49.906688139 +0200
@@ -55,13 +55,13 @@ bigcrypt_LDADD = @LIBCRYPT@
unix_chkpwd_SOURCES = unix_chkpwd.c md5_good.c md5_broken.c bigcrypt.c \
passverify.c
unix_chkpwd_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@ -DHELPER_COMPILE=\"unix_chkpwd\"
-unix_chkpwd_LDFLAGS = @PIE_LDFLAGS@
+unix_chkpwd_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
unix_chkpwd_LDADD = @LIBCRYPT@ @LIBSELINUX@ @LIBAUDIT@
unix_update_SOURCES = unix_update.c md5_good.c md5_broken.c bigcrypt.c \
passverify.c
unix_update_CFLAGS = $(AM_CFLAGS) @PIE_CFLAGS@ -DHELPER_COMPILE=\"unix_update\"
-unix_update_LDFLAGS = @PIE_LDFLAGS@
+unix_update_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
unix_update_LDADD = @LIBCRYPT@ @LIBSELINUX@
if ENABLE_REGENERATE_MAN

23
SOURCES/pam-1.2.0-redhat-modules.patch
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@ -0,0 +1,23 @@
diff -up Linux-PAM-1.2.0/configure.ac.redhat-modules Linux-PAM-1.2.0/configure.ac
--- Linux-PAM-1.2.0/configure.ac.redhat-modules 2015-03-25 16:50:10.000000000 +0100
+++ Linux-PAM-1.2.0/configure.ac 2015-05-15 15:46:50.996074677 +0200
@@ -616,6 +616,8 @@ AC_CONFIG_FILES([Makefile libpam/Makefil
libpam_misc/Makefile conf/Makefile conf/pam_conv1/Makefile \
po/Makefile.in \
modules/Makefile \
+ modules/pam_chroot/Makefile modules/pam_console/Makefile \
+ modules/pam_postgresok/Makefile \
modules/pam_access/Makefile modules/pam_cracklib/Makefile \
modules/pam_debug/Makefile modules/pam_deny/Makefile \
modules/pam_echo/Makefile modules/pam_env/Makefile \
diff -up Linux-PAM-1.2.0/modules/Makefile.am.redhat-modules Linux-PAM-1.2.0/modules/Makefile.am
--- Linux-PAM-1.2.0/modules/Makefile.am.redhat-modules 2015-03-24 13:02:32.000000000 +0100
+++ Linux-PAM-1.2.0/modules/Makefile.am 2015-05-15 15:46:50.995074654 +0200
@@ -3,6 +3,7 @@
#
SUBDIRS = pam_access pam_cracklib pam_debug pam_deny pam_echo \
+ pam_chroot pam_console pam_postgresok \
pam_env pam_exec pam_faildelay pam_filter pam_ftp \
pam_group pam_issue pam_keyinit pam_lastlog pam_limits \
pam_listfile pam_localuser pam_loginuid pam_mail \

73
SOURCES/pam-1.2.0-unix-no-fallback.patch
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@ -0,0 +1,73 @@
diff -up Linux-PAM-1.2.0/modules/pam_unix/pam_unix.8.xml.no-fallback Linux-PAM-1.2.0/modules/pam_unix/pam_unix.8.xml
--- Linux-PAM-1.2.0/modules/pam_unix/pam_unix.8.xml.no-fallback 2015-04-27 16:38:03.000000000 +0200
+++ Linux-PAM-1.2.0/modules/pam_unix/pam_unix.8.xml 2015-05-15 15:54:21.524440864 +0200
@@ -284,11 +284,10 @@
<listitem>
<para>
When a user changes their password next,
- encrypt it with the SHA256 algorithm. If the
- SHA256 algorithm is not known to the <citerefentry>
+ encrypt it with the SHA256 algorithm. The
+ SHA256 algorithm must be supported by the <citerefentry>
<refentrytitle>crypt</refentrytitle><manvolnum>3</manvolnum>
- </citerefentry> function,
- fall back to MD5.
+ </citerefentry> function.
</para>
</listitem>
</varlistentry>
@@ -299,11 +298,10 @@
<listitem>
<para>
When a user changes their password next,
- encrypt it with the SHA512 algorithm. If the
- SHA512 algorithm is not known to the <citerefentry>
+ encrypt it with the SHA512 algorithm. The
+ SHA512 algorithm must be supported by the <citerefentry>
<refentrytitle>crypt</refentrytitle><manvolnum>3</manvolnum>
- </citerefentry> function,
- fall back to MD5.
+ </citerefentry> function.
</para>
</listitem>
</varlistentry>
@@ -314,11 +312,10 @@
<listitem>
<para>
When a user changes their password next,
- encrypt it with the blowfish algorithm. If the
- blowfish algorithm is not known to the <citerefentry>
+ encrypt it with the blowfish algorithm. The
+ blowfish algorithm must be supported by the <citerefentry>
<refentrytitle>crypt</refentrytitle><manvolnum>3</manvolnum>
- </citerefentry> function,
- fall back to MD5.
+ </citerefentry> function.
</para>
</listitem>
</varlistentry>
diff -up Linux-PAM-1.2.0/modules/pam_unix/passverify.c.no-fallback Linux-PAM-1.2.0/modules/pam_unix/passverify.c
--- Linux-PAM-1.2.0/modules/pam_unix/passverify.c.no-fallback 2015-05-15 15:54:21.525440887 +0200
+++ Linux-PAM-1.2.0/modules/pam_unix/passverify.c 2015-05-15 15:57:23.138613273 +0200
@@ -437,10 +437,9 @@ PAMH_ARG_DECL(char * create_password_has
sp = crypt(password, salt);
#endif
if (!sp || strncmp(algoid, sp, strlen(algoid)) != 0) {
- /* libxcrypt/libc doesn't know the algorithm, use MD5 */
+ /* libxcrypt/libc doesn't know the algorithm, error out */
pam_syslog(pamh, LOG_ERR,
- "Algo %s not supported by the crypto backend, "
- "falling back to MD5\n",
+ "Algo %s not supported by the crypto backend.\n",
on(UNIX_BLOWFISH_PASS, ctrl) ? "blowfish" :
on(UNIX_SHA256_PASS, ctrl) ? "sha256" :
on(UNIX_SHA512_PASS, ctrl) ? "sha512" : algoid);
@@ -450,7 +449,7 @@ PAMH_ARG_DECL(char * create_password_has
#ifdef HAVE_CRYPT_R
free(cdata);
#endif
- return crypt_md5_wrapper(password);
+ return NULL;
}
sp = x_strdup(sp);
#ifdef HAVE_CRYPT_R

9
SOURCES/pam-1.2.1-console-devname.patch
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@ -0,0 +1,9 @@
diff -up Linux-PAM-1.2.1/modules/pam_console/console.handlers.devname Linux-PAM-1.2.1/modules/pam_console/console.handlers
--- Linux-PAM-1.2.1/modules/pam_console/console.handlers.devname 2015-10-16 14:15:48.000000000 +0200
+++ Linux-PAM-1.2.1/modules/pam_console/console.handlers 2016-02-05 17:47:26.056787517 +0100
@@ -14,4 +14,4 @@
# echo lock wait Locking console for user on tty
# touch unlock wait /var/run/console-unlocked
-console consoledevs tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]+\.[0-9]+ :[0-9]+
+console consoledevs /dev/tty[0-9][0-9]* tty[0-9][0-9]* vc/[0-9][0-9]* :[0-9]+\.[0-9]+ :[0-9]+

133
SOURCES/pam-1.2.1-faillock-admin-group.patch
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@ -0,0 +1,133 @@
diff -up Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c.admin-group Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c
--- Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c.admin-group 2016-04-04 16:37:38.696260359 +0200
+++ Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.c 2017-08-21 16:40:01.624706864 +0200
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010 Tomas Mraz <tmraz@redhat.com>
+ * Copyright (c) 2010, 2017 Tomas Mraz <tmraz@redhat.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -78,9 +78,11 @@ struct options {
unsigned int root_unlock_time;
const char *dir;
const char *user;
+ const char *admin_group;
int failures;
uint64_t latest_time;
uid_t uid;
+ int is_admin;
uint64_t now;
};
@@ -152,6 +154,9 @@ args_parse(pam_handle_t *pamh, int argc,
opts->root_unlock_time = temp;
}
}
+ else if (strncmp(argv[i], "admin_group=", 12) == 0) {
+ opts->admin_group = argv[i] + 12;
+ }
else if (strcmp(argv[i], "preauth") == 0) {
opts->action = FAILLOCK_ACTION_PREAUTH;
}
@@ -209,6 +214,17 @@ static int get_pam_user(pam_handle_t *pa
}
opts->user = user;
opts->uid = pwd->pw_uid;
+
+ if (pwd->pw_uid == 0) {
+ opts->is_admin = 1;
+ return PAM_SUCCESS;
+ }
+
+ if (opts->admin_group && *opts->admin_group) {
+ opts->is_admin = pam_modutil_user_in_group_uid_nam(pamh,
+ pwd->pw_uid, opts->admin_group);
+ }
+
return PAM_SUCCESS;
}
@@ -239,7 +255,7 @@ check_tally(pam_handle_t *pamh, struct o
return PAM_SYSTEM_ERR;
}
- if (opts->uid == 0 && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
+ if (opts->is_admin && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
return PAM_SUCCESS;
}
@@ -262,13 +278,9 @@ check_tally(pam_handle_t *pamh, struct o
opts->failures = failures;
- if (opts->uid == 0 && !(opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
- return PAM_SUCCESS;
- }
-
if (opts->deny && failures >= opts->deny) {
- if ((opts->uid && opts->unlock_time && latest_time + opts->unlock_time < opts->now) ||
- (!opts->uid && opts->root_unlock_time && latest_time + opts->root_unlock_time < opts->now)) {
+ if ((!opts->is_admin && opts->unlock_time && latest_time + opts->unlock_time < opts->now) ||
+ (opts->is_admin && opts->root_unlock_time && latest_time + opts->root_unlock_time < opts->now)) {
#ifdef HAVE_LIBAUDIT
if (opts->action != FAILLOCK_ACTION_PREAUTH) { /* do not audit in preauth */
char buf[64];
@@ -401,7 +413,7 @@ write_tally(pam_handle_t *pamh, struct o
audit_log_user_message(audit_fd, AUDIT_ANOM_LOGIN_FAILURES, buf,
NULL, NULL, NULL, 1);
- if (opts->uid != 0 || (opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
+ if (!opts->is_admin || (opts->flags & FAILLOCK_FLAG_DENY_ROOT)) {
audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_LOCK, buf,
NULL, NULL, NULL, 1);
}
@@ -425,11 +437,11 @@ faillock_message(pam_handle_t *pamh, str
int64_t left;
if (!(opts->flags & FAILLOCK_FLAG_SILENT)) {
- if (opts->uid) {
- left = opts->latest_time + opts->unlock_time - opts->now;
+ if (opts->is_admin) {
+ left = opts->latest_time + opts->root_unlock_time - opts->now;
}
else {
- left = opts->latest_time + opts->root_unlock_time - opts->now;
+ left = opts->latest_time + opts->unlock_time - opts->now;
}
if (left > 0) {
diff -up Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml.admin-group Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml
--- Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml.admin-group 2016-05-06 15:24:10.328281818 +0200
+++ Linux-PAM-1.3.0/modules/pam_faillock/pam_faillock.8.xml 2017-08-21 16:16:09.448033843 +0200
@@ -40,6 +40,9 @@
root_unlock_time=<replaceable>n</replaceable>
</arg>
<arg choice="opt">
+ admin_group=<replaceable>name</replaceable>
+ </arg>
+ <arg choice="opt">
audit
</arg>
<arg choice="opt">
@@ -243,6 +246,20 @@
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option>admin_group=<replaceable>name</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ If a group name is specified with this option, members
+ of the group will be handled by this module the same as
+ the root account (the options <option>even_deny_root></option>
+ and <option>root_unlock_time</option> will apply to them.
+ By default the option is not set.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>

1759
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806
SOURCES/pam-1.3.0-pwhistory-helper.patch
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@ -0,0 +1,806 @@
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/Makefile.am.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/Makefile.am
--- Linux-PAM-1.3.0/modules/pam_pwhistory/Makefile.am.pwhhelper 2016-03-24 12:45:42.000000000 +0100
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/Makefile.am 2016-05-06 15:18:42.307637933 +0200
@@ -1,5 +1,6 @@
#
# Copyright (c) 2008, 2009 Thorsten Kukuk <kukuk@suse.de>
+# Copyright (c) 2013 Red Hat, Inc.
#
CLEANFILES = *~
@@ -9,25 +10,34 @@ EXTRA_DIST = README $(MANS) $(XMLS) tst-
TESTS = tst-pam_pwhistory
-man_MANS = pam_pwhistory.8
+man_MANS = pam_pwhistory.8 pwhistory_helper.8
-XMLS = README.xml pam_pwhistory.8.xml
+XMLS = README.xml pam_pwhistory.8.xml pwhistory_helper.8.xml
securelibdir = $(SECUREDIR)
secureconfdir = $(SCONFIGDIR)
-AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include
-AM_LDFLAGS = -no-undefined -avoid-version -module
+AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
+ -DPWHISTORY_HELPER=\"$(sbindir)/pwhistory_helper\"
+
+pam_pwhistory_la_LDFLAGS = -no-undefined -avoid-version -module
if HAVE_VERSIONING
- AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
+ pam_pwhistory_la_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
endif
noinst_HEADERS = opasswd.h
securelib_LTLIBRARIES = pam_pwhistory.la
-pam_pwhistory_la_LIBADD = $(top_builddir)/libpam/libpam.la @LIBCRYPT@
+pam_pwhistory_la_CFLAGS = $(AM_CFLAGS)
+pam_pwhistory_la_LIBADD = $(top_builddir)/libpam/libpam.la @LIBCRYPT@ @LIBSELINUX@
pam_pwhistory_la_SOURCES = pam_pwhistory.c opasswd.c
+sbin_PROGRAMS = pwhistory_helper
+pwhistory_helper_CFLAGS = $(AM_CFLAGS) -DHELPER_COMPILE=\"pwhistory_helper\" @PIE_CFLAGS@
+pwhistory_helper_SOURCES = pwhistory_helper.c opasswd.c
+pwhistory_helper_LDFLAGS = -Wl,-z,now @PIE_LDFLAGS@
+pwhistory_helper_LDADD = $(top_builddir)/libpam/libpam.la @LIBCRYPT@
+
if ENABLE_REGENERATE_MAN
noinst_DATA = README
README: pam_pwhistory.8.xml
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.c.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.c
--- Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.c.pwhhelper 2016-03-24 12:45:42.000000000 +0100
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.c 2016-05-06 15:18:42.307637933 +0200
@@ -1,5 +1,6 @@
/*
* Copyright (c) 2008 Thorsten Kukuk <kukuk@suse.de>
+ * Copyright (c) 2013 Red Hat, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -38,6 +39,7 @@
#endif
#include <pwd.h>
+#include <shadow.h>
#include <time.h>
#include <ctype.h>
#include <errno.h>
@@ -47,6 +49,7 @@
#include <string.h>
#include <stdlib.h>
#include <syslog.h>
+#include <stdarg.h>
#include <sys/stat.h>
#if defined (HAVE_XCRYPT_H)
@@ -55,7 +58,14 @@
#include <crypt.h>
#endif
+#ifdef HELPER_COMPILE
+#define pam_modutil_getpwnam(h,n) getpwnam(n)
+#define pam_modutil_getspnam(h,n) getspnam(n)
+#define pam_syslog(h,a,...) helper_log_err(a,__VA_ARGS__)
+#else
+#include <security/pam_modutil.h>
#include <security/pam_ext.h>
+#endif
#include <security/pam_modules.h>
#include "opasswd.h"
@@ -76,6 +86,19 @@ typedef struct {
char *old_passwords;
} opwd;
+#ifdef HELPER_COMPILE
+void
+helper_log_err(int err, const char *format, ...)
+{
+ va_list args;
+
+ va_start(args, format);
+ openlog(HELPER_COMPILE, LOG_CONS | LOG_PID, LOG_AUTHPRIV);
+ vsyslog(err, format, args);
+ va_end(args);
+ closelog();
+}
+#endif
static int
parse_entry (char *line, opwd *data)
@@ -117,8 +140,8 @@ compare_password(const char *newpass, co
}
/* Check, if the new password is already in the opasswd file. */
-int
-check_old_pass (pam_handle_t *pamh, const char *user,
+PAMH_ARG_DECL(int
+check_old_pass, const char *user,
const char *newpass, int debug)
{
int retval = PAM_SUCCESS;
@@ -128,6 +151,11 @@ check_old_pass (pam_handle_t *pamh, cons
opwd entry;
int found = 0;
+#ifndef HELPER_COMPILE
+ if (SELINUX_ENABLED)
+ return PAM_PWHISTORY_RUN_HELPER;
+#endif
+
if ((oldpf = fopen (OLD_PASSWORDS_FILE, "r")) == NULL)
{
if (errno != ENOENT)
@@ -213,9 +241,9 @@ check_old_pass (pam_handle_t *pamh, cons
return retval;
}
-int
-save_old_pass (pam_handle_t *pamh, const char *user, uid_t uid,
- const char *oldpass, int howmany, int debug UNUSED)
+PAMH_ARG_DECL(int
+save_old_pass, const char *user,
+ int howmany, int debug UNUSED)
{
char opasswd_tmp[] = TMP_PASSWORDS_FILE;
struct stat opasswd_stat;
@@ -226,10 +254,35 @@ save_old_pass (pam_handle_t *pamh, const
char *buf = NULL;
size_t buflen = 0;
int found = 0;
+ struct passwd *pwd;
+ const char *oldpass;
+
+ pwd = pam_modutil_getpwnam (pamh, user);
+ if (pwd == NULL)
+ return PAM_USER_UNKNOWN;
if (howmany <= 0)
return PAM_SUCCESS;
+#ifndef HELPER_COMPILE
+ if (SELINUX_ENABLED)
+ return PAM_PWHISTORY_RUN_HELPER;
+#endif
+
+ if ((strcmp(pwd->pw_passwd, "x") == 0) ||
+ ((pwd->pw_passwd[0] == '#') &&
+ (pwd->pw_passwd[1] == '#') &&
+ (strcmp(pwd->pw_name, pwd->pw_passwd + 2) == 0)))
+ {
+ struct spwd *spw = pam_modutil_getspnam (pamh, user);
+
+ if (spw == NULL)
+ return PAM_USER_UNKNOWN;
+ oldpass = spw->sp_pwdp;
+ }
+ else
+ oldpass = pwd->pw_passwd;
+
if (oldpass == NULL || *oldpass == '\0')
return PAM_SUCCESS;
@@ -452,7 +505,7 @@ save_old_pass (pam_handle_t *pamh, const
{
char *out;
- if (asprintf (&out, "%s:%d:1:%s\n", user, uid, oldpass) < 0)
+ if (asprintf (&out, "%s:%d:1:%s\n", user, pwd->pw_uid, oldpass) < 0)
{
retval = PAM_AUTHTOK_ERR;
if (oldpf)
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.h.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.h
--- Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.h.pwhhelper 2016-03-24 12:45:42.000000000 +0100
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/opasswd.h 2016-05-06 15:18:42.307637933 +0200
@@ -1,5 +1,6 @@
/*
* Copyright (c) 2008 Thorsten Kukuk <kukuk@suse.de>
+ * Copyright (c) 2013 Red Hat, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -36,10 +37,32 @@
#ifndef __OPASSWD_H__
#define __OPASSWD_H__
-extern int check_old_pass (pam_handle_t *pamh, const char *user,
- const char *newpass, int debug);
-extern int save_old_pass (pam_handle_t *pamh, const char *user,
- uid_t uid, const char *oldpass,
- int howmany, int debug);
+#define PAM_PWHISTORY_RUN_HELPER PAM_CRED_INSUFFICIENT
+
+#ifdef WITH_SELINUX
+#include <selinux/selinux.h>
+#define SELINUX_ENABLED is_selinux_enabled()>0
+#else
+#define SELINUX_ENABLED 0
+#endif
+
+#ifdef HELPER_COMPILE
+#define PAMH_ARG_DECL(fname, ...) fname(__VA_ARGS__)
+#define PAMH_ARG(...) __VA_ARGS__
+#else
+#define PAMH_ARG_DECL(fname, ...) fname(pam_handle_t *pamh, __VA_ARGS__)
+#define PAMH_ARG(...) pamh, __VA_ARGS__
+#endif
+
+#ifdef HELPER_COMPILE
+void
+helper_log_err(int err, const char *format, ...);
+#endif
+
+PAMH_ARG_DECL(int
+check_old_pass, const char *user, const char *newpass, int debug);
+
+PAMH_ARG_DECL(int
+save_old_pass, const char *user, int howmany, int debug);
#endif /* __OPASSWD_H__ */
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/pam_pwhistory.c.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/pam_pwhistory.c
--- Linux-PAM-1.3.0/modules/pam_pwhistory/pam_pwhistory.c.pwhhelper 2016-04-04 11:22:28.000000000 +0200
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/pam_pwhistory.c 2016-05-06 15:19:31.610785512 +0200
@@ -1,6 +1,7 @@
/*
* Copyright (c) 2008, 2012 Thorsten Kukuk
* Author: Thorsten Kukuk <kukuk@thkukuk.de>
+ * Copyright (c) 2013 Red Hat, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -46,10 +47,14 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
-#include <shadow.h>
#include <syslog.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/resource.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <fcntl.h>
#include <security/pam_modules.h>
#include <security/pam_modutil.h>
@@ -59,6 +64,7 @@
#include "opasswd.h"
#define DEFAULT_BUFLEN 2048
+#define MAX_FD_NO 20000
struct options_t {
int debug;
@@ -102,6 +108,184 @@ parse_option (pam_handle_t *pamh, const
pam_syslog (pamh, LOG_ERR, "pam_pwhistory: unknown option: %s", argv);
}
+static int
+run_save_helper(pam_handle_t *pamh, const char *user,
+ int howmany, int debug)
+{
+ int retval, child;
+ struct sigaction newsa, oldsa;
+
+ memset(&newsa, '\0', sizeof(newsa));
+ newsa.sa_handler = SIG_DFL;
+ sigaction(SIGCHLD, &newsa, &oldsa);
+
+ child = fork();
+ if (child == 0)
+ {
+ int i = 0;
+ struct rlimit rlim;
+ int dummyfds[2];
+ static char *envp[] = { NULL };
+ char *args[] = { NULL, NULL, NULL, NULL, NULL, NULL };
+
+ /* replace std file descriptors with a dummy pipe */
+ if (pipe2(dummyfds, O_NONBLOCK) == 0)
+ {
+ dup2(dummyfds[0], STDIN_FILENO);
+ dup2(dummyfds[1], STDOUT_FILENO);
+ dup2(dummyfds[1], STDERR_FILENO);
+ }
+
+ if (getrlimit(RLIMIT_NOFILE,&rlim) == 0)
+ {
+ if (rlim.rlim_max >= MAX_FD_NO)
+ rlim.rlim_max = MAX_FD_NO;
+ for (i = STDERR_FILENO + 1; i < (int)rlim.rlim_max; i++)
+ {
+ if (i != dummyfds[0])
+ close(i);
+ }
+ }
+
+ /* exec binary helper */
+ args[0] = strdup(PWHISTORY_HELPER);
+ args[1] = strdup("save");
+ args[2] = x_strdup(user);
+ asprintf(&args[3], "%d", howmany);
+ asprintf(&args[4], "%d", debug);
+
+ execve(args[0], args, envp);
+
+ _exit(PAM_SYSTEM_ERR);
+ }
+ else if (child > 0)
+ {
+ /* wait for child */
+ int rc = 0;
+ rc = waitpid(child, &retval, 0); /* wait for helper to complete */
+ if (rc < 0)
+ {
+ pam_syslog(pamh, LOG_ERR, "pwhistory_helper save waitpid returned %d: %m", rc);
+ retval = PAM_SYSTEM_ERR;
+ }
+ else if (!WIFEXITED(retval))
+ {
+ pam_syslog(pamh, LOG_ERR, "pwhistory_helper save abnormal exit: %d", retval);
+ retval = PAM_SYSTEM_ERR;
+ }
+ else
+ {
+ retval = WEXITSTATUS(retval);
+ }
+ }
+ else
+ {
+ retval = PAM_SYSTEM_ERR;
+ }
+
+ sigaction(SIGCHLD, &oldsa, NULL); /* restore old signal handler */
+
+ return retval;
+}
+
+static int
+run_check_helper(pam_handle_t *pamh, const char *user,
+ const char *newpass, int debug)
+{
+ int retval, child, fds[2];
+ struct sigaction newsa, oldsa;
+
+ /* create a pipe for the password */
+ if (pipe(fds) != 0)
+ return PAM_SYSTEM_ERR;
+
+ memset(&newsa, '\0', sizeof(newsa));
+ newsa.sa_handler = SIG_DFL;
+ sigaction(SIGCHLD, &newsa, &oldsa);
+
+ child = fork();
+ if (child == 0)
+ {
+ int i = 0;
+ struct rlimit rlim;
+ int dummyfds[2];
+ static char *envp[] = { NULL };
+ char *args[] = { NULL, NULL, NULL, NULL, NULL };
+
+ /* reopen stdin as pipe */
+ dup2(fds[0], STDIN_FILENO);
+
+ /* replace std file descriptors with a dummy pipe */
+ if (pipe2(dummyfds, O_NONBLOCK) == 0)
+ {
+ dup2(dummyfds[1], STDOUT_FILENO);
+ dup2(dummyfds[1], STDERR_FILENO);
+ }
+
+ if (getrlimit(RLIMIT_NOFILE,&rlim) == 0)
+ {
+ if (rlim.rlim_max >= MAX_FD_NO)
+ rlim.rlim_max = MAX_FD_NO;
+ for (i = STDERR_FILENO + 1; i < (int)rlim.rlim_max; i++)
+ {
+ if (i != dummyfds[0])
+ close(i);
+ }
+ }
+
+ /* exec binary helper */
+ args[0] = strdup(PWHISTORY_HELPER);
+ args[1] = strdup("check");
+ args[2] = x_strdup(user);
+ asprintf(&args[3], "%d", debug);
+
+ execve(args[0], args, envp);
+
+ _exit(PAM_SYSTEM_ERR);
+ }
+ else if (child > 0)
+ {
+ /* wait for child */
+ int rc = 0;
+ if (newpass == NULL)
+ newpass = "";
+
+ /* send the password to the child */
+ if (write(fds[1], newpass, strlen(newpass)+1) == -1)
+ {
+ pam_syslog(pamh, LOG_ERR, "Cannot send password to helper: %m");
+ retval = PAM_SYSTEM_ERR;
+ }
+ newpass = NULL;
+ close(fds[0]); /* close here to avoid possible SIGPIPE above */
+ close(fds[1]);
+ rc = waitpid(child, &retval, 0); /* wait for helper to complete */
+ if (rc < 0)
+ {
+ pam_syslog(pamh, LOG_ERR, "pwhistory_helper check waitpid returned %d: %m", rc);
+ retval = PAM_SYSTEM_ERR;
+ }
+ else if (!WIFEXITED(retval))
+ {
+ pam_syslog(pamh, LOG_ERR, "pwhistory_helper check abnormal exit: %d", retval);
+ retval = PAM_SYSTEM_ERR;
+ }
+ else
+ {
+ retval = WEXITSTATUS(retval);
+ }
+ }
+ else
+ {
+ close(fds[0]);
+ close(fds[1]);
+ retval = PAM_SYSTEM_ERR;
+ }
+
+ sigaction(SIGCHLD, &oldsa, NULL); /* restore old signal handler */
+
+ return retval;
+}
/* This module saves the current crypted password in /etc/security/opasswd
and then compares the new password with all entries in this file. */
@@ -109,7 +293,6 @@ parse_option (pam_handle_t *pamh, const
int
pam_sm_chauthtok (pam_handle_t *pamh, int flags, int argc, const char **argv)
{
- struct passwd *pwd;
const char *newpass;
const char *user;
int retval, tries;
@@ -154,31 +337,13 @@ pam_sm_chauthtok (pam_handle_t *pamh, in
return PAM_SUCCESS;
}
- pwd = pam_modutil_getpwnam (pamh, user);
- if (pwd == NULL)
- return PAM_USER_UNKNOWN;
-
- if ((strcmp(pwd->pw_passwd, "x") == 0) ||
- ((pwd->pw_passwd[0] == '#') &&
- (pwd->pw_passwd[1] == '#') &&
- (strcmp(pwd->pw_name, pwd->pw_passwd + 2) == 0)))
- {
- struct spwd *spw = pam_modutil_getspnam (pamh, user);
- if (spw == NULL)
- return PAM_USER_UNKNOWN;
+ retval = save_old_pass (pamh, user, options.remember, options.debug);
- retval = save_old_pass (pamh, user, pwd->pw_uid, spw->sp_pwdp,
- options.remember, options.debug);
- if (retval != PAM_SUCCESS)
- return retval;
- }
- else
- {
- retval = save_old_pass (pamh, user, pwd->pw_uid, pwd->pw_passwd,
- options.remember, options.debug);
- if (retval != PAM_SUCCESS)
- return retval;
- }
+ if (retval == PAM_PWHISTORY_RUN_HELPER)
+ retval = run_save_helper(pamh, user, options.remember, options.debug);
+
+ if (retval != PAM_SUCCESS)
+ return retval;
newpass = NULL;
tries = 0;
@@ -207,8 +372,11 @@ pam_sm_chauthtok (pam_handle_t *pamh, in
if (options.debug)
pam_syslog (pamh, LOG_DEBUG, "check against old password file");
- if (check_old_pass (pamh, user, newpass,
- options.debug) != PAM_SUCCESS)
+ retval = check_old_pass (pamh, user, newpass, options.debug);
+ if (retval == PAM_PWHISTORY_RUN_HELPER)
+ retval = run_check_helper(pamh, user, newpass, options.debug);
+
+ if (retval != PAM_SUCCESS)
{
if (getuid() || options.enforce_for_root ||
(flags & PAM_CHANGE_EXPIRED_AUTHTOK))
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.c.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.c
--- Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.c.pwhhelper 2016-05-06 15:18:42.308637957 +0200
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.c 2016-05-06 15:18:42.308637957 +0200
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 2013 Red Hat, Inc.
+ * Author: Tomas Mraz <tmraz@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <errno.h>
+#include <unistd.h>
+#include <signal.h>
+#include <security/_pam_types.h>
+#include <security/_pam_macros.h>
+#include "opasswd.h"
+
+#define MAXPASS 200
+
+static void
+su_sighandler(int sig)
+{
+#ifndef SA_RESETHAND
+ /* emulate the behaviour of the SA_RESETHAND flag */
+ if ( sig == SIGILL || sig == SIGTRAP || sig == SIGBUS || sig = SIGSERV ) {
+ struct sigaction sa;
+ memset(&sa, '\0', sizeof(sa));
+ sa.sa_handler = SIG_DFL;
+ sigaction(sig, &sa, NULL);
+ }
+#endif
+ if (sig > 0) {
+ _exit(sig);
+ }
+}
+
+static void
+setup_signals(void)
+{
+ struct sigaction action; /* posix signal structure */
+
+ /*
+ * Setup signal handlers
+ */
+ (void) memset((void *) &action, 0, sizeof(action));
+ action.sa_handler = su_sighandler;
+#ifdef SA_RESETHAND
+ action.sa_flags = SA_RESETHAND;
+#endif
+ (void) sigaction(SIGILL, &action, NULL);
+ (void) sigaction(SIGTRAP, &action, NULL);
+ (void) sigaction(SIGBUS, &action, NULL);
+ (void) sigaction(SIGSEGV, &action, NULL);
+ action.sa_handler = SIG_IGN;
+ action.sa_flags = 0;
+ (void) sigaction(SIGTERM, &action, NULL);
+ (void) sigaction(SIGHUP, &action, NULL);
+ (void) sigaction(SIGINT, &action, NULL);
+ (void) sigaction(SIGQUIT, &action, NULL);
+}
+
+static int
+read_passwords(int fd, int npass, char **passwords)
+{
+ int rbytes = 0;
+ int offset = 0;
+ int i = 0;
+ char *pptr;
+ while (npass > 0)
+ {
+ rbytes = read(fd, passwords[i]+offset, MAXPASS-offset);
+
+ if (rbytes < 0)
+ {
+ if (errno == EINTR) continue;
+ break;
+ }
+ if (rbytes == 0)
+ break;
+
+ while (npass > 0 && (pptr=memchr(passwords[i]+offset, '\0', rbytes))
+ != NULL)
+ {
+ rbytes -= pptr - (passwords[i]+offset) + 1;
+ i++;
+ offset = 0;
+ npass--;
+ if (rbytes > 0)
+ {
+ if (npass > 0)
+ memcpy(passwords[i], pptr+1, rbytes);
+ memset(pptr+1, '\0', rbytes);
+ }
+ }
+ offset += rbytes;
+ }
+
+ /* clear up */
+ if (offset > 0 && npass > 0)
+ memset(passwords[i], '\0', offset);
+
+ return i;
+}
+
+
+static int
+check_history(const char *user, const char *debug)
+{
+ char pass[MAXPASS + 1];
+ char *passwords[] = { pass };
+ int npass;
+ int dbg = atoi(debug); /* no need to be too fancy here */
+ int retval;
+
+ /* read the password from stdin (a pipe from the pam_pwhistory module) */
+ npass = read_passwords(STDIN_FILENO, 1, passwords);
+
+ if (npass != 1)
+ { /* is it a valid password? */
+ helper_log_err(LOG_DEBUG, "no password supplied");
+ return PAM_AUTHTOK_ERR;
+ }
+
+ retval = check_old_pass(user, pass, dbg);
+
+ memset(pass, '\0', MAXPASS); /* clear memory of the password */
+
+ return retval;
+}
+
+static int
+save_history(const char *user, const char *howmany, const char *debug)
+{
+ int num = atoi(howmany);
+ int dbg = atoi(debug); /* no need to be too fancy here */
+ int retval;
+
+ retval = save_old_pass(user, num, dbg);
+
+ return retval;
+}
+
+int
+main(int argc, char *argv[])
+{
+ const char *option;
+ const char *user;
+
+ /*
+ * Catch or ignore as many signal as possible.
+ */
+ setup_signals();
+
+ /*
+ * we establish that this program is running with non-tty stdin.
+ * this is to discourage casual use.
+ */
+
+ if (isatty(STDIN_FILENO) || argc < 4)
+ {
+ fprintf(stderr,
+ "This binary is not designed for running in this way.\n");
+ sleep(10); /* this should discourage/annoy the user */
+ return PAM_SYSTEM_ERR;
+ }
+
+ option = argv[1];
+ user = argv[2];
+
+ if (strcmp(option, "check") == 0 && argc == 4)
+ return check_history(user, argv[3]);
+ else if (strcmp(option, "save") == 0 && argc == 5)
+ return save_history(user, argv[3], argv[4]);
+
+ return PAM_SYSTEM_ERR;
+}
+
diff -up Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.8.xml.pwhhelper Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.8.xml
--- Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.8.xml.pwhhelper 2016-05-06 15:18:42.308637957 +0200
+++ Linux-PAM-1.3.0/modules/pam_pwhistory/pwhistory_helper.8.xml 2016-05-06 15:18:42.308637957 +0200
@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding='UTF-8'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+ "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+
+<refentry id="pwhistory_helper">
+
+ <refmeta>
+ <refentrytitle>pwhistory_helper</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id="pwhistory_helper-name">
+ <refname>pwhistory_helper</refname>
+ <refpurpose>Helper binary that transfers password hashes from passwd or shadow to opasswd</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <cmdsynopsis id="pwhistory_helper-cmdsynopsis">
+ <command>pwhistory_helper</command>
+ <arg choice="opt">
+ ...
+ </arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1 id="pwhistory_helper-description">
+
+ <title>DESCRIPTION</title>
+
+ <para>
+ <emphasis>pwhistory_helper</emphasis> is a helper program for the
+ <emphasis>pam_pwhistory</emphasis> module that transfers password hashes
+ from passwd or shadow file to the opasswd file and checks a password
+ supplied by user against the existing hashes in the opasswd file.
+ </para>
+
+ <para>
+ The purpose of the helper is to enable tighter confinement of
+ login and password changing services. The helper is thus called only
+ when SELinux is enabled on the system.
+ </para>
+
+ <para>
+ The interface of the helper - command line options, and input/output
+ data format are internal to the <emphasis>pam_pwhistory</emphasis>
+ module and it should not be called directly from applications.
+ </para>
+ </refsect1>
+
+ <refsect1 id='pwhistory_helper-see_also'>
+ <title>SEE ALSO</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>pam_pwhistory</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+
+ <refsect1 id='pwhistory_helper-author'>
+ <title>AUTHOR</title>
+ <para>
+ Written by Tomas Mraz based on the code originally in
+ <emphasis>pam_pwhistory and pam_unix</emphasis> modules.
+ </para>
+ </refsect1>
+
+</refentry>

16
SOURCES/pam-1.3.0-unix-nomsg.patch
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@ -0,0 +1,16 @@
diff -up Linux-PAM-1.3.0/modules/pam_unix/pam_unix_passwd.c.nomsg Linux-PAM-1.3.0/modules/pam_unix/pam_unix_passwd.c
--- Linux-PAM-1.3.0/modules/pam_unix/pam_unix_passwd.c.nomsg 2016-04-11 13:08:47.000000000 +0200
+++ Linux-PAM-1.3.0/modules/pam_unix/pam_unix_passwd.c 2017-04-20 16:51:24.853106709 +0200
@@ -687,12 +687,6 @@ pam_sm_chauthtok(pam_handle_t *pamh, int
return PAM_SUCCESS;
} else if (off(UNIX__IAMROOT, ctrl) ||
(on(UNIX_NIS, ctrl) && _unix_comesfromsource(pamh, user, 0, 1))) {
- /* instruct user what is happening */
- if (off(UNIX__QUIET, ctrl)) {
- retval = pam_info(pamh, _("Changing password for %s."), user);
- if (retval != PAM_SUCCESS)
- return retval;
- }
retval = pam_get_authtok(pamh, PAM_OLDAUTHTOK, &pass_old, NULL);
if (retval != PAM_SUCCESS) {

35
SOURCES/pam-1.3.1-audit-error.patch
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@ -0,0 +1,35 @@
From b429ea18b1c9c8953df5169c6a453b4255a6f23d Mon Sep 17 00:00:00 2001
From: Iker Pedrosa <ikerpedrosam@gmail.com>
Date: Thu, 27 Feb 2020 11:48:47 +0100
Subject: [PATCH] pam_tty_audit: if kernel audit is disabled return PAM_IGNORE
If kernel audit is disabled the socket open will return
EPROTONOSUPPORT.
Return PAM_IGNORE from pam_tty_audit and log a warning
in this situation so login is not blocked by the module.
---
modules/pam_tty_audit/pam_tty_audit.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/modules/pam_tty_audit/pam_tty_audit.c b/modules/pam_tty_audit/pam_tty_audit.c
index 7dbcada2..589c60a2 100644
--- a/modules/pam_tty_audit/pam_tty_audit.c
+++ b/modules/pam_tty_audit/pam_tty_audit.c
@@ -351,6 +351,14 @@ pam_sm_open_session (pam_handle_t *pamh, int flags, int argc, const char **argv)
fd = nl_open ();
if (fd == -1
+ && errno == EPROTONOSUPPORT)
+ {
+ pam_syslog (pamh, LOG_WARNING, "unable to open audit socket, audit not "
+ "supported; tty_audit skipped");
+ free (old_status);
+ return PAM_IGNORE;
+ }
+ else if (fd == -1
|| nl_send (fd, AUDIT_TTY_GET, 0, NULL, 0) != 0
|| nl_recv (fd, AUDIT_TTY_GET, old_status, sizeof (*old_status)) != 0)
{
--
2.25.2

88
SOURCES/pam-1.3.1-authtok-verify-fix.patch
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@ -0,0 +1,88 @@
From 27d04a849fd9f9cfd4b35eb80d687817830183df Mon Sep 17 00:00:00 2001
From: Tomas Mraz <tmraz@fedoraproject.org>
Date: Wed, 7 Aug 2019 12:22:55 +0200
Subject: [PATCH] pam_get_authtok_verify: Avoid duplicate password verification
If password was already verified by previous modules in the stack
it does not need to be verified by pam_get_authtok_verify either.
* libpam/pam_get_authtok.c (pam_get_authtok_internal): Set the authtok_verified
appropriately.
(pam_get_authtok_verify): Do not prompt if authtok_verified is set and
set it when the password is verified.
* libpam/pam_private.h: Add authtok_verified to the pam handle struct.
* libpam/pam_start.c (pam_start): Initialize authtok_verified.
---
libpam/pam_get_authtok.c | 10 ++++++++++
libpam/pam_private.h | 1 +
libpam/pam_start.c | 1 +
3 files changed, 12 insertions(+)
diff --git a/libpam/pam_get_authtok.c b/libpam/pam_get_authtok.c
index 800c6e5..99eb25f 100644
--- a/libpam/pam_get_authtok.c
+++ b/libpam/pam_get_authtok.c
@@ -140,6 +140,8 @@ pam_get_authtok_internal (pam_handle_t *pamh, int item,
}
else if (chpass)
{
+ pamh->authtok_verified = 0;
+
retval = pam_prompt (pamh, PAM_PROMPT_ECHO_OFF, &resp[0],
PROMPT1, authtok_type,
strlen (authtok_type) > 0?" ":"");
@@ -184,6 +186,9 @@ pam_get_authtok_internal (pam_handle_t *pamh, int item,
if (retval != PAM_SUCCESS)
return retval;
+ if (chpass > 1)
+ pamh->authtok_verified = 1;
+
return pam_get_item(pamh, item, (const void **)authtok);
}
@@ -214,6 +219,9 @@ pam_get_authtok_verify (pam_handle_t *pamh, const char **authtok,
if (authtok == NULL || pamh->choice != PAM_CHAUTHTOK)
return PAM_SYSTEM_ERR;
+ if (pamh->authtok_verified)
+ return pam_get_item (pamh, PAM_AUTHTOK, (const void **)authtok);
+
if (prompt != NULL)
{
retval = pam_prompt (pamh, PAM_PROMPT_ECHO_OFF, &resp,
@@ -252,5 +260,7 @@ pam_get_authtok_verify (pam_handle_t *pamh, const char **authtok,
if (retval != PAM_SUCCESS)
return retval;
+ pamh->authtok_verified = 1;
+
return pam_get_item(pamh, PAM_AUTHTOK, (const void **)authtok);
}
diff --git a/libpam/pam_private.h b/libpam/pam_private.h
index 7ff9f75..58a26f5 100644
--- a/libpam/pam_private.h
+++ b/libpam/pam_private.h
@@ -172,6 +172,7 @@ struct pam_handle {
#ifdef HAVE_LIBAUDIT
int audit_state; /* keep track of reported audit messages */
#endif
+ int authtok_verified;
};
/* Values for select arg to _pam_dispatch() */
diff --git a/libpam/pam_start.c b/libpam/pam_start.c
index 328416d..e27c64b 100644
--- a/libpam/pam_start.c
+++ b/libpam/pam_start.c
@@ -94,6 +94,7 @@ int pam_start (
#endif
(*pamh)->xdisplay = NULL;
(*pamh)->authtok_type = NULL;
+ (*pamh)->authtok_verified = 0;
memset (&((*pamh)->xauth), 0, sizeof ((*pamh)->xauth));
if (((*pamh)->pam_conversation = (struct pam_conv *)
--
2.20.1

11
SOURCES/pam-1.3.1-console-build.patch
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@ -0,0 +1,11 @@
diff -up Linux-PAM-1.3.1/modules/pam_console/sed-static.console-build Linux-PAM-1.3.1/modules/pam_console/sed-static
--- Linux-PAM-1.3.1/modules/pam_console/sed-static.console-build 2014-01-31 14:17:53.000000000 +0100
+++ Linux-PAM-1.3.1/modules/pam_console/sed-static 2018-09-10 15:06:04.115302315 +0200
@@ -13,6 +13,7 @@ sed '
/^YY_BUFFER_STATE yy_scan_buffer/s/^/STATIC /
/^YY_BUFFER_STATE yy_scan_string/s/^/STATIC /
/^void yy_switch_to_buffer/s/^/STATIC /
+/^extern int yylex/s/^extern /STATIC /
/define YY_DECL int yylex/s/YY_DECL /YY_DECL STATIC /
/^int yyparse/s/^/STATIC /
/^void yyrestart/s/^/STATIC /

185
SOURCES/pam-1.3.1-coverity.patch
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@ -0,0 +1,185 @@
diff --git a/libpam/pam_handlers.c b/libpam/pam_handlers.c
index 106ef7c..b2e94c7 100644
--- a/libpam/pam_handlers.c
+++ b/libpam/pam_handlers.c
@@ -282,7 +282,6 @@ _pam_open_config_file(pam_handle_t *pamh
{
char *p;
FILE *f;
- int err = 0;
/* Absolute path */
if (service[0] == '/') {
diff --git a/libpam_misc/misc_conv.c b/libpam_misc/misc_conv.c
index be53f34..07dce36 100644
--- a/libpam_misc/misc_conv.c
+++ b/libpam_misc/misc_conv.c
@@ -211,7 +211,7 @@ static int read_string(int echo, const char *prompt, char **retstr)
line[nc] = '\0';
}
*retstr = strdup(line);
- _pam_overwrite(line);
+ _pam_overwrite_n(line, sizeof(line));
if (!*retstr) {
D(("no memory for response string"));
nc = -1;
@@ -244,7 +244,7 @@ static int read_string(int echo, const char *prompt, char **retstr)
D(("the timer appears to have expired"));
*retstr = NULL;
- _pam_overwrite(line);
+ _pam_overwrite_n(line, sizeof(line));
cleanexit:
diff --git a/modules/pam_access/pam_access.c b/modules/pam_access/pam_access.c
index 80d885d..3801862 100644
--- a/modules/pam_access/pam_access.c
+++ b/modules/pam_access/pam_access.c
@@ -806,7 +806,7 @@ pam_sm_authenticate (pam_handle_t *pamh, int flags UNUSED,
const char *user=NULL;
const void *void_from=NULL;
const char *from;
- const char const *default_config = PAM_ACCESS_CONFIG;
+ const char * const default_config = PAM_ACCESS_CONFIG;
struct passwd *user_pw;
char hostname[MAXHOSTNAMELEN + 1];
int rv;
diff --git a/modules/pam_limits/pam_limits.c b/modules/pam_limits/pam_limits.c
index 4bc4ae7..f8476b4 100644
--- a/modules/pam_limits/pam_limits.c
+++ b/modules/pam_limits/pam_limits.c
@@ -342,7 +342,7 @@ static const char *lnames[RLIM_NLIMITS] = {
#endif
};
-static int str2rlimit(char *name) {
+static int str2rlimit(const char *name) {
int i;
if (!name || *name == '\0')
return -1;
@@ -352,7 +352,7 @@ static int str2rlimit(char *name) {
return -1;
}
-static rlim_t str2rlim_t(char *value) {
+static rlim_t str2rlim_t(const char *value) {
unsigned long long rlimit = 0;
if (!value) return (rlim_t)rlimit;
@@ -384,7 +384,7 @@ static void parse_kernel_limits(pam_handle_t *pamh, struct pam_limit_s *pl, int
FILE *limitsfile;
const char *proclimits = "/proc/1/limits";
char line[256];
- char *units, *hard, *soft, *name;
+ const char *units, *hard, *soft, *name;
if (!(limitsfile = fopen(proclimits, "r"))) {
pam_syslog(pamh, LOG_WARNING, "Could not read %s (%s), using PAM defaults", proclimits, strerror(errno));
diff --git a/modules/pam_loginuid/pam_loginuid.c b/modules/pam_loginuid/pam_loginuid.c
index 96bfd98..66d202c 100644
--- a/modules/pam_loginuid/pam_loginuid.c
+++ b/modules/pam_loginuid/pam_loginuid.c
@@ -64,7 +64,7 @@ static int set_loginuid(pam_handle_t *pamh, uid_t uid)
fd = open("/proc/self/uid_map", O_RDONLY);
if (fd >= 0) {
count = pam_modutil_read(fd, uid_map, sizeof(uid_map));
- if (strncmp(uid_map, host_uid_map, count) != 0)
+ if (count <= 0 || strncmp(uid_map, host_uid_map, count) != 0)
rc = PAM_IGNORE;
close(fd);
}
diff --git a/modules/pam_mkhomedir/mkhomedir_helper.c b/modules/pam_mkhomedir/mkhomedir_helper.c
index 9e204c1..4b8d6b7 100644
--- a/modules/pam_mkhomedir/mkhomedir_helper.c
+++ b/modules/pam_mkhomedir/mkhomedir_helper.c
@@ -232,6 +232,8 @@ create_homedir(const struct passwd *pwd,
{
pam_syslog(NULL, LOG_DEBUG,
"unable to open or stat src file %s: %m", newsource);
+ if (srcfd >= 0)
+ close(srcfd);
closedir(d);
#ifndef PATH_MAX
diff --git a/modules/pam_namespace/pam_namespace.c b/modules/pam_namespace/pam_namespace.c
index f541f89..85f5efa 100644
--- a/modules/pam_namespace/pam_namespace.c
+++ b/modules/pam_namespace/pam_namespace.c
@@ -1418,6 +1418,7 @@ static int create_instance(struct polydir_s *polyptr, char *ipath, struct stat *
if (fstat(fd, &newstatbuf) < 0) {
pam_syslog(idata->pamh, LOG_ERR, "Error stating %s, %m",
ipath);
+ close(fd);
rmdir(ipath);
return PAM_SESSION_ERR;
}
diff --git a/modules/pam_pwhistory/opasswd.c b/modules/pam_pwhistory/opasswd.c
index e6cf346..813f579 100644
--- a/modules/pam_pwhistory/opasswd.c
+++ b/modules/pam_pwhistory/opasswd.c
@@ -326,6 +326,9 @@ save_old_pass (pam_handle_t *pamh, const char *user, uid_t uid,
n = strlen (buf);
#endif /* HAVE_GETLINE / HAVE_GETDELIM */
+ if (n < 1)
+ break;
+
cp = buf;
save = strdup (buf); /* Copy to write the original data back. */
if (save == NULL)
@@ -336,9 +339,6 @@ save_old_pass (pam_handle_t *pamh, const char *user, uid_t uid,
goto error_opasswd;
}
- if (n < 1)
- break;
-
tmp = strchr (cp, '#'); /* remove comments */
if (tmp)
*tmp = '\0';
diff --git a/modules/pam_rootok/pam_rootok.c b/modules/pam_rootok/pam_rootok.c
index 17baabe..a9d9140 100644
--- a/modules/pam_rootok/pam_rootok.c
+++ b/modules/pam_rootok/pam_rootok.c
@@ -66,14 +66,17 @@ log_callback (int type, const char *fmt, ...)
int audit_fd;
va_list ap;
- va_start(ap, fmt);
#ifdef HAVE_LIBAUDIT
audit_fd = audit_open();
if (audit_fd >= 0) {
char *buf;
+ int ret;
- if (vasprintf (&buf, fmt, ap) < 0)
+ va_start(ap, fmt);
+ ret = vasprintf (&buf, fmt, ap);
+ va_end(ap);
+ if (ret < 0)
return 0;
audit_log_user_avc_message(audit_fd, AUDIT_USER_AVC, buf, NULL, NULL,
NULL, 0);
@@ -83,6 +86,7 @@ log_callback (int type, const char *fmt, ...)
}
#endif
+ va_start(ap, fmt);
vsyslog (LOG_USER | LOG_INFO, fmt, ap);
va_end(ap);
return 0;
diff --git a/modules/pam_sepermit/pam_sepermit.c b/modules/pam_sepermit/pam_sepermit.c
index c653290..f37af0f 100644
--- a/modules/pam_sepermit/pam_sepermit.c
+++ b/modules/pam_sepermit/pam_sepermit.c
@@ -353,7 +353,7 @@ sepermit_match(pam_handle_t *pamh, const char *cfgfile, const char *user,
if (*sense == PAM_SUCCESS) {
if (ignore)
*sense = PAM_IGNORE;
- if (geteuid() == 0 && exclusive && get_loginuid(pamh) == -1)
+ if (geteuid() == 0 && exclusive && get_loginuid(pamh) == (uid_t)-1)
if (sepermit_lock(pamh, user, debug) < 0)
*sense = PAM_AUTH_ERR;
}

1212
SOURCES/pam-1.3.1-faillock-load-conf-from-file.patch
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1186
SOURCES/pam-1.3.1-faillock-update.patch
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70
SOURCES/pam-1.3.1-fds-closing.patch
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@ -0,0 +1,70 @@
diff -up Linux-PAM-1.3.1/libpam/pam_modutil_sanitize.c.fds-closing Linux-PAM-1.3.1/libpam/pam_modutil_sanitize.c
--- Linux-PAM-1.3.1/libpam/pam_modutil_sanitize.c.fds-closing 2017-02-10 11:10:15.000000000 +0100
+++ Linux-PAM-1.3.1/libpam/pam_modutil_sanitize.c 2019-10-16 16:07:31.259021159 +0200
@@ -10,6 +10,7 @@
#include <fcntl.h>
#include <syslog.h>
#include <sys/resource.h>
+#include <dirent.h>
/*
* Creates a pipe, closes its write end, redirects fd to its read end.
@@ -116,27 +117,45 @@ redirect_out(pam_handle_t *pamh, enum pa
static void
close_fds(void)
{
+ DIR *dir = NULL;
+ struct dirent *dent;
+ int dfd = -1;
+ int fd;
+ struct rlimit rlim;
+
/*
* An arbitrary upper limit for the maximum file descriptor number
* returned by RLIMIT_NOFILE.
*/
- const int MAX_FD_NO = 65535;
+ const unsigned int MAX_FD_NO = 65535;
/* The lower limit is the same as for _POSIX_OPEN_MAX. */
- const int MIN_FD_NO = 20;
+ const unsigned int MIN_FD_NO = 20;
- int fd;
- struct rlimit rlim;
-
- if (getrlimit(RLIMIT_NOFILE, &rlim) || rlim.rlim_max > MAX_FD_NO)
- fd = MAX_FD_NO;
- else if (rlim.rlim_max < MIN_FD_NO)
- fd = MIN_FD_NO;
- else
- fd = rlim.rlim_max - 1;
+ /* If /proc is mounted, we can optimize which fd can be closed. */
+ if ((dir = opendir("/proc/self/fd")) != NULL) {
+ if ((dfd = dirfd(dir)) >= 0) {
+ while ((dent = readdir(dir)) != NULL) {
+ fd = atoi(dent->d_name);
+ if (fd > STDERR_FILENO && fd != dfd)
+ close(fd);
+ }
+ }
+ closedir(dir);
+ }
+
+ /* If /proc isn't available, fallback to the previous behavior. */
+ if (dfd < 0) {
+ if (getrlimit(RLIMIT_NOFILE, &rlim) || rlim.rlim_max > MAX_FD_NO)
+ fd = MAX_FD_NO;
+ else if (rlim.rlim_max < MIN_FD_NO)
+ fd = MIN_FD_NO;
+ else
+ fd = rlim.rlim_max - 1;
- for (; fd > STDERR_FILENO; --fd)
- close(fd);
+ for (; fd > STDERR_FILENO; --fd)
+ close(fd);
+ }
}
int

105
SOURCES/pam-1.3.1-inline.patch
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@ -0,0 +1,105 @@
diff -up Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h.inline Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h
--- Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h.inline 2022-05-26 10:44:31.702623614 +0200
+++ Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h 2022-05-26 10:44:31.703623621 +0200
@@ -44,4 +44,17 @@
# define DIAG_POP_IGNORE_CAST_ALIGN /* empty */
#endif
+/*
+ * Evaluates to
+ * 1, if the given two types are known to be the same
+ * 0, otherwise.
+ */
+#if PAM_GNUC_PREREQ(3, 0)
+# define PAM_IS_SAME_TYPE(x_, y_) \
+ __builtin_types_compatible_p(__typeof__(x_), __typeof__(y_))
+#else
+/* Cannot tell whether these types are the same. */
+# define PAM_IS_SAME_TYPE(x_, y_) 0
+#endif
+
#endif /* PAM_CC_COMPAT_H */
diff -up Linux-PAM-1.3.1/libpam/include/pam_inline.h.inline Linux-PAM-1.3.1/libpam/include/pam_inline.h
--- Linux-PAM-1.3.1/libpam/include/pam_inline.h.inline 2022-05-26 10:44:31.703623621 +0200
+++ Linux-PAM-1.3.1/libpam/include/pam_inline.h 2022-05-26 10:44:31.703623621 +0200
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2020 Dmitry V. Levin <ldv@altlinux.org>
+ *
+ * Handy inline functions and macros providing some convenient functionality
+ * to libpam and its modules.
+ */
+
+#ifndef PAM_INLINE_H
+#define PAM_INLINE_H
+
+#include "pam_cc_compat.h"
+#include <string.h>
+
+/*
+ * Evaluates to
+ * - a syntax error if the argument is 0,
+ * 0, otherwise.
+ */
+#define PAM_FAIL_BUILD_ON_ZERO(e_) (sizeof(int[-1 + 2 * !!(e_)]) * 0)
+
+/*
+ * Evaluates to
+ * 1, if the given type is known to be a non-array type
+ * 0, otherwise.
+ */
+#define PAM_IS_NOT_ARRAY(a_) PAM_IS_SAME_TYPE((a_), &(a_)[0])
+
+/*
+ * Evaluates to
+ * - a syntax error if the argument is not an array,
+ * 0, otherwise.
+ */
+#define PAM_MUST_BE_ARRAY(a_) PAM_FAIL_BUILD_ON_ZERO(!PAM_IS_NOT_ARRAY(a_))
+
+/* Evaluates to the number of elements in the specified array. */
+#define PAM_ARRAY_SIZE(a_) (sizeof(a_) / sizeof((a_)[0]) + PAM_MUST_BE_ARRAY(a_))
+
+/*
+ * Returns NULL if STR does not start with PREFIX,
+ * or a pointer to the first char in STR after PREFIX.
+ * The length of PREFIX is specified by PREFIX_LEN.
+ */
+static inline const char *
+pam_str_skip_prefix_len(const char *str, const char *prefix, size_t prefix_len)
+{
+ return strncmp(str, prefix, prefix_len) ? NULL : str + prefix_len;
+}
+
+#define pam_str_skip_prefix(str_, prefix_) \
+ pam_str_skip_prefix_len((str_), (prefix_), sizeof(prefix_) - 1 + PAM_MUST_BE_ARRAY(prefix_))
+
+/*
+ * Returns NULL if STR does not start with PREFIX
+ * (ignoring the case of the characters),
+ * or a pointer to the first char in STR after PREFIX.
+ * The length of PREFIX is specified by PREFIX_LEN.
+ */
+static inline const char *
+pam_str_skip_icase_prefix_len(const char *str, const char *prefix, size_t prefix_len)
+{
+ return strncasecmp(str, prefix, prefix_len) ? NULL : str + prefix_len;
+}
+
+#define pam_str_skip_icase_prefix(str_, prefix_) \
+ pam_str_skip_icase_prefix_len((str_), (prefix_), sizeof(prefix_) - 1 + PAM_MUST_BE_ARRAY(prefix_))
+
+#endif /* PAM_INLINE_H */
diff -up Linux-PAM-1.3.1/libpam/Makefile.am.inline Linux-PAM-1.3.1/libpam/Makefile.am
--- Linux-PAM-1.3.1/libpam/Makefile.am.inline 2022-05-26 10:44:31.702623614 +0200
+++ Linux-PAM-1.3.1/libpam/Makefile.am 2022-05-26 10:45:21.146977780 +0200
@@ -18,7 +18,8 @@ include_HEADERS = include/security/_pam_
include/security/pam_ext.h include/security/pam_modutil.h
noinst_HEADERS = pam_prelude.h pam_private.h pam_tokens.h \
- pam_modutil_private.h include/pam_cc_compat.h
+ pam_modutil_private.h include/pam_cc_compat.h \
+ include/pam_inline.h
libpam_la_LDFLAGS = -no-undefined -version-info 84:2:84
libpam_la_LIBADD = @LIBAUDIT@ $(LIBPRELUDE_LIBS) @LIBDL@

82
SOURCES/pam-1.3.1-lastlog-no-showfailed.patch
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@ -0,0 +1,82 @@
From c426914fa166ffb0482b6f6ad659ddf17d5dfaa1 Mon Sep 17 00:00:00 2001
From: Nir Soffer <nsoffer@redhat.com>
Date: Wed, 9 Jan 2019 23:41:16 +0200
Subject: [PATCH] pam_lastlog: Improve silent option documentation
The silent option explicitly silents only the last login message and not
bad logins. Add a note to the manual to make this clear.
* modules/pam_lastlog/pam_lastlog.8.xml: Clearify "silent showfailed"
---
modules/pam_lastlog/pam_lastlog.8.xml | 1 +
1 file changed, 1 insertion(+)
diff --git a/modules/pam_lastlog/pam_lastlog.8.xml b/modules/pam_lastlog/pam_lastlog.8.xml
index c8f247e..bc2e1be 100644
--- a/modules/pam_lastlog/pam_lastlog.8.xml
+++ b/modules/pam_lastlog/pam_lastlog.8.xml
@@ -102,6 +102,7 @@
<para>
Don't inform the user about any previous login,
just update the <filename>/var/log/lastlog</filename> file.
+ This option does not affect display of bad login attempts.
</para>
</listitem>
</varlistentry>
--
2.20.1
From 7d036249a9772c546ede1f38ad68b3f1575216d6 Mon Sep 17 00:00:00 2001
From: Nir Soffer <nsoffer@redhat.com>
Date: Sun, 6 Jan 2019 00:36:27 +0200
Subject: [PATCH] pam_lastlog: Respect PAM_SILENT flag
pam_lastlog module will not log info about failed login if the session
was opened with PAM_SILENT flag.
Example use case enabled by this change:
sudo --non-interactive program
If this command is run by another program expecting specific output from
the command run by sudo, the unexpected info about failed logins will
break this program.
* modules/pam_lastlog/pam_lastlog.c: Respect silent option.
(_pam_session_parse): Unset LASTLOG_BTMP if PAM_SILENT is set.
---
modules/pam_lastlog/pam_lastlog.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/modules/pam_lastlog/pam_lastlog.c b/modules/pam_lastlog/pam_lastlog.c
index 18bf7be..e980c04 100644
--- a/modules/pam_lastlog/pam_lastlog.c
+++ b/modules/pam_lastlog/pam_lastlog.c
@@ -135,11 +135,6 @@ _pam_session_parse(pam_handle_t *pamh, int flags, int argc, const char **argv)
{
int ctrl=(LASTLOG_DATE|LASTLOG_HOST|LASTLOG_LINE|LASTLOG_WTMP|LASTLOG_UPDATE);
- /* does the appliction require quiet? */
- if (flags & PAM_SILENT) {
- ctrl |= LASTLOG_QUIET;
- }
-
/* step through arguments */
for (; argc-- > 0; ++argv) {
@@ -168,6 +163,12 @@ _pam_session_parse(pam_handle_t *pamh, int flags, int argc, const char **argv)
}
}
+ /* does the appliction require quiet? */
+ if (flags & PAM_SILENT) {
+ ctrl |= LASTLOG_QUIET;
+ ctrl &= ~LASTLOG_BTMP;
+ }
+
D(("ctrl = %o", ctrl));
return ctrl;
}
--
2.20.1

227
SOURCES/pam-1.3.1-lastlog-unlimited-fsize.patch
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@ -0,0 +1,227 @@
From 3a3e70739834cd5cbd17469907ef718c81ae40c0 Mon Sep 17 00:00:00 2001
From: Carlos Santos <casantos@redhat.com>
Date: Wed, 11 Sep 2019 11:50:28 -0300
Subject: [PATCH] pam_lastlog: document the 'unlimited' option
Signed-off-by: Carlos Santos <casantos@redhat.com>
---
modules/pam_lastlog/pam_lastlog.8.xml | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/modules/pam_lastlog/pam_lastlog.8.xml b/modules/pam_lastlog/pam_lastlog.8.xml
index bc2e1be..f10e94a 100644
--- a/modules/pam_lastlog/pam_lastlog.8.xml
+++ b/modules/pam_lastlog/pam_lastlog.8.xml
@@ -48,6 +48,9 @@
<arg choice="opt">
inactive=&lt;days&gt;
</arg>
+ <arg choice="opt">
+ unlimited
+ </arg>
</cmdsynopsis>
</refsynopsisdiv>
@@ -196,6 +199,18 @@
</para>
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option>unlimited</option>
+ </term>
+ <listitem>
+ <para>
+ If the <emphasis>fsize</emphasis> limit is set, this option can be
+ used to override it, preventing failures on systems with large UID
+ values that lead lastlog to become a huge sparse file.
+ </para>
+ </listitem>
+ </varlistentry>
</variablelist>
</refsect1>
@@ -300,6 +315,9 @@
<refsect1 id='pam_lastlog-see_also'>
<title>SEE ALSO</title>
<para>
+ <citerefentry>
+ <refentrytitle>limits.conf</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
<citerefentry>
<refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum>
</citerefentry>,
--
2.20.1
From 9349333a9ae958205294cd25e97fd6b4805bd82b Mon Sep 17 00:00:00 2001
From: Carlos Santos <casantos@redhat.com>
Date: Tue, 10 Sep 2019 23:08:30 -0300
Subject: [PATCH] pam_lastlog: prevent crash due to reduced 'fsize' limit
It a reduced fsize limit is set in /etc/security/limits.conf and
pam_limits is in use pam_lastlog may cause a crash, e.g.
----- begin /etc/pam.d/su ----
auth sufficient pam_rootok.so
auth required pam_wheel.so use_uid
auth required pam_env.so
auth required pam_unix.so nullok
account required pam_unix.so
password required pam_unix.so nullok
session required pam_limits.so
session required pam_env.so
session required pam_unix.so
session optional pam_lastlog.so
----- end /etc/pam.d/su -----
----- begin /etc/security/limits.d/fsize.conf -----
* soft fsize 1710
* hard fsize 1710
----- end /etc/security/limits.d/fsize.conf -----
# id user1
uid=1000(user1) gid=1000(user1) groups=1000(user1)
# su - user1
Last login: Wed Sep 11 01:52:44 UTC 2019 on console
$ exit
# id user2
uid=60000(user2) gid=60000(user2) groups=60000(user2)
# su - user2
File size limit exceeded
This happens because pam_limits sets RLIMIT_FSIZE before pam_lastlog
attempts to write /var/log/lastlog, leading to a SIGXFSZ signal.
In order to fix this, and an 'unlimited' option, which leads to saving
the 'fsize' limit and set it to unlimited before writing lastlog. After
that, restore the saved value. If 'fsize' is already unlimited nothing
is done.
Failing to set the 'fsize' limit is not a fatal error. With luck the
configured limit will suffice, so we try to write lastlog anyway, even
under the risk of dying due to a SIGXFSZ.
Failing to restore the 'fsize' limit is a fatal error, since we don't
want to keep it unlimited.
Signed-off-by: Carlos Santos <casantos@redhat.com>
---
modules/pam_lastlog/pam_lastlog.c | 66 ++++++++++++++++++++++++++-----
1 file changed, 57 insertions(+), 9 deletions(-)
diff --git a/modules/pam_lastlog/pam_lastlog.c b/modules/pam_lastlog/pam_lastlog.c
index e980c04..a135c9f 100644
--- a/modules/pam_lastlog/pam_lastlog.c
+++ b/modules/pam_lastlog/pam_lastlog.c
@@ -25,6 +25,8 @@
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/resource.h>
#include <syslog.h>
#include <unistd.h>
@@ -82,15 +84,16 @@ struct lastlog {
/* argument parsing */
-#define LASTLOG_DATE 01 /* display the date of the last login */
-#define LASTLOG_HOST 02 /* display the last host used (if set) */
-#define LASTLOG_LINE 04 /* display the last terminal used */
-#define LASTLOG_NEVER 010 /* display a welcome message for first login */
-#define LASTLOG_DEBUG 020 /* send info to syslog(3) */
-#define LASTLOG_QUIET 040 /* keep quiet about things */
-#define LASTLOG_WTMP 0100 /* log to wtmp as well as lastlog */
-#define LASTLOG_BTMP 0200 /* display failed login info from btmp */
-#define LASTLOG_UPDATE 0400 /* update the lastlog and wtmp files (default) */
+#define LASTLOG_DATE 01 /* display the date of the last login */
+#define LASTLOG_HOST 02 /* display the last host used (if set) */
+#define LASTLOG_LINE 04 /* display the last terminal used */
+#define LASTLOG_NEVER 010 /* display a welcome message for first login */
+#define LASTLOG_DEBUG 020 /* send info to syslog(3) */
+#define LASTLOG_QUIET 040 /* keep quiet about things */
+#define LASTLOG_WTMP 0100 /* log to wtmp as well as lastlog */
+#define LASTLOG_BTMP 0200 /* display failed login info from btmp */
+#define LASTLOG_UPDATE 0400 /* update the lastlog and wtmp files (default) */
+#define LASTLOG_UNLIMITED 01000 /* unlimited file size (ignore 'fsize' limit) */
static int
_pam_auth_parse(pam_handle_t *pamh, int flags, int argc, const char **argv,
@@ -158,6 +161,8 @@ _pam_session_parse(pam_handle_t *pamh, int flags, int argc, const char **argv)
ctrl &= ~(LASTLOG_WTMP|LASTLOG_UPDATE);
} else if (!strcmp(*argv,"showfailed")) {
ctrl |= LASTLOG_BTMP;
+ } else if (!strcmp(*argv,"unlimited")) {
+ ctrl |= LASTLOG_UNLIMITED;
} else {
pam_syslog(pamh, LOG_ERR, "unknown option: %s", *argv);
}
@@ -373,6 +378,12 @@ static int
last_login_write(pam_handle_t *pamh, int announce, int last_fd,
uid_t uid, const char *user)
{
+ static struct rlimit no_limit = {
+ RLIM_INFINITY,
+ RLIM_INFINITY
+ };
+ struct rlimit old_limit;
+ int setrlimit_res;
struct flock last_lock;
struct lastlog last_login;
time_t ll_time;
@@ -427,6 +438,31 @@ last_login_write(pam_handle_t *pamh, int announce, int last_fd,
sleep(LASTLOG_IGNORE_LOCK_TIME);
}
+ /*
+ * Failing to set the 'fsize' limit is not a fatal error. We try to write
+ * lastlog anyway, under the risk of dying due to a SIGXFSZ.
+ */
+ D(("setting limit for 'fsize'"));
+
+ if ((announce & LASTLOG_UNLIMITED) == 0) { /* don't set to unlimted */
+ setrlimit_res = -1;
+ } else if (getrlimit(RLIMIT_FSIZE, &old_limit) == 0) {
+ if (old_limit.rlim_cur == RLIM_INFINITY) { /* already unlimited */
+ setrlimit_res = -1;
+ } else {
+ setrlimit_res = setrlimit(RLIMIT_FSIZE, &no_limit);
+ if (setrlimit_res != 0)
+ pam_syslog(pamh, LOG_WARNING, "Could not set limit for 'fsize': %m");
+ }
+ } else {
+ setrlimit_res = -1;
+ if (errno == EINVAL) {
+ pam_syslog(pamh, LOG_INFO, "Limit for 'fsize' not supported: %m");
+ } else {
+ pam_syslog(pamh, LOG_WARNING, "Could not get limit for 'fsize': %m");
+ }
+ }
+
D(("writing to the lastlog file"));
if (pam_modutil_write (last_fd, (char *) &last_login,
sizeof (last_login)) != sizeof(last_login)) {
@@ -434,6 +470,18 @@ last_login_write(pam_handle_t *pamh, int announce, int last_fd,
retval = PAM_SERVICE_ERR;
}
+ /*
+ * Failing to restore the 'fsize' limit is a fatal error.
+ */
+ D(("restoring limit for 'fsize'"));
+ if (setrlimit_res == 0) {
+ setrlimit_res = setrlimit(RLIMIT_FSIZE, &old_limit);
+ if (setrlimit_res != 0) {
+ pam_syslog(pamh, LOG_ERR, "Could not restore limit for 'fsize': %m");
+ retval = PAM_SERVICE_ERR;
+ }
+ }
+
last_lock.l_type = F_UNLCK;
(void) fcntl(last_fd, F_SETLK, &last_lock); /* unlock */
D(("unlocked"));
--
2.20.1

25
SOURCES/pam-1.3.1-motd-manpage.patch
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@ -0,0 +1,25 @@
diff -up Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml.motd-manpage Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml
--- Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml.motd-manpage 2018-05-18 11:50:46.000000000 +0200
+++ Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml 2019-12-19 10:29:36.243558251 +0100
@@ -31,10 +31,19 @@
<para>
pam_motd is a PAM module that can be used to display
arbitrary motd (message of the day) files after a successful
- login. By default the <filename>/etc/motd</filename> file is
+ login. By default the <filename>/etc/motd</filename> file and
+ all files from <filename>/etc/motd.d</filename> are
shown. The message size is limited to 64KB.
</para>
-
+ <para>
+ To silence a message,
+ a symbolic link with target <filename>/dev/null</filename>
+ may be placed in <filename>/etc/motd.d</filename> with
+ the same filename as the message to be silenced. Example:
+ </para>
+ <para>
+ <command>ln -sfn /dev/null /etc/motd.d/my_motd</command>
+ </para>
</refsect1>
<refsect1 id="pam_motd-options">

68
SOURCES/pam-1.3.1-namespace-gdm-doc.patch
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@ -0,0 +1,68 @@
From 491e5500b6b3913f531574208274358a2df88659 Mon Sep 17 00:00:00 2001
From: ikerexxe <ipedrosa@redhat.com>
Date: Mon, 5 Oct 2020 10:41:29 +0200
Subject: [PATCH] pam_namespace: polyinstantiation refer to gdm doc
modules/pam_namespace/pam_namespace.8.xml: delete obsolete information
about polyinstantiation and refer to gdm's documentation.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1861841
---
modules/pam_namespace/pam_namespace.8.xml | 41 ++---------------------
1 file changed, 2 insertions(+), 39 deletions(-)
diff --git a/modules/pam_namespace/pam_namespace.8.xml b/modules/pam_namespace/pam_namespace.8.xml
index f0f80d33..57c44c4b 100644
--- a/modules/pam_namespace/pam_namespace.8.xml
+++ b/modules/pam_namespace/pam_namespace.8.xml
@@ -343,45 +343,8 @@
</para>
<para>
- To use polyinstantiation with graphical display manager gdm, insert the
- following line, before exit 0, in /etc/gdm/PostSession/Default:
- </para>
-
- <para>
- /usr/sbin/gdm-safe-restart
- </para>
-
- <para>
- This allows gdm to restart after each session and appropriately adjust
- namespaces of display manager and the X server. If polyinstantiation
- of /tmp is desired along with the graphical environment, then additional
- configuration changes are needed to address the interaction of X server
- and font server namespaces with their use of /tmp to create
- communication sockets. Please use the initialization script
- <filename>/etc/security/namespace.init</filename> to ensure that
- the X server and its clients can appropriately access the
- communication socket X0. Please refer to the sample instructions
- provided in the comment section of the instance initialization script
- <filename>/etc/security/namespace.init</filename>. In addition,
- perform the following changes to use graphical environment with
- polyinstantiation of /tmp:
- </para>
-
- <para>
- <literallayout>
- 1. Disable the use of font server by commenting out "FontPath"
- line in /etc/X11/xorg.conf. If you do want to use the font server
- then you will have to augment the instance initialization
- script to appropriately provide /tmp/.font-unix from the
- polyinstantiated /tmp.
- 2. Ensure that the gdm service is setup to use pam_namespace,
- as described above, by modifying /etc/pam.d/gdm.
- 3. Ensure that the display manager is configured to restart X server
- with each new session. This default setup can be verified by
- making sure that /usr/share/gdm/defaults.conf contains
- "AlwaysRestartServer=true", and it is not overridden by
- /etc/gdm/custom.conf.
- </literallayout>
+ To use polyinstantiation with graphical display manager gdm, please refer
+ to gdm's documentation.
</para>
</refsect1>
--
2.26.2

131
SOURCES/pam-1.3.1-namespace-mntopts.patch
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@ -0,0 +1,131 @@
diff --git a/modules/pam_namespace/namespace.conf.5.xml b/modules/pam_namespace/namespace.conf.5.xml
index c7698cb..a94b49e 100644
--- a/modules/pam_namespace/namespace.conf.5.xml
+++ b/modules/pam_namespace/namespace.conf.5.xml
@@ -122,9 +122,14 @@
<para><emphasis>mntopts</emphasis>=<replaceable>value</replaceable>
- value of this flag is passed to the mount call when the tmpfs mount is
done. It allows for example the specification of the maximum size of the
- tmpfs instance that is created by the mount call. See <citerefentry>
- <refentrytitle>mount</refentrytitle><manvolnum>8</manvolnum>
- </citerefentry> for details.
+ tmpfs instance that is created by the mount call. In addition to
+ options specified in the <citerefentry>
+ <refentrytitle>tmpfs</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry> manual the <emphasis>nosuid</emphasis>,
+ <emphasis>noexec</emphasis>, and <emphasis>nodev</emphasis> flags
+ can be used to respectively disable setuid bit effect, disable running
+ executables, and disable devices to be interpreted on the mounted
+ tmpfs filesystem.
</para>
<para>
diff --git a/modules/pam_namespace/pam_namespace.c b/modules/pam_namespace/pam_namespace.c
index f541f89..660c7a1 100644
--- a/modules/pam_namespace/pam_namespace.c
+++ b/modules/pam_namespace/pam_namespace.c
@@ -230,6 +230,73 @@ static int parse_iscript_params(char *params, struct polydir_s *poly)
return 0;
}
+struct mntflag {
+ const char *name;
+ size_t len;
+ unsigned long flag;
+};
+
+#define LITERAL_AND_LEN(x) x, sizeof(x) - 1
+
+static const struct mntflag mntflags[] = {
+ { LITERAL_AND_LEN("noexec"), MS_NOEXEC },
+ { LITERAL_AND_LEN("nosuid"), MS_NOSUID },
+ { LITERAL_AND_LEN("nodev"), MS_NODEV }
+ };
+
+static int filter_mntopts(const char *opts, char **filtered,
+ unsigned long *mountflags)
+{
+ size_t origlen = strlen(opts);
+ const char *end;
+ char *dest;
+
+ dest = *filtered = NULL;
+ *mountflags = 0;
+
+ if (origlen == 0)
+ return 0;
+
+ do {
+ size_t len;
+ int i;
+
+ end = strchr(opts, ',');
+ if (end == NULL) {
+ len = strlen(opts);
+ } else {
+ len = end - opts;
+ }
+
+ for (i = 0; i < (int)(sizeof(mntflags)/sizeof(mntflags[0])); i++) {
+ if (mntflags[i].len != len)
+ continue;
+ if (memcmp(mntflags[i].name, opts, len) == 0) {
+ *mountflags |= mntflags[i].flag;
+ opts = end;
+ break;
+ }
+ }
+
+ if (opts != end) {
+ if (dest != NULL) {
+ *dest = ',';
+ ++dest;
+ } else {
+ dest = *filtered = calloc(1, origlen + 1);
+ if (dest == NULL)
+ return -1;
+ }
+ memcpy(dest, opts, len);
+ dest += len;
+ }
+
+ opts = end + 1;
+ } while (end != NULL);
+
+ return 0;
+}
+
static int parse_method(char *method, struct polydir_s *poly,
struct instance_data *idata)
{
@@ -289,7 +356,8 @@ static int parse_method(char *method, struct polydir_s *poly,
break;
}
free(poly->mount_opts); /* if duplicate mntopts specified */
- if ((poly->mount_opts = strdup(flag+namelen+1)) == NULL) {
+ poly->mount_opts = NULL;
+ if (filter_mntopts(flag+namelen+1, &poly->mount_opts, &poly->mount_flags) != 0) {
pam_syslog(idata->pamh, LOG_CRIT, "Memory allocation error");
return -1;
}
@@ -1484,7 +1552,7 @@ static int ns_setup(struct polydir_s *polyptr,
}
if (polyptr->method == TMPFS) {
- if (mount("tmpfs", polyptr->dir, "tmpfs", 0, polyptr->mount_opts) < 0) {
+ if (mount("tmpfs", polyptr->dir, "tmpfs", polyptr->mount_flags, polyptr->mount_opts) < 0) {
pam_syslog(idata->pamh, LOG_ERR, "Error mounting tmpfs on %s, %m",
polyptr->dir);
return PAM_SESSION_ERR;
diff --git a/modules/pam_namespace/pam_namespace.h b/modules/pam_namespace/pam_namespace.h
index 47ebcc3..1522386 100644
--- a/modules/pam_namespace/pam_namespace.h
+++ b/modules/pam_namespace/pam_namespace.h
@@ -166,6 +166,7 @@ struct polydir_s {
unsigned int flags; /* polydir flags */
char *init_script; /* path to init script */
char *mount_opts; /* mount options for tmpfs mount */
+ unsigned long mount_flags; /* mount flags for tmpfs mount */
uid_t owner; /* user which should own the polydir */
gid_t group; /* group which should own the polydir */
mode_t mode; /* mode of the polydir */

24
SOURCES/pam-1.3.1-noflex.patch
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@ -0,0 +1,24 @@
diff -up Linux-PAM-1.3.1/doc/Makefile.am.noflex Linux-PAM-1.3.1/doc/Makefile.am
--- Linux-PAM-1.3.1/doc/Makefile.am.noflex 2017-02-10 11:10:15.000000000 +0100
+++ Linux-PAM-1.3.1/doc/Makefile.am 2018-05-18 14:53:50.300997606 +0200
@@ -2,7 +2,7 @@
# Copyright (c) 2005, 2006 Thorsten Kukuk <kukuk@suse.de>
#
-SUBDIRS = man specs sag adg mwg
+SUBDIRS = man sag adg mwg
CLEANFILES = *~
diff -up Linux-PAM-1.3.1/Makefile.am.noflex Linux-PAM-1.3.1/Makefile.am
--- Linux-PAM-1.3.1/Makefile.am.noflex 2018-05-18 14:53:50.301997629 +0200
+++ Linux-PAM-1.3.1/Makefile.am 2018-05-18 14:55:31.576353800 +0200
@@ -4,7 +4,7 @@
AUTOMAKE_OPTIONS = 1.9 gnu dist-bzip2 dist-xz check-news
-SUBDIRS = libpam tests libpamc libpam_misc modules po conf doc examples xtests
+SUBDIRS = libpam tests libpamc libpam_misc modules po doc examples xtests
CLEANFILES = *~

63
SOURCES/pam-1.3.1-pam-cc-compat.patch
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@ -0,0 +1,63 @@
diff -up Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h.pam-cc-compat Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h
--- Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h.pam-cc-compat 2022-05-26 10:43:50.436328027 +0200
+++ Linux-PAM-1.3.1/libpam/include/pam_cc_compat.h 2022-05-26 10:43:50.436328027 +0200
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2020 Dmitry V. Levin <ldv@altlinux.org>
+ */
+
+#ifndef PAM_CC_COMPAT_H
+#define PAM_CC_COMPAT_H
+
+#include "config.h"
+#include <security/_pam_types.h>
+
+#if defined __clang__ && defined __clang_major__ && defined __clang_minor__
+# define PAM_CLANG_PREREQ(maj, min) \
+ ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min))
+#else
+# define PAM_CLANG_PREREQ(maj, min) 0
+#endif
+
+#if PAM_GNUC_PREREQ(4, 6)
+# define DIAG_PUSH_IGNORE_CAST_QUAL \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wcast-qual\"")
+# define DIAG_POP_IGNORE_CAST_QUAL \
+ _Pragma("GCC diagnostic pop")
+# define DIAG_PUSH_IGNORE_CAST_ALIGN \
+ _Pragma("GCC diagnostic push"); \
+ _Pragma("GCC diagnostic ignored \"-Wcast-align\"")
+# define DIAG_POP_IGNORE_CAST_ALIGN \
+ _Pragma("GCC diagnostic pop")
+#elif PAM_CLANG_PREREQ(2, 6)
+# define DIAG_PUSH_IGNORE_CAST_QUAL \
+ _Pragma("clang diagnostic push"); \
+ _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+# define DIAG_POP_IGNORE_CAST_QUAL \
+ _Pragma("clang diagnostic pop")
+# define DIAG_PUSH_IGNORE_CAST_ALIGN \
+ _Pragma("clang diagnostic push"); \
+ _Pragma("clang diagnostic ignored \"-Wcast-align\"")
+# define DIAG_POP_IGNORE_CAST_ALIGN \
+ _Pragma("clang diagnostic pop")
+#else
+# define DIAG_PUSH_IGNORE_CAST_QUAL /* empty */
+# define DIAG_POP_IGNORE_CAST_QUAL /* empty */
+# define DIAG_PUSH_IGNORE_CAST_ALIGN /* empty */
+# define DIAG_POP_IGNORE_CAST_ALIGN /* empty */
+#endif
+
+#endif /* PAM_CC_COMPAT_H */
diff -up Linux-PAM-1.3.1/libpam/Makefile.am.pam-cc-compat Linux-PAM-1.3.1/libpam/Makefile.am
--- Linux-PAM-1.3.1/libpam/Makefile.am.pam-cc-compat 2022-05-26 10:43:50.436328027 +0200
+++ Linux-PAM-1.3.1/libpam/Makefile.am 2022-05-26 10:44:00.865402730 +0200
@@ -18,7 +18,7 @@ include_HEADERS = include/security/_pam_
include/security/pam_ext.h include/security/pam_modutil.h
noinst_HEADERS = pam_prelude.h pam_private.h pam_tokens.h \
- pam_modutil_private.h
+ pam_modutil_private.h include/pam_cc_compat.h
libpam_la_LDFLAGS = -no-undefined -version-info 84:2:84
libpam_la_LIBADD = @LIBAUDIT@ $(LIBPRELUDE_LIBS) @LIBDL@

125
SOURCES/pam-1.3.1-pam-keyinit-thread-safe.patch
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@ -0,0 +1,125 @@
diff -up Linux-PAM-1.3.1/modules/pam_keyinit/pam_keyinit.c.pam_keyinit-thread-safe Linux-PAM-1.3.1/modules/pam_keyinit/pam_keyinit.c
--- Linux-PAM-1.3.1/modules/pam_keyinit/pam_keyinit.c.pam_keyinit-thread-safe 2017-02-10 11:10:15.000000000 +0100
+++ Linux-PAM-1.3.1/modules/pam_keyinit/pam_keyinit.c 2022-04-25 12:10:28.071240439 +0200
@@ -20,6 +20,7 @@
#include <security/pam_modutil.h>
#include <security/pam_ext.h>
#include <sys/syscall.h>
+#include <stdatomic.h>
#define KEY_SPEC_SESSION_KEYRING -3 /* ID for session keyring */
#define KEY_SPEC_USER_KEYRING -4 /* ID for UID-specific keyring */
@@ -30,12 +31,12 @@
#define KEYCTL_REVOKE 3 /* revoke a key */
#define KEYCTL_LINK 8 /* link a key into a keyring */
-static int my_session_keyring;
-static int session_counter;
-static int do_revoke;
-static int revoke_as_uid;
-static int revoke_as_gid;
-static int xdebug = 0;
+static _Thread_local int my_session_keyring = 0;
+static _Atomic int session_counter = 0;
+static _Thread_local int do_revoke = 0;
+static _Thread_local uid_t revoke_as_uid;
+static _Thread_local gid_t revoke_as_gid;
+static _Thread_local int xdebug = 0;
static void debug(pam_handle_t *pamh, const char *fmt, ...)
__attribute__((format(printf, 2, 3)));
@@ -65,6 +66,33 @@ static int error(pam_handle_t *pamh, con
return PAM_SESSION_ERR;
}
+static int pam_setreuid(uid_t ruid, uid_t euid)
+{
+#if defined(SYS_setreuid32)
+ return syscall(SYS_setreuid32, ruid, euid);
+#else
+ return syscall(SYS_setreuid, ruid, euid);
+#endif
+}
+
+static int pam_setregid(gid_t rgid, gid_t egid)
+{
+#if defined(SYS_setregid32)
+ return syscall(SYS_setregid32, rgid, egid);
+#else
+ return syscall(SYS_setregid, rgid, egid);
+#endif
+}
+
+static int pam_setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+#if defined(SYS_setresuid32)
+ return syscall(SYS_setresuid32, ruid, euid, suid);
+#else
+ return syscall(SYS_setresuid, ruid, euid, suid);
+#endif
+}
+
/*
* initialise the session keyring for this process
*/
@@ -139,23 +167,25 @@ static void kill_keyrings(pam_handle_t *
/* switch to the real UID and GID so that we have permission to
* revoke the key */
- if (revoke_as_gid != old_gid && setregid(-1, revoke_as_gid) < 0)
+ if (revoke_as_gid != old_gid && pam_setregid(-1, revoke_as_gid) < 0)
error(pamh, "Unable to change GID to %d temporarily\n",
revoke_as_gid);
- if (revoke_as_uid != old_uid && setresuid(-1, revoke_as_uid, old_uid) < 0)
+ if (revoke_as_uid != old_uid && pam_setresuid(-1, revoke_as_uid, old_uid) < 0)
error(pamh, "Unable to change UID to %d temporarily\n",
revoke_as_uid);
+ if (getegid() != old_gid && pam_setregid(-1, old_gid) < 0)
+ error(pamh, "Unable to change GID back to %d\n", old_gid);
syscall(__NR_keyctl,
KEYCTL_REVOKE,
my_session_keyring);
/* return to the orignal UID and GID (probably root) */
- if (revoke_as_uid != old_uid && setreuid(-1, old_uid) < 0)
+ if (revoke_as_uid != old_uid && pam_setreuid(-1, old_uid) < 0)
error(pamh, "Unable to change UID back to %d\n", old_uid);
- if (revoke_as_gid != old_gid && setregid(-1, old_gid) < 0)
+ if (revoke_as_gid != old_gid && pam_setregid(-1, old_gid) < 0)
error(pamh, "Unable to change GID back to %d\n", old_gid);
my_session_keyring = 0;
@@ -210,14 +240,14 @@ int pam_sm_open_session(pam_handle_t *pa
/* switch to the real UID and GID so that the keyring ends up owned by
* the right user */
- if (gid != old_gid && setregid(gid, -1) < 0) {
+ if (gid != old_gid && pam_setregid(gid, -1) < 0) {
error(pamh, "Unable to change GID to %d temporarily\n", gid);
return PAM_SESSION_ERR;
}
- if (uid != old_uid && setreuid(uid, -1) < 0) {
+ if (uid != old_uid && pam_setreuid(uid, -1) < 0) {
error(pamh, "Unable to change UID to %d temporarily\n", uid);
- if (setregid(old_gid, -1) < 0)
+ if (pam_setregid(old_gid, -1) < 0)
error(pamh, "Unable to change GID back to %d\n", old_gid);
return PAM_SESSION_ERR;
}
@@ -225,10 +255,10 @@ int pam_sm_open_session(pam_handle_t *pa
ret = init_keyrings(pamh, force);
/* return to the orignal UID and GID (probably root) */
- if (uid != old_uid && setreuid(old_uid, -1) < 0)
+ if (uid != old_uid && pam_setreuid(old_uid, -1) < 0)
ret = error(pamh, "Unable to change UID back to %d\n", old_uid);
- if (gid != old_gid && setregid(old_gid, -1) < 0)
+ if (gid != old_gid && pam_setregid(old_gid, -1) < 0)
ret = error(pamh, "Unable to change GID back to %d\n", old_gid);
return ret;

78
SOURCES/pam-1.3.1-pam-limits-unlimited-value.patch
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@ -0,0 +1,78 @@
diff -up Linux-PAM-1.3.1/modules/pam_limits/limits.conf.5.xml.pam-limits-unlimited-value Linux-PAM-1.3.1/modules/pam_limits/limits.conf.5.xml
--- Linux-PAM-1.3.1/modules/pam_limits/limits.conf.5.xml.pam-limits-unlimited-value 2022-01-28 09:45:41.431606850 +0100
+++ Linux-PAM-1.3.1/modules/pam_limits/limits.conf.5.xml 2022-01-28 09:47:31.732430391 +0100
@@ -275,6 +275,8 @@
All items support the values <emphasis>-1</emphasis>,
<emphasis>unlimited</emphasis> or <emphasis>infinity</emphasis> indicating no limit,
except for <emphasis remap='B'>priority</emphasis> and <emphasis remap='B'>nice</emphasis>.
+ If <emphasis remap='B'>nofile</emphasis> is to be set to one of these values,
+ it will be set to the contents of /proc/sys/fs/nr_open instead (see setrlimit(3)).
</para>
<para>
If a hard limit or soft limit of a resource is set to a valid value,
diff -up Linux-PAM-1.3.1/modules/pam_limits/pam_limits.c.pam-limits-unlimited-value Linux-PAM-1.3.1/modules/pam_limits/pam_limits.c
--- Linux-PAM-1.3.1/modules/pam_limits/pam_limits.c.pam-limits-unlimited-value 2022-01-28 09:45:41.415606731 +0100
+++ Linux-PAM-1.3.1/modules/pam_limits/pam_limits.c 2022-01-28 09:45:41.431606850 +0100
@@ -487,6 +487,41 @@ static int init_limits(pam_handle_t *pam
return retval;
}
+/*
+ * Read the contents of <pathname> and return it in *valuep
+ * return 1 if conversion succeeds, result is in *valuep
+ * return 0 if conversion fails, *valuep is untouched.
+ */
+static int
+value_from_file(const char *pathname, rlim_t *valuep)
+{
+ char buf[128];
+ FILE *fp;
+ int retval;
+
+ retval = 0;
+
+ if ((fp = fopen(pathname, "r")) != NULL) {
+ if (fgets(buf, sizeof(buf), fp) != NULL) {
+ char *endptr;
+ unsigned long long value;
+
+ errno = 0;
+ value = strtoull(buf, &endptr, 10);
+ if (endptr != buf &&
+ (value != ULLONG_MAX || errno == 0) &&
+ (unsigned long long) (rlim_t) value == value) {
+ *valuep = (rlim_t) value;
+ retval = 1;
+ }
+ }
+
+ fclose(fp);
+ }
+
+ return retval;
+}
+
static void
process_limit (const pam_handle_t *pamh, int source, const char *lim_type,
const char *lim_item, const char *lim_value,
@@ -652,6 +687,20 @@ process_limit (const pam_handle_t *pamh,
rlimit_value = 20 - int_value;
break;
#endif
+ case RLIMIT_NOFILE:
+ /*
+ * If nofile is to be set to "unlimited", try to set it to
+ * the value in /proc/sys/fs/nr_open instead.
+ */
+ if (rlimit_value == RLIM_INFINITY) {
+ if (!value_from_file("/proc/sys/fs/nr_open", &rlimit_value))
+ pam_syslog(pamh, LOG_WARNING,
+ "Cannot set \"nofile\" to a sensible value");
+ else if (ctrl & PAM_DEBUG_ARG)
+ pam_syslog(pamh, LOG_DEBUG, "Setting \"nofile\" limit to %llu",
+ (unsigned long long) rlimit_value);
+ }
+ break;
}
if ( (limit_item != LIMIT_LOGIN)

74
SOURCES/pam-1.3.1-pam-modutil-close-write.patch
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@ -0,0 +1,74 @@
From b6f73810a2e7afd02a231e2dfa14b05752c83db7 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Wed, 26 Feb 2020 19:20:58 +0000
Subject: [PATCH] pam_modutil_sanitize_helper_fds: fix SIGPIPE effect of
PAM_MODUTIL_PIPE_FD
When pam_modutil_sanitize_helper_fds() is invoked with
PAM_MODUTIL_PIPE_FD to provide a dummy pipe descriptor for stdout
or stderr, it closes the read end of the newly created dummy pipe.
The negative side effect of this approach is that any write to such
descriptor triggers a SIGPIPE. Avoid this by closing the write end of
the dummy pipe and using its read end as a dummy pipe descriptor for
output. Any read from such descriptor returns 0, and any write just
fails with EBADF, which should work better with unprepared writers.
* libpam/pam_modutil_sanitize.c (redirect_out_pipe): Remove.
(redirect_out): Call redirect_in_pipe instead of redirect_out_pipe.
Fixes: b0ec5d1e ("Introduce pam_modutil_sanitize_helper_fds")
---
libpam/pam_modutil_sanitize.c | 30 +-----------------------------
1 file changed, 1 insertion(+), 29 deletions(-)
diff --git a/libpam/pam_modutil_sanitize.c b/libpam/pam_modutil_sanitize.c
index 605c859d..58b9537c 100644
--- a/libpam/pam_modutil_sanitize.c
+++ b/libpam/pam_modutil_sanitize.c
@@ -46,34 +46,6 @@ redirect_in_pipe(pam_handle_t *pamh, int fd, const char *name)
return fd;
}
-/*
- * Creates a pipe, closes its read end, redirects fd to its write end.
- * Returns fd on success, -1 otherwise.
- */
-static int
-redirect_out_pipe(pam_handle_t *pamh, int fd, const char *name)
-{
- int out[2];
-
- if (pipe(out) < 0) {
- pam_syslog(pamh, LOG_ERR, "Could not create pipe: %m");
- return -1;
- }
-
- close(out[0]);
-
- if (out[1] == fd)
- return fd;
-
- if (dup2(out[1], fd) != fd) {
- pam_syslog(pamh, LOG_ERR, "dup2 of %s failed: %m", name);
- fd = -1;
- }
-
- close(out[1]);
- return fd;
-}
-
/*
* Opens /dev/null for writing, redirects fd there.
* Returns fd on success, -1 otherwise.
@@ -106,7 +78,7 @@ redirect_out(pam_handle_t *pamh, enum pam_modutil_redirect_fd mode,
{
switch (mode) {
case PAM_MODUTIL_PIPE_FD:
- if (redirect_out_pipe(pamh, fd, name) < 0)
+ if (redirect_in_pipe(pamh, fd, name) < 0)
return -1;
break;
case PAM_MODUTIL_NULL_FD:
--
2.25.3

283
SOURCES/pam-1.3.1-pam-motd-avoid-unnecessary-logging.patch
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@ -0,0 +1,283 @@
From d57ab22133654033ee1da89f128a81572d320985 Mon Sep 17 00:00:00 2001
From: Tomas Mraz <tmraz@fedoraproject.org>
Date: Thu, 20 Dec 2018 13:59:25 +0100
Subject: [PATCH] pam_motd: Cleanup the code and avoid unnecessary logging
The pam_motd module will not log if the default motd.d directories
are missing.
Also cleanup some code cleanliness issues and fix compilation
warnings.
* modules/pam_motd/pam_motd.c: Constification of constant strings.
(try_to_display_directory): Removed unused function.
(pam_split_string): Replace uint with unsigned int. Fix warnings.
(compare_strings): Fix warnings by proper constification.
(try_to_display_directories_with_overrides): Cleanups. Switch
off the logging if the motd.d directories are missing and they
are default ones.
(pam_sm_open_session): Cleanup warnings. Pass the information
to try_to_display_directories_with_overrides() that non-default
motd options are used.
---
modules/pam_motd/pam_motd.c | 88 ++++++++++++++++---------------------
1 file changed, 37 insertions(+), 51 deletions(-)
diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c
index ec3ebd58..dbd718b6 100644
--- a/modules/pam_motd/pam_motd.c
+++ b/modules/pam_motd/pam_motd.c
@@ -22,6 +22,7 @@
#include <sys/stat.h>
#include <pwd.h>
#include <syslog.h>
+#include <errno.h>
#include <security/_pam_macros.h>
#include <security/pam_ext.h>
@@ -48,8 +49,8 @@ pam_sm_close_session (pam_handle_t *pamh UNUSED, int flags UNUSED,
return PAM_IGNORE;
}
-static char default_motd[] = DEFAULT_MOTD;
-static char default_motd_dir[] = DEFAULT_MOTD_D;
+static const char default_motd[] = DEFAULT_MOTD;
+static const char default_motd_dir[] = DEFAULT_MOTD_D;
static void try_to_display_fd(pam_handle_t *pamh, int fd)
{
@@ -75,28 +76,6 @@ static void try_to_display_fd(pam_handle_t *pamh, int fd)
_pam_drop(mtmp);
}
-static void try_to_display_directory(pam_handle_t *pamh, const char *dirname)
-{
- DIR *dirp;
-
- dirp = opendir(dirname);
-
- if (dirp != NULL) {
- struct dirent *entry;
-
- while ((entry = readdir(dirp))) {
- int fd = openat(dirfd(dirp), entry->d_name, O_RDONLY);
-
- if (fd >= 0) {
- try_to_display_fd(pamh, fd);
- close(fd);
- }
- }
-
- closedir(dirp);
- }
-}
-
/*
* Split a DELIM-separated string ARG into an array.
* Outputs a newly allocated array of strings OUT_ARG_SPLIT
@@ -104,14 +83,14 @@ static void try_to_display_directory(pam_handle_t *pamh, const char *dirname)
* Returns 0 in case of error, 1 in case of success.
*/
static int pam_split_string(const pam_handle_t *pamh, char *arg, char delim,
- char ***out_arg_split, uint *out_num_strs)
+ char ***out_arg_split, unsigned int *out_num_strs)
{
char *arg_extracted = NULL;
const char *arg_ptr = arg;
char **arg_split = NULL;
char delim_str[2];
- int i = 0;
- uint num_strs = 0;
+ unsigned int i = 0;
+ unsigned int num_strs = 0;
int retval = 0;
delim_str[0] = delim;
@@ -126,7 +105,7 @@ static int pam_split_string(const pam_handle_t *pamh, char *arg, char delim,
arg_ptr = strchr(arg_ptr + sizeof(const char), delim);
}
- arg_split = (char **)calloc(num_strs, sizeof(char *));
+ arg_split = calloc(num_strs, sizeof(char *));
if (arg_split == NULL) {
pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate string array");
goto out;
@@ -180,10 +159,10 @@ static int join_dir_strings(char **strp_out, const char *a_str, const char *b_st
return retval;
}
-static int compare_strings(const void * a, const void * b)
+static int compare_strings(const void *a, const void *b)
{
- const char *a_str = *(char **)a;
- const char *b_str = *(char **)b;
+ const char *a_str = *(const char * const *)a;
+ const char *b_str = *(const char * const *)b;
if (a_str == NULL && b_str == NULL) {
return 0;
@@ -205,13 +184,13 @@ static int filter_dirents(const struct dirent *d)
}
static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
- char **motd_dir_path_split, int num_motd_dirs)
+ char **motd_dir_path_split, unsigned int num_motd_dirs, int report_missing)
{
struct dirent ***dirscans = NULL;
- int *dirscans_sizes = NULL;
- int dirscans_size_total = 0;
+ unsigned int *dirscans_sizes = NULL;
+ unsigned int dirscans_size_total = 0;
char **dirnames_all = NULL;
- int i;
+ unsigned int i;
int i_dirnames = 0;
if (pamh == NULL || motd_dir_path_split == NULL) {
@@ -221,29 +200,31 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
goto out;
}
- if ((dirscans = (struct dirent ***)calloc(num_motd_dirs,
- sizeof(struct dirent **))) == NULL) {
+ if ((dirscans = calloc(num_motd_dirs, sizeof(struct dirent **))) == NULL) {
pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirent arrays");
goto out;
}
- if ((dirscans_sizes = (int *)calloc(num_motd_dirs, sizeof(int))) == NULL) {
+ if ((dirscans_sizes = calloc(num_motd_dirs, sizeof(int))) == NULL) {
pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirent array sizes");
goto out;
}
for (i = 0; i < num_motd_dirs; i++) {
- dirscans_sizes[i] = scandir(motd_dir_path_split[i], &(dirscans[i]),
+ int rv;
+ rv = scandir(motd_dir_path_split[i], &(dirscans[i]),
filter_dirents, alphasort);
- if (dirscans_sizes[i] < 0) {
- pam_syslog(pamh, LOG_ERR, "pam_motd: error scanning directory %s", motd_dir_path_split[i]);
- dirscans_sizes[i] = 0;
+ if (rv < 0) {
+ if (errno != ENOENT || report_missing) {
+ pam_syslog(pamh, LOG_ERR, "pam_motd: error scanning directory %s: %m",
+ motd_dir_path_split[i]);
+ }
+ dirscans_sizes[i] = rv;
}
dirscans_size_total += dirscans_sizes[i];
}
/* Allocate space for all file names found in the directories, including duplicates. */
- if ((dirnames_all = (char **)calloc(dirscans_size_total,
- sizeof(char *))) == NULL) {
+ if ((dirnames_all = calloc(dirscans_size_total, sizeof(char *))) == NULL) {
pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirname array");
goto out;
}
@@ -253,7 +234,7 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
}
for (i = 0; i < num_motd_dirs; i++) {
- int j;
+ unsigned int j;
for (j = 0; j < dirscans_sizes[i]; j++) {
dirnames_all[i_dirnames] = dirscans[i][j]->d_name;
@@ -265,7 +246,7 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
sizeof(const char *), compare_strings);
for (i = 0; i < dirscans_size_total; i++) {
- int j;
+ unsigned int j;
if (dirnames_all[i] == NULL) {
continue;
@@ -301,7 +282,8 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
out:
_pam_drop(dirnames_all);
for (i = 0; i < num_motd_dirs; i++) {
- int j;
+ unsigned int j;
+
for (j = 0; j < dirscans_sizes[i]; j++) {
_pam_drop(dirscans[i][j]);
}
@@ -319,12 +301,13 @@ int pam_sm_open_session(pam_handle_t *pamh, int flags,
int retval = PAM_IGNORE;
const char *motd_path = NULL;
char *motd_path_copy = NULL;
- int num_motd_paths = 0;
+ unsigned int num_motd_paths = 0;
char **motd_path_split = NULL;
const char *motd_dir_path = NULL;
char *motd_dir_path_copy = NULL;
- int num_motd_dir_paths = 0;
+ unsigned int num_motd_dir_paths = 0;
char **motd_dir_path_split = NULL;
+ int report_missing;
if (flags & PAM_SILENT) {
return retval;
@@ -360,6 +343,9 @@ int pam_sm_open_session(pam_handle_t *pamh, int flags,
if (motd_path == NULL && motd_dir_path == NULL) {
motd_path = default_motd;
motd_dir_path = default_motd_dir;
+ report_missing = 0;
+ } else {
+ report_missing = 1;
}
if (motd_path != NULL) {
@@ -385,7 +371,7 @@ int pam_sm_open_session(pam_handle_t *pamh, int flags,
}
if (motd_path_split != NULL) {
- int i;
+ unsigned int i;
for (i = 0; i < num_motd_paths; i++) {
int fd = open(motd_path_split[i], O_RDONLY, 0);
@@ -402,7 +388,7 @@ int pam_sm_open_session(pam_handle_t *pamh, int flags,
if (motd_dir_path_split != NULL)
try_to_display_directories_with_overrides(pamh, motd_dir_path_split,
- num_motd_dir_paths);
+ num_motd_dir_paths, report_missing);
out:
_pam_drop(motd_path_copy);
--
2.37.3
From c2c0434bd634a817f2b16ce7f58fc96c04e88b03 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Sun, 26 Apr 2020 11:12:59 +0000
Subject: [PATCH] pam_motd: fix NULL dereference when at least one of motd
directories is not available
* modules/pam_motd/pam_motd.c
(try_to_display_directories_with_overrides): Do not assign -1U to
dirscans_sizes[i] when scandir(motd_dir_path_split[i]) returns an error.
Resolves: https://bugzilla.altlinux.org/38389
Fixes: d57ab221 ("pam_motd: Cleanup the code and avoid unnecessary logging")
---
modules/pam_motd/pam_motd.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c
index df09b7d0..8147c6fd 100644
--- a/modules/pam_motd/pam_motd.c
+++ b/modules/pam_motd/pam_motd.c
@@ -219,6 +219,7 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
pam_syslog(pamh, LOG_ERR, "pam_motd: error scanning directory %s: %m",
motd_dir_path_split[i]);
}
+ } else {
dirscans_sizes[i] = rv;
}
dirscans_size_total += dirscans_sizes[i];
--
2.37.3

57
SOURCES/pam-1.3.1-pam-motd-fix-memory-leak.patch
Unescape View File

@ -0,0 +1,57 @@
From 62cd745d730e5ba13d5d7092ac566fc0b2148e61 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Sun, 26 Apr 2020 11:12:59 +0000
Subject: [PATCH] pam_motd: fix memory leak
pam_motd used to leak memory allocated for each motd file
successfully opened in try_to_display_directories_with_overrides.
* modules/pam_motd/pam_motd.c
(try_to_display_directories_with_overrides): Free abs_path.
Fixes: f9c9c721 ("pam_motd: Support multiple motd paths specified, with filename overrides (#69)")
---
modules/pam_motd/pam_motd.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c
index f0cd317d..3be129a5 100644
--- a/modules/pam_motd/pam_motd.c
+++ b/modules/pam_motd/pam_motd.c
@@ -259,23 +259,23 @@ static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
for (j = 0; j < num_motd_dirs; j++) {
char *abs_path = NULL;
+ int fd;
if (join_dir_strings(&abs_path, motd_dir_path_split[j],
- dirnames_all[i]) < 0) {
+ dirnames_all[i]) < 0 || abs_path == NULL) {
continue;
}
- if (abs_path != NULL) {
- int fd = open(abs_path, O_RDONLY, 0);
- if (fd >= 0) {
- try_to_display_fd(pamh, fd);
- close(fd);
+ fd = open(abs_path, O_RDONLY, 0);
+ _pam_drop(abs_path);
- /* We displayed a file, skip to the next file name. */
- break;
- }
+ if (fd >= 0) {
+ try_to_display_fd(pamh, fd);
+ close(fd);
+
+ /* We displayed a file, skip to the next file name. */
+ break;
}
- _pam_drop(abs_path);
}
}
--
2.35.3

133
SOURCES/pam-1.3.1-pam-motd-fix-segmentation-fault.patch
Unescape View File

@ -0,0 +1,133 @@
From 8eaf5570cf011148a0b55c53570df5edaafebdb0 Mon Sep 17 00:00:00 2001
From: Robert Fairley <rfairley@users.noreply.github.com>
Date: Wed, 21 Nov 2018 02:46:02 -0500
Subject: [PATCH] pam_motd: Fix segmentation fault when no motd_dir specified
(#76)
This fixes a regression introduced by #69, where motd_path was set
to NULL and passed into strdup() if the motd_dir argument was
not specified in the configuration file. This caused a segmentation
fault.
* modules/pam_motd/pam_motd.c: fix checks for NULL in arguments
* xtests/Makefile.am: add test scripts and config file
* xtests/tst-pam_motd.sh: add running tst-pam_motd4.sh
* xtests/tst-pam_motd4.pamd: create
* xtests/tst-pam_motd4.sh: create
---
modules/pam_motd/pam_motd.c | 15 ++++++++++-----
xtests/Makefile.am | 4 ++--
xtests/tst-pam_motd.sh | 1 +
xtests/tst-pam_motd4.pamd | 3 +++
xtests/tst-pam_motd4.sh | 27 +++++++++++++++++++++++++++
5 files changed, 43 insertions(+), 7 deletions(-)
create mode 100644 xtests/tst-pam_motd4.pamd
create mode 100755 xtests/tst-pam_motd4.sh
diff --git a/modules/pam_motd/pam_motd.c b/modules/pam_motd/pam_motd.c
index 1c1cfcfa..ec3ebd58 100644
--- a/modules/pam_motd/pam_motd.c
+++ b/modules/pam_motd/pam_motd.c
@@ -132,7 +132,6 @@ static int pam_split_string(const pam_handle_t *pamh, char *arg, char delim,
goto out;
}
-
arg_extracted = strtok_r(arg, delim_str, &arg);
while (arg_extracted != NULL && i < num_strs) {
arg_split[i++] = arg_extracted;
@@ -363,15 +362,21 @@ int pam_sm_open_session(pam_handle_t *pamh, int flags,
motd_dir_path = default_motd_dir;
}
- motd_path_copy = strdup(motd_path);
+ if (motd_path != NULL) {
+ motd_path_copy = strdup(motd_path);
+ }
+
if (motd_path_copy != NULL) {
- if (pam_split_string(pamh, motd_path_copy, ':', &motd_path_split,
- &num_motd_paths) == 0) {
+ if (pam_split_string(pamh, motd_path_copy, ':',
+ &motd_path_split, &num_motd_paths) == 0) {
goto out;
}
}
- motd_dir_path_copy = strdup(motd_dir_path);
+ if (motd_dir_path != NULL) {
+ motd_dir_path_copy = strdup(motd_dir_path);
+ }
+
if (motd_dir_path_copy != NULL) {
if (pam_split_string(pamh, motd_dir_path_copy, ':',
&motd_dir_path_split, &num_motd_dir_paths) == 0) {
diff --git a/xtests/Makefile.am b/xtests/Makefile.am
index 555d5e33..4d5aba3d 100644
--- a/xtests/Makefile.am
+++ b/xtests/Makefile.am
@@ -34,8 +34,8 @@ EXTRA_DIST = run-xtests.sh tst-pam_dispatch1.pamd tst-pam_dispatch2.pamd \
tst-pam_pwhistory1.pamd tst-pam_pwhistory1.sh \
tst-pam_time1.pamd time.conf \
tst-pam_motd.sh tst-pam_motd1.sh tst-pam_motd2.sh \
- tst-pam_motd3.sh tst-pam_motd1.pamd \
- tst-pam_motd2.pamd tst-pam_motd3.pamd
+ tst-pam_motd3.sh tst-pam_motd4.sh tst-pam_motd1.pamd \
+ tst-pam_motd2.pamd tst-pam_motd3.pamd tst-pam_motd4.pamd
XTESTS = tst-pam_dispatch1 tst-pam_dispatch2 tst-pam_dispatch3 \
tst-pam_dispatch4 tst-pam_dispatch5 \
diff --git a/xtests/tst-pam_motd.sh b/xtests/tst-pam_motd.sh
index 9b0c38f6..90801280 100755
--- a/xtests/tst-pam_motd.sh
+++ b/xtests/tst-pam_motd.sh
@@ -5,3 +5,4 @@ set -e
./tst-pam_motd1.sh
./tst-pam_motd2.sh
./tst-pam_motd3.sh
+./tst-pam_motd4.sh
diff --git a/xtests/tst-pam_motd4.pamd b/xtests/tst-pam_motd4.pamd
new file mode 100644
index 00000000..9dc311ad
--- /dev/null
+++ b/xtests/tst-pam_motd4.pamd
@@ -0,0 +1,3 @@
+#%PAM-1.0
+session required pam_permit.so
+session optional pam_motd.so motd=tst-pam_motd4.d/etc/motd
diff --git a/xtests/tst-pam_motd4.sh b/xtests/tst-pam_motd4.sh
new file mode 100755
index 00000000..6022177f
--- /dev/null
+++ b/xtests/tst-pam_motd4.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+TST_DIR="tst-pam_motd4.d"
+
+function tst_cleanup() {
+ rm -rf "${TST_DIR}"
+ rm -f tst-pam_motd4.out
+}
+
+mkdir -p ${TST_DIR}/etc
+
+# Verify the case of single motd with no motd_dir given in tst-pam_motd4.pamd
+echo "motd: /etc/motd" > ${TST_DIR}/etc/motd
+
+./tst-pam_motd tst-pam_motd4 > tst-pam_motd4.out
+
+RET=$?
+
+motd_to_show_output=$(cat tst-pam_motd4.out | grep "motd: /etc/motd")
+if [ -z "${motd_to_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+tst_cleanup
+exit $RET
--
2.35.1

691
SOURCES/pam-1.3.1-pam-motd-support-multiple-motd-paths.patch
Unescape View File

@ -0,0 +1,691 @@
diff -up Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml
--- Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.939663167 +0200
+++ Linux-PAM-1.3.1/modules/pam_motd/pam_motd.8.xml 2022-04-25 12:34:43.506582206 +0200
@@ -21,6 +21,9 @@
<arg choice="opt">
motd=<replaceable>/path/filename</replaceable>
</arg>
+ <arg choice="opt">
+ motd_dir=<replaceable>/path/dirname.d</replaceable>
+ </arg>
</cmdsynopsis>
</refsynopsisdiv>
@@ -31,18 +34,49 @@
<para>
pam_motd is a PAM module that can be used to display
arbitrary motd (message of the day) files after a successful
- login. By default the <filename>/etc/motd</filename> file and
- all files from <filename>/etc/motd.d</filename> are
- shown. The message size is limited to 64KB.
+ login. By default, pam_motd shows files in the
+ following locations:
+ </para>
+ <para>
+ <simplelist type='vert'>
+ <member><filename>/etc/motd</filename></member>
+ <member><filename>/run/motd</filename></member>
+ <member><filename>/usr/lib/motd</filename></member>
+ <member><filename>/etc/motd.d/</filename></member>
+ <member><filename>/run/motd.d/</filename></member>
+ <member><filename>/usr/lib/motd.d/</filename></member>
+ </simplelist>
+ </para>
+ <para>
+ Each message size is limited to 64KB.
+ </para>
+ <para>
+ If <filename>/etc/motd</filename> does not exist,
+ then <filename>/run/motd</filename> is shown. If
+ <filename>/run/motd</filename> does not exist, then
+ <filename>/usr/lib/motd</filename> is shown.
+ </para>
+ <para>
+ Similar overriding behavior applies to the directories.
+ Files in <filename>/etc/motd.d/</filename> override files
+ with the same name in <filename>/run/motd.d/</filename> and
+ <filename>/usr/lib/motd.d/</filename>. Files in <filename>/run/motd.d/</filename>
+ override files with the same name in <filename>/usr/lib/motd.d/</filename>.
+ </para>
+ <para>
+ Files in the directories listed above are displayed in lexicographic
+ order by name. Moreover, the files are filtered by reading them with the
+ credentials of the target user authenticating on the system.
</para>
<para>
To silence a message,
a symbolic link with target <filename>/dev/null</filename>
may be placed in <filename>/etc/motd.d</filename> with
the same filename as the message to be silenced. Example:
+ Creating a symbolic link as follows silences <filename>/usr/lib/motd.d/my_motd</filename>.
</para>
<para>
- <command>ln -sfn /dev/null /etc/motd.d/my_motd</command>
+ <command>ln -s /dev/null /etc/motd.d/my_motd</command>
</para>
</refsect1>
@@ -56,8 +90,10 @@
</term>
<listitem>
<para>
- The <filename>/path/filename</filename> file is displayed
- as message of the day.
+ The <filename>/path/filename</filename> file is displayed
+ as message of the day. Multiple paths to try can be
+ specified as a colon-separated list. By default this option
+ is set to <filename>/etc/motd:/run/motd:/usr/lib/motd</filename>.
</para>
</listitem>
</varlistentry>
@@ -68,16 +104,17 @@
<listitem>
<para>
The <filename>/path/dirname.d</filename> directory is scanned
- and each file contained inside of it is displayed.
+ and each file contained inside of it is displayed. Multiple
+ directories to scan can be specified as a colon-separated list.
+ By default this option is set to <filename>/etc/motd.d:/run/motd.d:/usr/lib/motd.d</filename>.
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
- When no options are given, the default is to display both
- <filename>/etc/motd</filename> and the contents of
- <filename>/etc/motd.d</filename>. Specifying either option (or both)
- will disable this default behavior.
+ When no options are given, the default behavior applies for both
+ options. Specifying either option (or both) will disable the
+ default behavior for both options.
</para>
</refsect1>
diff -up Linux-PAM-1.3.1/modules/pam_motd/pam_motd.c.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/modules/pam_motd/pam_motd.c
--- Linux-PAM-1.3.1/modules/pam_motd/pam_motd.c.pam_motd-support-multiple-motd-paths1 2018-05-18 11:50:46.000000000 +0200
+++ Linux-PAM-1.3.1/modules/pam_motd/pam_motd.c 2022-04-25 12:32:36.947663225 +0200
@@ -33,8 +33,8 @@
*/
#define PAM_SM_SESSION
-#define DEFAULT_MOTD "/etc/motd"
-#define DEFAULT_MOTD_D "/etc/motd.d"
+#define DEFAULT_MOTD "/etc/motd:/run/motd:/usr/lib/motd"
+#define DEFAULT_MOTD_D "/etc/motd.d:/run/motd.d:/usr/lib/motd.d"
#include <security/pam_modules.h>
#include <security/pam_modutil.h>
@@ -97,12 +97,235 @@ static void try_to_display_directory(pam
}
}
+/*
+ * Split a DELIM-separated string ARG into an array.
+ * Outputs a newly allocated array of strings OUT_ARG_SPLIT
+ * and the number of strings OUT_NUM_STRS.
+ * Returns 0 in case of error, 1 in case of success.
+ */
+static int pam_split_string(const pam_handle_t *pamh, char *arg, char delim,
+ char ***out_arg_split, uint *out_num_strs)
+{
+ char *arg_extracted = NULL;
+ const char *arg_ptr = arg;
+ char **arg_split = NULL;
+ char delim_str[2];
+ int i = 0;
+ uint num_strs = 0;
+ int retval = 0;
+
+ delim_str[0] = delim;
+ delim_str[1] = '\0';
+
+ if (arg == NULL) {
+ goto out;
+ }
+
+ while (arg_ptr != NULL) {
+ num_strs++;
+ arg_ptr = strchr(arg_ptr + sizeof(const char), delim);
+ }
+
+ arg_split = (char **)calloc(num_strs, sizeof(char *));
+ if (arg_split == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate string array");
+ goto out;
+ }
+
+
+ arg_extracted = strtok_r(arg, delim_str, &arg);
+ while (arg_extracted != NULL && i < num_strs) {
+ arg_split[i++] = arg_extracted;
+ arg_extracted = strtok_r(NULL, delim_str, &arg);
+ }
+
+ retval = 1;
+
+ out:
+ *out_num_strs = num_strs;
+ *out_arg_split = arg_split;
+
+ return retval;
+}
+
+/* Join A_STR and B_STR, inserting a "/" between them if one is not already trailing
+ * in A_STR or beginning B_STR. A pointer to a newly allocated string holding the
+ * joined string is returned in STRP_OUT.
+ * Returns -1 in case of error, or the number of bytes in the joined string in
+ * case of success. */
+static int join_dir_strings(char **strp_out, const char *a_str, const char *b_str)
+{
+ int has_sep = 0;
+ int retval = -1;
+ char *join_strp = NULL;
+
+ if (strp_out == NULL || a_str == NULL || b_str == NULL) {
+ goto out;
+ }
+ if (strlen(a_str) == 0) {
+ goto out;
+ }
+
+ has_sep = (a_str[strlen(a_str) - 1] == '/') || (b_str[0] == '/');
+
+ retval = asprintf(&join_strp, "%s%s%s", a_str,
+ (has_sep == 1) ? "" : "/", b_str);
+
+ if (retval < 0) {
+ goto out;
+ }
+
+ *strp_out = join_strp;
+
+ out:
+ return retval;
+}
+
+static int compare_strings(const void * a, const void * b)
+{
+ const char *a_str = *(char **)a;
+ const char *b_str = *(char **)b;
+
+ if (a_str == NULL && b_str == NULL) {
+ return 0;
+ }
+ else if (a_str == NULL) {
+ return -1;
+ }
+ else if (b_str == NULL) {
+ return 1;
+ }
+ else {
+ return strcmp(a_str, b_str);
+ }
+}
+
+static int filter_dirents(const struct dirent *d)
+{
+ return (d->d_type == DT_REG || d->d_type == DT_LNK);
+}
+
+static void try_to_display_directories_with_overrides(pam_handle_t *pamh,
+ char **motd_dir_path_split, int num_motd_dirs)
+{
+ struct dirent ***dirscans = NULL;
+ int *dirscans_sizes = NULL;
+ int dirscans_size_total = 0;
+ char **dirnames_all = NULL;
+ int i;
+ int i_dirnames = 0;
+
+ if (pamh == NULL || motd_dir_path_split == NULL) {
+ goto out;
+ }
+ if (num_motd_dirs < 1) {
+ goto out;
+ }
+
+ if ((dirscans = (struct dirent ***)calloc(num_motd_dirs,
+ sizeof(struct dirent **))) == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirent arrays");
+ goto out;
+ }
+ if ((dirscans_sizes = (int *)calloc(num_motd_dirs, sizeof(int))) == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirent array sizes");
+ goto out;
+ }
+
+ for (i = 0; i < num_motd_dirs; i++) {
+ dirscans_sizes[i] = scandir(motd_dir_path_split[i], &(dirscans[i]),
+ filter_dirents, alphasort);
+ if (dirscans_sizes[i] < 0) {
+ pam_syslog(pamh, LOG_ERR, "pam_motd: error scanning directory %s", motd_dir_path_split[i]);
+ dirscans_sizes[i] = 0;
+ }
+ dirscans_size_total += dirscans_sizes[i];
+ }
+
+ /* Allocate space for all file names found in the directories, including duplicates. */
+ if ((dirnames_all = (char **)calloc(dirscans_size_total,
+ sizeof(char *))) == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "pam_motd: failed to allocate dirname array");
+ goto out;
+ }
+
+ for (i = 0; i < dirscans_size_total; i++) {
+ dirnames_all[i] = NULL;
+ }
+
+ for (i = 0; i < num_motd_dirs; i++) {
+ int j;
+
+ for (j = 0; j < dirscans_sizes[i]; j++) {
+ dirnames_all[i_dirnames] = dirscans[i][j]->d_name;
+ i_dirnames++;
+ }
+ }
+
+ qsort(dirnames_all, dirscans_size_total,
+ sizeof(const char *), compare_strings);
+
+ for (i = 0; i < dirscans_size_total; i++) {
+ int j;
+
+ if (dirnames_all[i] == NULL) {
+ continue;
+ }
+
+ /* Skip duplicate file names. */
+ if (i > 0 && strcmp(dirnames_all[i], dirnames_all[i - 1]) == 0) {
+ continue;
+ }
+
+ for (j = 0; j < num_motd_dirs; j++) {
+ char *abs_path = NULL;
+
+ if (join_dir_strings(&abs_path, motd_dir_path_split[j],
+ dirnames_all[i]) < 0) {
+ continue;
+ }
+
+ if (abs_path != NULL) {
+ int fd = open(abs_path, O_RDONLY, 0);
+ if (fd >= 0) {
+ try_to_display_fd(pamh, fd);
+ close(fd);
+
+ /* We displayed a file, skip to the next file name. */
+ break;
+ }
+ }
+ _pam_drop(abs_path);
+ }
+ }
+
+ out:
+ _pam_drop(dirnames_all);
+ for (i = 0; i < num_motd_dirs; i++) {
+ int j;
+ for (j = 0; j < dirscans_sizes[i]; j++) {
+ _pam_drop(dirscans[i][j]);
+ }
+ _pam_drop(dirscans[i]);
+ }
+ _pam_drop(dirscans_sizes);
+ _pam_drop(dirscans);
+
+ return;
+}
+
int pam_sm_open_session(pam_handle_t *pamh, int flags,
int argc, const char **argv)
{
int retval = PAM_IGNORE;
const char *motd_path = NULL;
+ char *motd_path_copy = NULL;
+ int num_motd_paths = 0;
+ char **motd_path_split = NULL;
const char *motd_dir_path = NULL;
+ char *motd_dir_path_copy = NULL;
+ int num_motd_dir_paths = 0;
+ char **motd_dir_path_split = NULL;
if (flags & PAM_SILENT) {
return retval;
@@ -140,17 +363,47 @@ int pam_sm_open_session(pam_handle_t *pa
motd_dir_path = default_motd_dir;
}
- if (motd_path != NULL) {
- int fd = open(motd_path, O_RDONLY, 0);
+ motd_path_copy = strdup(motd_path);
+ if (motd_path_copy != NULL) {
+ if (pam_split_string(pamh, motd_path_copy, ':', &motd_path_split,
+ &num_motd_paths) == 0) {
+ goto out;
+ }
+ }
+
+ motd_dir_path_copy = strdup(motd_dir_path);
+ if (motd_dir_path_copy != NULL) {
+ if (pam_split_string(pamh, motd_dir_path_copy, ':',
+ &motd_dir_path_split, &num_motd_dir_paths) == 0) {
+ goto out;
+ }
+ }
+
+ if (motd_path_split != NULL) {
+ int i;
+
+ for (i = 0; i < num_motd_paths; i++) {
+ int fd = open(motd_path_split[i], O_RDONLY, 0);
- if (fd >= 0) {
- try_to_display_fd(pamh, fd);
- close(fd);
+ if (fd >= 0) {
+ try_to_display_fd(pamh, fd);
+ close(fd);
+
+ /* We found and displayed a file, move onto next filename. */
+ break;
+ }
}
}
- if (motd_dir_path != NULL)
- try_to_display_directory(pamh, motd_dir_path);
+ if (motd_dir_path_split != NULL)
+ try_to_display_directories_with_overrides(pamh, motd_dir_path_split,
+ num_motd_dir_paths);
+
+ out:
+ _pam_drop(motd_path_copy);
+ _pam_drop(motd_path_split);
+ _pam_drop(motd_dir_path_copy);
+ _pam_drop(motd_dir_path_split);
return retval;
}
diff -up Linux-PAM-1.3.1/xtests/Makefile.am.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/Makefile.am
--- Linux-PAM-1.3.1/xtests/Makefile.am.pam_motd-support-multiple-motd-paths1 2017-02-10 11:10:15.000000000 +0100
+++ Linux-PAM-1.3.1/xtests/Makefile.am 2022-04-25 12:32:36.947663225 +0200
@@ -32,7 +32,10 @@ EXTRA_DIST = run-xtests.sh tst-pam_dispa
tst-pam_substack5.pamd tst-pam_substack5a.pamd tst-pam_substack5.sh \
tst-pam_assemble_line1.pamd tst-pam_assemble_line1.sh \
tst-pam_pwhistory1.pamd tst-pam_pwhistory1.sh \
- tst-pam_time1.pamd time.conf
+ tst-pam_time1.pamd time.conf \
+ tst-pam_motd.sh tst-pam_motd1.sh tst-pam_motd2.sh \
+ tst-pam_motd3.sh tst-pam_motd1.pamd \
+ tst-pam_motd2.pamd tst-pam_motd3.pamd
XTESTS = tst-pam_dispatch1 tst-pam_dispatch2 tst-pam_dispatch3 \
tst-pam_dispatch4 tst-pam_dispatch5 \
@@ -41,7 +44,7 @@ XTESTS = tst-pam_dispatch1 tst-pam_dispa
tst-pam_access1 tst-pam_access2 tst-pam_access3 \
tst-pam_access4 tst-pam_limits1 tst-pam_succeed_if1 \
tst-pam_group1 tst-pam_authfail tst-pam_authsucceed \
- tst-pam_pwhistory1 tst-pam_time1
+ tst-pam_pwhistory1 tst-pam_time1 tst-pam_motd
NOSRCTESTS = tst-pam_substack1 tst-pam_substack2 tst-pam_substack3 \
tst-pam_substack4 tst-pam_substack5 tst-pam_assemble_line1
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd1.pamd.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd1.pamd
--- Linux-PAM-1.3.1/xtests/tst-pam_motd1.pamd.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd1.pamd 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,3 @@
+#%PAM-1.0
+session required pam_permit.so
+session optional pam_motd.so motd=tst-pam_motd1.d/etc/motd motd_dir=tst-pam_motd1.d/etc/motd.d
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd1.sh.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd1.sh
--- Linux-PAM-1.3.1/xtests/tst-pam_motd1.sh.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd1.sh 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+TST_DIR="tst-pam_motd1.d"
+
+function tst_cleanup() {
+ rm -rf "${TST_DIR}"
+ rm -f tst-pam_motd1.out
+}
+
+mkdir -p ${TST_DIR}
+mkdir -p ${TST_DIR}/etc/motd.d
+
+# Verify the case of single motd and motd.d directory works
+echo "motd: /etc/motd" > ${TST_DIR}/etc/motd
+echo "motd: /etc/motd.d/test" > ${TST_DIR}/etc/motd.d/test
+
+./tst-pam_motd tst-pam_motd1 > tst-pam_motd1.out
+
+RET=$?
+
+motd_to_show_output=$(cat tst-pam_motd1.out | grep "motd: /etc/motd")
+if [ -z "${motd_to_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+motd_dir_to_show_output=$(cat tst-pam_motd1.out | grep "motd: /etc/motd.d/test")
+if [ -z "${motd_dir_to_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+tst_cleanup
+exit $RET
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd2.pamd.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd2.pamd
--- Linux-PAM-1.3.1/xtests/tst-pam_motd2.pamd.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd2.pamd 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,3 @@
+#%PAM-1.0
+session required pam_permit.so
+session optional pam_motd.so motd=tst-pam_motd2.d/etc/motd:tst-pam_motd2.d/run/motd:tst-pam_motd2.d/usr/lib/motd motd_dir=tst-pam_motd2.d/etc/motd.d:tst-pam_motd2.d/run/motd.d:tst-pam_motd2.d/usr/lib/motd.d
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd2.sh.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd2.sh
--- Linux-PAM-1.3.1/xtests/tst-pam_motd2.sh.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd2.sh 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+TST_DIR="tst-pam_motd2.d"
+
+function tst_cleanup() {
+ rm -rf "${TST_DIR}"
+ rm -f tst-pam_motd2.out
+}
+
+mkdir -p ${TST_DIR}
+mkdir -p ${TST_DIR}/etc/motd.d
+mkdir -p ${TST_DIR}/run/motd.d
+mkdir -p ${TST_DIR}/usr/lib/motd.d
+
+echo "motd: /etc/motd" > ${TST_DIR}/etc/motd
+echo "motd: /run/motd" > ${TST_DIR}/run/motd
+echo "motd: /usr/lib/motd" > ${TST_DIR}/usr/lib/motd
+
+# Drop a motd file in test directories such that every overriding
+# condition (for 3 directories in this case) will be seen.
+echo "motd: e0r0u1 in usr/lib - will show" > ${TST_DIR}/usr/lib/motd.d/e0r0u1.motd
+echo "motd: e0r1u0 in run - will show" > ${TST_DIR}/run/motd.d/e0r1u0.motd
+echo "motd: e0r1u1 in usr/lib - not show" > ${TST_DIR}/usr/lib/motd.d/e0r1u1.motd
+echo "motd: e0r1u1 in run - will show" > ${TST_DIR}/run/motd.d/e0r1u1.motd
+echo "motd: e1r0u0 in etc - will show" > ${TST_DIR}/etc/motd.d/e1r0u0.motd
+echo "motd: e1r0u1 in usr/lib - not show" > ${TST_DIR}/usr/lib/motd.d/e1r0u1.motd
+echo "motd: e1r0u1 in etc - will show" > ${TST_DIR}/etc/motd.d/e1r0u1.motd
+echo "motd: e1r1u0 in run - not show" > ${TST_DIR}/run/motd.d/e1r1u0.motd
+echo "motd: e1r1u0 in etc - will show" > ${TST_DIR}/etc/motd.d/e1r1u0.motd
+echo "motd: e1r1u1 in usr/lib - not show" > ${TST_DIR}/usr/lib/motd.d/e1r1u1.motd
+echo "motd: e1r1u1 in run - not show" > ${TST_DIR}/run/motd.d/e1r1u1.motd
+echo "motd: e1r1u1 in etc - will show" > ${TST_DIR}/etc/motd.d/e1r1u1.motd
+
+./tst-pam_motd tst-pam_motd2 > tst-pam_motd2.out
+
+RET=$?
+
+motd_to_show_output=$(cat tst-pam_motd2.out | grep "motd: /etc/motd")
+if [ -z "${motd_to_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+motd_dir_not_show_output=$(cat tst-pam_motd2.out | grep "not show")
+if [ -n "${motd_dir_not_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+tst_cleanup
+exit $RET
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd3.pamd.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd3.pamd
--- Linux-PAM-1.3.1/xtests/tst-pam_motd3.pamd.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd3.pamd 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,3 @@
+#%PAM-1.0
+session required pam_permit.so
+session optional pam_motd.so motd=tst-pam_motd3.d/etc/motd:tst-pam_motd3.d/run/motd:tst-pam_motd3.d/usr/lib/motd motd_dir=tst-pam_motd3.d/etc/motd.d:tst-pam_motd3.d/run/motd.d:tst-pam_motd3.d/usr/lib/motd.d
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd3.sh.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd3.sh
--- Linux-PAM-1.3.1/xtests/tst-pam_motd3.sh.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd3.sh 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+TST_DIR="tst-pam_motd3.d"
+
+function tst_cleanup() {
+ rm -rf "${TST_DIR}"
+ rm -f tst-pam_motd3.out
+}
+
+mkdir -p ${TST_DIR}
+mkdir -p ${TST_DIR}/etc/motd.d
+mkdir -p ${TST_DIR}/run/motd.d
+mkdir -p ${TST_DIR}/usr/lib/motd.d
+
+# Verify motd is still displayed when not overridden
+echo "motd: test-show in run - show" > ${TST_DIR}/run/motd.d/test-show.motd
+
+# Test overridden by a symlink to a file that isn't /dev/null; symlink target should show
+echo "motd: hidden-by-symlink in usr/lib - not show" > ${TST_DIR}/usr/lib/motd.d/hidden-by-symlink.motd
+echo "motd: test-from-symlink - show" > ${TST_DIR}/test-from-symlink.motd
+ln -sr ${TST_DIR}/test-from-symlink.motd ${TST_DIR}/run/motd.d/hidden-by-symlink.motd
+
+# Test hidden by a null symlink
+echo "motd: hidden-by-null-symlink in run - not show" > ${TST_DIR}/run/motd.d/hidden-by-null-symlink.motd
+ln -s /dev/null ${TST_DIR}/etc/motd.d/hidden-by-null-symlink.motd
+
+./tst-pam_motd tst-pam_motd3 > tst-pam_motd3.out
+
+RET=$?
+
+motd_dir_not_show_output=$(cat tst-pam_motd3.out | grep "not show")
+if [ -n "${motd_dir_not_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+motd_test_show_output=$(cat tst-pam_motd3.out | grep "test-show.*- show")
+if [ -z "${motd_test_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+motd_general_symlink_show_output=$(cat tst-pam_motd3.out | grep "test-from-symlink.*- show")
+if [ -z "${motd_general_symlink_show_output}" ];
+then
+ tst_cleanup
+ exit 1
+fi
+
+tst_cleanup
+exit $RET
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd.c.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd.c
--- Linux-PAM-1.3.1/xtests/tst-pam_motd.c.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd.c 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,69 @@
+/*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <security/pam_appl.h>
+#include <security/pam_misc.h>
+
+static struct pam_conv conv = {
+ misc_conv,
+ NULL
+};
+
+int main(int argc, char *argv[])
+{
+ pam_handle_t *pamh=NULL;
+ char *tst_arg = NULL;
+ int retval;
+
+ if (argc > 1)
+ tst_arg = argv[1];
+
+ retval = pam_start(tst_arg, NULL, &conv, &pamh);
+
+ retval = pam_open_session(pamh, 0);
+
+ retval = pam_close_session(pamh, 0);
+
+ if (pam_end(pamh,retval) != PAM_SUCCESS) { /* close Linux-PAM */
+ pamh = NULL;
+ exit(1);
+ }
+
+ return ( retval == PAM_SUCCESS ? 0:1 ); /* indicate success */
+}
diff -up Linux-PAM-1.3.1/xtests/tst-pam_motd.sh.pam_motd-support-multiple-motd-paths1 Linux-PAM-1.3.1/xtests/tst-pam_motd.sh
--- Linux-PAM-1.3.1/xtests/tst-pam_motd.sh.pam_motd-support-multiple-motd-paths1 2022-04-25 12:32:36.947663225 +0200
+++ Linux-PAM-1.3.1/xtests/tst-pam_motd.sh 2022-04-25 12:32:36.947663225 +0200
@@ -0,0 +1,7 @@
+#!/bin/bash
+
+set -e
+
+./tst-pam_motd1.sh
+./tst-pam_motd2.sh
+./tst-pam_motd3.sh

573
SOURCES/pam-1.3.1-pam-pwhistory-load-conf-from-file.patch
Unescape View File

@ -0,0 +1,573 @@
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/Makefile.am.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/Makefile.am
--- Linux-PAM-1.3.1/modules/pam_pwhistory/Makefile.am.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.709355179 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/Makefile.am 2022-09-29 10:13:35.780355766 +0200
@@ -10,9 +10,10 @@ EXTRA_DIST = README $(MANS) $(XMLS) tst-
TESTS = tst-pam_pwhistory
-man_MANS = pam_pwhistory.8 pwhistory_helper.8
+man_MANS = pam_pwhistory.8 pwhistory_helper.8 pwhistory.conf.5
-XMLS = README.xml pam_pwhistory.8.xml pwhistory_helper.8.xml
+XMLS = README.xml pam_pwhistory.8.xml pwhistory_helper.8.xml \
+ pwhistory.conf.5.xml
securelibdir = $(SECUREDIR)
secureconfdir = $(SCONFIGDIR)
@@ -25,12 +26,14 @@ if HAVE_VERSIONING
pam_pwhistory_la_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
endif
-noinst_HEADERS = opasswd.h
+noinst_HEADERS = opasswd.h pwhistory_config.h
+
+dist_secureconf_DATA = pwhistory.conf
securelib_LTLIBRARIES = pam_pwhistory.la
pam_pwhistory_la_CFLAGS = $(AM_CFLAGS)
pam_pwhistory_la_LIBADD = $(top_builddir)/libpam/libpam.la @LIBCRYPT@ @LIBSELINUX@
-pam_pwhistory_la_SOURCES = pam_pwhistory.c opasswd.c
+pam_pwhistory_la_SOURCES = pam_pwhistory.c opasswd.c pwhistory_config.c
sbin_PROGRAMS = pwhistory_helper
pwhistory_helper_CFLAGS = $(AM_CFLAGS) -DHELPER_COMPILE=\"pwhistory_helper\" @PIE_CFLAGS@
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.8.xml.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.8.xml
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.8.xml.pam-pwhistory-load-conf-from-file 2017-02-10 11:10:15.000000000 +0100
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.8.xml 2022-09-29 10:13:35.780355766 +0200
@@ -36,6 +36,9 @@
<arg choice="opt">
authtok_type=<replaceable>STRING</replaceable>
</arg>
+ <arg choice="opt">
+ conf=<replaceable>/path/to/config-file</replaceable>
+ </arg>
</cmdsynopsis>
</refsynopsisdiv>
@@ -104,7 +107,7 @@
<listitem>
<para>
The last <replaceable>N</replaceable> passwords for each
- user are saved in <filename>/etc/security/opasswd</filename>.
+ user are saved.
The default is <emphasis>10</emphasis>. Value of
<emphasis>0</emphasis> makes the module to keep the existing
contents of the <filename>opasswd</filename> file unchanged.
@@ -137,7 +140,26 @@
</listitem>
</varlistentry>
+ <varlistentry>
+ <term>
+ <option>conf=<replaceable>/path/to/config-file</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Use another configuration file instead of the default
+ <filename>/etc/security/pwhistory.conf</filename>.
+ </para>
+ </listitem>
+ </varlistentry>
+
</variablelist>
+ <para>
+ The options for configuring the module behavior are described in the
+ <citerefentry><refentrytitle>pwhistory.conf</refentrytitle>
+ <manvolnum>5</manvolnum></citerefentry> manual page. The options
+ specified on the module command line override the values from the
+ configuration file.
+ </para>
</refsect1>
<refsect1 id="pam_pwhistory-types">
@@ -223,6 +245,9 @@ password required pam_unix.so
<title>SEE ALSO</title>
<para>
<citerefentry>
+ <refentrytitle>pwhistory.conf</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
+ <citerefentry>
<refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum>
</citerefentry>,
<citerefentry>
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.c.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.c
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.c.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.711355195 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pam_pwhistory.c 2022-09-29 10:13:35.780355766 +0200
@@ -62,18 +62,11 @@
#include <security/_pam_macros.h>
#include "opasswd.h"
+#include "pwhistory_config.h"
#define DEFAULT_BUFLEN 2048
#define MAX_FD_NO 20000
-struct options_t {
- int debug;
- int enforce_for_root;
- int remember;
- int tries;
-};
-typedef struct options_t options_t;
-
static void
parse_option (pam_handle_t *pamh, const char *argv, options_t *options)
@@ -304,6 +297,8 @@ pam_sm_chauthtok (pam_handle_t *pamh, in
options.remember = 10;
options.tries = 1;
+ parse_config_file(pamh, argc, argv, &options);
+
/* Parse parameters for module */
for ( ; argc-- > 0; argv++)
parse_option (pamh, *argv, &options);
@@ -311,7 +306,6 @@ pam_sm_chauthtok (pam_handle_t *pamh, in
if (options.debug)
pam_syslog (pamh, LOG_DEBUG, "pam_sm_chauthtok entered");
-
if (options.remember == 0)
return PAM_IGNORE;
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.5.xml.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.5.xml
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.5.xml.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.780355766 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.5.xml 2022-09-29 10:13:35.780355766 +0200
@@ -0,0 +1,155 @@
+<?xml version="1.0" encoding='UTF-8'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+ "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+
+<refentry id="pwhistory.conf">
+
+ <refmeta>
+ <refentrytitle>pwhistory.conf</refentrytitle>
+ <manvolnum>5</manvolnum>
+ <refmiscinfo class="sectdesc">Linux-PAM Manual</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id="pwhistory.conf-name">
+ <refname>pwhistory.conf</refname>
+ <refpurpose>pam_pwhistory configuration file</refpurpose>
+ </refnamediv>
+
+ <refsect1 id="pwhistory.conf-description">
+
+ <title>DESCRIPTION</title>
+ <para>
+ <emphasis remap='B'>pwhistory.conf</emphasis> provides a way to configure the
+ default settings for saving the last passwords for each user.
+ This file is read by the <emphasis>pam_pwhistory</emphasis> module and is the
+ preferred method over configuring <emphasis>pam_pwhistory</emphasis> directly.
+ </para>
+ <para>
+ The file has a very simple <emphasis>name = value</emphasis> format with possible comments
+ starting with <emphasis>#</emphasis> character. The whitespace at the beginning of line, end
+ of line, and around the <emphasis>=</emphasis> sign is ignored.
+ </para>
+ </refsect1>
+
+ <refsect1 id="pwhistory.conf-options">
+
+ <title>OPTIONS</title>
+ <variablelist>
+ <varlistentry>
+ <term>
+ <option>debug</option>
+ </term>
+ <listitem>
+ <para>
+ Turns on debugging via
+ <citerefentry>
+ <refentrytitle>syslog</refentrytitle><manvolnum>3</manvolnum>
+ </citerefentry>.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>enforce_for_root</option>
+ </term>
+ <listitem>
+ <para>
+ If this option is set, the check is enforced for root, too.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>remember=<replaceable>N</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ The last <replaceable>N</replaceable> passwords for each
+ user are saved.
+ The default is <emphasis>10</emphasis>. Value of
+ <emphasis>0</emphasis> makes the module to keep the existing
+ contents of the <filename>opasswd</filename> file unchanged.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>retry=<replaceable>N</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Prompt user at most <replaceable>N</replaceable> times
+ before returning with error. The default is 1.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term>
+ <option>file=<replaceable>/path/filename</replaceable></option>
+ </term>
+ <listitem>
+ <para>
+ Store password history in file
+ <replaceable>/path/filename</replaceable> rather than the default
+ location. The default location is
+ <filename>/etc/security/opasswd</filename>.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='pwhistory.conf-examples'>
+ <title>EXAMPLES</title>
+ <para>
+ /etc/security/pwhistory.conf file example:
+ </para>
+ <programlisting>
+debug
+remember=5
+file=/tmp/opasswd
+ </programlisting>
+ </refsect1>
+
+ <refsect1 id="pwhistory.conf-files">
+ <title>FILES</title>
+ <variablelist>
+ <varlistentry>
+ <term><filename>/etc/security/pwhistory.conf</filename></term>
+ <listitem>
+ <para>the config file for custom options</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='pwhistory.conf-see_also'>
+ <title>SEE ALSO</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>pwhistory</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam_pwhistory</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam.conf</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam.d</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+
+ <refsect1 id='pwhistory.conf-author'>
+ <title>AUTHOR</title>
+ <para>
+ pam_pwhistory was written by Thorsten Kukuk. The support for
+ pwhistory.conf was written by Iker Pedrosa.
+ </para>
+ </refsect1>
+
+</refentry>
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.c.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.c
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.c.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.781355775 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.c 2022-09-29 10:14:33.377832622 +0200
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2022 Iker Pedrosa <ipedrosa@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <ctype.h>
+
+#include <security/pam_modutil.h>
+
+#include "pam_inline.h"
+#include "pwhistory_config.h"
+
+#define PWHISTORY_DEFAULT_CONF "/etc/security/pwhistory.conf"
+
+/* lookup a value for key in login.defs file or similar key value format */
+static char *
+pwhistory_search_key(pam_handle_t *pamh UNUSED,
+ const char *file_name,
+ const char *key)
+{
+ FILE *fp;
+ char *buf = NULL;
+ size_t buflen = 0;
+ char *retval = NULL;
+
+#ifdef USE_ECONF
+ if (strcmp (file_name, LOGIN_DEFS) == 0)
+ return econf_search_key ("login", ".defs", key);
+#endif
+
+ fp = fopen(file_name, "r");
+ if (NULL == fp)
+ return NULL;
+
+ while (!feof(fp)) {
+ char *tmp, *cp;
+#if defined(HAVE_GETLINE)
+ ssize_t n = getline(&buf, &buflen, fp);
+#elif defined (HAVE_GETDELIM)
+ ssize_t n = getdelim(&buf, &buflen, '\n', fp);
+#else
+ ssize_t n;
+
+ if (buf == NULL) {
+ buflen = BUF_SIZE;
+ buf = malloc(buflen);
+ if (buf == NULL) {
+ fclose(fp);
+ return NULL;
+ }
+ }
+ buf[0] = '\0';
+ if (fgets(buf, buflen - 1, fp) == NULL)
+ break;
+ else if (buf != NULL)
+ n = strlen(buf);
+ else
+ n = 0;
+#endif /* HAVE_GETLINE / HAVE_GETDELIM */
+ cp = buf;
+
+ if (n < 1)
+ break;
+ if (cp[n - 1] == '\n')
+ cp[n - 1] = '\0';
+
+ tmp = strchr(cp, '#'); /* remove comments */
+ if (tmp)
+ *tmp = '\0';
+ while (isspace((int)*cp)) /* remove spaces and tabs */
+ ++cp;
+ if (*cp == '\0') /* ignore empty lines */
+ continue;
+
+ tmp = strsep (&cp, " \t=");
+ if (cp != NULL)
+ while (isspace((int)*cp) || *cp == '=')
+ ++cp;
+ else
+ cp = buf + n; /* empty string */
+
+ if (strcasecmp(tmp, key) == 0) {
+ retval = strdup(cp);
+ break;
+ }
+ }
+ fclose(fp);
+
+ free(buf);
+
+ return retval;
+}
+
+void
+parse_config_file(pam_handle_t *pamh, int argc, const char **argv,
+ struct options_t *options)
+{
+ const char *fname = NULL;
+ int i;
+ char *val;
+
+ for (i = 0; i < argc; ++i) {
+ const char *str = pam_str_skip_prefix(argv[i], "conf=");
+
+ if (str != NULL) {
+ fname = str;
+ }
+ }
+
+ if (fname == NULL) {
+ fname = PWHISTORY_DEFAULT_CONF;
+ }
+
+ val = pwhistory_search_key (pamh, fname, "debug");
+ if (val != NULL) {
+ options->debug = 1;
+ free(val);
+ }
+
+ val = pwhistory_search_key (pamh, fname, "enforce_for_root");
+ if (val != NULL) {
+ options->enforce_for_root = 1;
+ free(val);
+ }
+
+ val = pwhistory_search_key (pamh, fname, "remember");
+ if (val != NULL) {
+ unsigned int temp;
+ if (sscanf(val, "%u", &temp) != 1) {
+ pam_syslog(pamh, LOG_ERR,
+ "Bad number supplied for remember argument");
+ } else {
+ options->remember = temp;
+ }
+ free(val);
+ }
+
+ val = pwhistory_search_key (pamh, fname, "retry");
+ if (val != NULL) {
+ unsigned int temp;
+ if (sscanf(val, "%u", &temp) != 1) {
+ pam_syslog(pamh, LOG_ERR,
+ "Bad number supplied for retry argument");
+ } else {
+ options->tries = temp;
+ }
+ free(val);
+ }
+
+ val = pwhistory_search_key (pamh, fname, "file");
+ if (val != NULL) {
+ if (*val != '/') {
+ pam_syslog (pamh, LOG_ERR,
+ "File path should be absolute: %s", val);
+ } else {
+ options->filename = val;
+ }
+ }
+}
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.h.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.h
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.h.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.781355775 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory_config.h 2022-09-29 10:13:35.781355775 +0200
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2022 Iker Pedrosa <ipedrosa@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _PWHISTORY_CONFIG_H
+#define _PWHISTORY_CONFIG_H
+
+#include <security/pam_ext.h>
+
+struct options_t {
+ int debug;
+ int enforce_for_root;
+ int remember;
+ int tries;
+ const char *filename;
+};
+typedef struct options_t options_t;
+
+void
+parse_config_file(pam_handle_t *pamh, int argc, const char **argv,
+ struct options_t *options);
+
+#endif /* _PWHISTORY_CONFIG_H */
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.pam-pwhistory-load-conf-from-file Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf
--- Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf.pam-pwhistory-load-conf-from-file 2022-09-29 10:13:35.781355775 +0200
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/pwhistory.conf 2022-09-29 10:13:35.781355775 +0200
@@ -0,0 +1,21 @@
+# Configuration for remembering the last passwords used by a user.
+#
+# Enable the debugging logs.
+# Enabled if option is present.
+# debug
+#
+# root account's passwords are also remembered.
+# Enabled if option is present.
+# enforce_for_root
+#
+# Number of passwords to remember.
+# The default is 10.
+# remember = 10
+#
+# Number of times to prompt for the password.
+# The default is 1.
+# retry = 1
+#
+# The directory where the last passwords are kept.
+# The default is /etc/security/opasswd.
+# file = /etc/security/opasswd

111
SOURCES/pam-1.3.1-pam-userdb-prevent-garbage-characters-from-db.patch
Unescape View File

@ -0,0 +1,111 @@
From a7453aeeb398d6cbb7a709c4e2a1d75905220fff Mon Sep 17 00:00:00 2001
From: Stanislav Zidek <szidek@redhat.com>
Date: Fri, 16 Apr 2021 19:14:18 +0200
Subject: [PATCH] pam_userdb: Prevent garbage characters from db
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1791965
---
modules/pam_userdb/pam_userdb.8.xml | 3 +-
modules/pam_userdb/pam_userdb.c | 56 +++++++++++++++++------------
2 files changed, 36 insertions(+), 23 deletions(-)
diff --git a/modules/pam_userdb/pam_userdb.8.xml b/modules/pam_userdb/pam_userdb.8.xml
index fa628ada..bce92850 100644
--- a/modules/pam_userdb/pam_userdb.8.xml
+++ b/modules/pam_userdb/pam_userdb.8.xml
@@ -100,7 +100,8 @@
</term>
<listitem>
<para>
- Print debug information.
+ Print debug information. Note that password hashes, both from db
+ and computed, will be printed to syslog.
</para>
</listitem>
</varlistentry>
diff --git a/modules/pam_userdb/pam_userdb.c b/modules/pam_userdb/pam_userdb.c
index dc2ca232..d59801bf 100644
--- a/modules/pam_userdb/pam_userdb.c
+++ b/modules/pam_userdb/pam_userdb.c
@@ -194,7 +194,7 @@ user_lookup (pam_handle_t *pamh, const char *database, const char *cryptmode,
}
if (data.dptr != NULL) {
- int compare = 0;
+ int compare = -2;
if (ctrl & PAM_KEY_ONLY_ARG)
{
@@ -209,36 +209,48 @@ user_lookup (pam_handle_t *pamh, const char *database, const char *cryptmode,
char *cryptpw = NULL;
if (data.dsize < 13) {
- compare = -2;
+ /* hash is too short */
+ pam_syslog(pamh, LOG_INFO, "password hash in database is too short");
} else if (ctrl & PAM_ICASE_ARG) {
- compare = -2;
+ pam_syslog(pamh, LOG_INFO,
+ "case-insensitive comparison only works with plaintext passwords");
} else {
+ /* libdb is not guaranteed to produce null terminated strings */
+ char *pwhash = strndup(data.dptr, data.dsize);
+
+ if (pwhash == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "strndup failed: data.dptr");
+ } else {
#ifdef HAVE_CRYPT_R
- struct crypt_data *cdata = NULL;
- cdata = malloc(sizeof(*cdata));
- if (cdata != NULL) {
- cdata->initialized = 0;
- cryptpw = crypt_r(pass, data.dptr, cdata);
- }
+ struct crypt_data *cdata = NULL;
+ cdata = malloc(sizeof(*cdata));
+ if (cdata == NULL) {
+ pam_syslog(pamh, LOG_CRIT, "malloc failed: struct crypt_data");
+ } else {
+ cdata->initialized = 0;
+ cryptpw = crypt_r(pass, pwhash, cdata);
+ }
#else
- cryptpw = crypt (pass, data.dptr);
+ cryptpw = crypt (pass, pwhash);
#endif
- if (cryptpw && strlen(cryptpw) == (size_t)data.dsize) {
- compare = memcmp(data.dptr, cryptpw, data.dsize);
- } else {
- compare = -2;
- if (ctrl & PAM_DEBUG_ARG) {
- if (cryptpw)
- pam_syslog(pamh, LOG_INFO, "lengths of computed and stored hashes differ");
- else
- pam_syslog(pamh, LOG_INFO, "crypt() returned NULL");
+ if (cryptpw && strlen(cryptpw) == (size_t)data.dsize) {
+ compare = memcmp(data.dptr, cryptpw, data.dsize);
+ } else {
+ if (ctrl & PAM_DEBUG_ARG) {
+ if (cryptpw) {
+ pam_syslog(pamh, LOG_INFO, "lengths of computed and stored hashes differ");
+ pam_syslog(pamh, LOG_INFO, "computed hash: %s", cryptpw);
+ } else {
+ pam_syslog(pamh, LOG_ERR, "crypt() returned NULL");
+ }
+ }
}
- }
#ifdef HAVE_CRYPT_R
- free(cdata);
+ free(cdata);
#endif
+ }
+ free(pwhash);
}
-
} else {
/* Unknown password encryption method -
--
2.30.2

75
SOURCES/pam-1.3.1-pam-usertype-SYS_UID_MAX.patch
Unescape View File

@ -0,0 +1,75 @@
diff -up Linux-PAM-1.3.1/configure.ac.pam-usertype-SYS_UID_MAX Linux-PAM-1.3.1/configure.ac
--- Linux-PAM-1.3.1/configure.ac.pam-usertype-SYS_UID_MAX 2022-06-22 16:41:09.169146826 +0200
+++ Linux-PAM-1.3.1/configure.ac 2022-06-22 16:43:54.343373619 +0200
@@ -615,12 +615,6 @@ if test x"$opt_uidmin" == x; then
fi
AC_DEFINE_UNQUOTED(PAM_USERTYPE_UIDMIN, $opt_uidmin, [Minimum regular user uid.])
-AC_ARG_WITH([sysuidmin], AS_HELP_STRING([--with-sysuidmin=<number>],[default value for system user min uid (101)]), opt_sysuidmin=$withval)
-if test x"$opt_sysuidmin" == x; then
- opt_sysuidmin=101
-fi
-AC_DEFINE_UNQUOTED(PAM_USERTYPE_SYSUIDMIN, $opt_sysuidmin, [Minimum system user uid.])
-
AC_ARG_WITH([kerneloverflowuid], AS_HELP_STRING([--with-kernel-overflow-uid=<number>],[kernel overflow uid, default (uint16_t)-2=65534]), opt_kerneloverflowuid=$withval)
if test x"$opt_kerneloverflowuid" == x; then
opt_kerneloverflowuid=65534
diff -up Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml.pam-usertype-SYS_UID_MAX Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml
--- Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml.pam-usertype-SYS_UID_MAX 2022-06-22 16:41:09.155146722 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml 2022-06-22 16:41:09.169146826 +0200
@@ -31,7 +31,7 @@
pam_usertype.so is designed to succeed or fail authentication
based on type of the account of the authenticated user.
The type of the account is decided with help of
- <emphasis>SYS_UID_MIN</emphasis> and <emphasis>SYS_UID_MAX</emphasis>
+ <emphasis>SYS_UID_MAX</emphasis>
settings in <emphasis>/etc/login.defs</emphasis>. One use is to select
whether to load other modules based on this test.
</para>
diff -up Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c.pam-usertype-SYS_UID_MAX Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c
--- Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c.pam-usertype-SYS_UID_MAX 2022-06-22 16:41:09.155146722 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c 2022-06-22 16:41:09.169146826 +0200
@@ -277,7 +277,6 @@ static int
pam_usertype_is_system(pam_handle_t *pamh, uid_t uid)
{
uid_t uid_min;
- uid_t sys_min;
uid_t sys_max;
if (uid == (uid_t)-1) {
@@ -285,21 +284,19 @@ pam_usertype_is_system(pam_handle_t *pam
return PAM_USER_UNKNOWN;
}
- if (uid <= 99) {
- /* Reserved. */
- return PAM_SUCCESS;
- }
-
if (uid == PAM_USERTYPE_OVERFLOW_UID) {
/* nobody */
return PAM_SUCCESS;
}
uid_min = pam_usertype_get_id(pamh, "UID_MIN", PAM_USERTYPE_UIDMIN);
- sys_min = pam_usertype_get_id(pamh, "SYS_UID_MIN", PAM_USERTYPE_SYSUIDMIN);
sys_max = pam_usertype_get_id(pamh, "SYS_UID_MAX", uid_min - 1);
- return uid >= sys_min && uid <= sys_max ? PAM_SUCCESS : PAM_AUTH_ERR;
+ if (uid <= sys_max && uid < uid_min) {
+ return PAM_SUCCESS;
+ }
+
+ return PAM_AUTH_ERR;
}
static int
@@ -336,7 +333,7 @@ pam_usertype_evaluate(struct pam_usertyp
/**
* Arguments:
- * - issystem: uid in <SYS_UID_MIN, SYS_UID_MAX>
+ * - issystem: uid less than SYS_UID_MAX
* - isregular: not issystem
* - use_uid: use user that runs application not that is being authenticate (same as in pam_succeed_if)
* - audit: log unknown users to syslog

712
SOURCES/pam-1.3.1-pam-usertype.patch
Unescape View File

@ -0,0 +1,712 @@
diff -up Linux-PAM-1.3.1/configure.ac.pam-usertype Linux-PAM-1.3.1/configure.ac
--- Linux-PAM-1.3.1/configure.ac.pam-usertype 2020-05-15 10:03:27.247468160 +0200
+++ Linux-PAM-1.3.1/configure.ac 2020-05-15 10:03:27.270468089 +0200
@@ -606,6 +606,27 @@ AC_SUBST([HAVE_KEY_MANAGEMENT], $HAVE_KE
AM_CONDITIONAL([HAVE_KEY_MANAGEMENT], [test "$have_key_syscalls" = 1])
+dnl
+dnl Get values for default uid ranges in login.defs used in pam_usertype
+dnl
+AC_ARG_WITH([uidmin], AS_HELP_STRING([--with-uidmin=<number>],[default value for regular user min uid (1000)]), opt_uidmin=$withval)
+if test x"$opt_uidmin" == x; then
+ opt_uidmin=1000
+fi
+AC_DEFINE_UNQUOTED(PAM_USERTYPE_UIDMIN, $opt_uidmin, [Minimum regular user uid.])
+
+AC_ARG_WITH([sysuidmin], AS_HELP_STRING([--with-sysuidmin=<number>],[default value for system user min uid (101)]), opt_sysuidmin=$withval)
+if test x"$opt_sysuidmin" == x; then
+ opt_sysuidmin=101
+fi
+AC_DEFINE_UNQUOTED(PAM_USERTYPE_SYSUIDMIN, $opt_sysuidmin, [Minimum system user uid.])
+
+AC_ARG_WITH([kerneloverflowuid], AS_HELP_STRING([--with-kernel-overflow-uid=<number>],[kernel overflow uid, default (uint16_t)-2=65534]), opt_kerneloverflowuid=$withval)
+if test x"$opt_kerneloverflowuid" == x; then
+ opt_kerneloverflowuid=65534
+fi
+AC_DEFINE_UNQUOTED(PAM_USERTYPE_OVERFLOW_UID, $opt_kerneloverflowuid, [Kernel overflow uid.])
+
dnl Files to be created from when we run configure
AC_CONFIG_FILES([Makefile libpam/Makefile libpamc/Makefile libpamc/test/Makefile \
libpam_misc/Makefile conf/Makefile conf/pam_conv1/Makefile \
@@ -636,6 +657,7 @@ AC_CONFIG_FILES([Makefile libpam/Makefil
modules/pam_timestamp/Makefile modules/pam_tty_audit/Makefile \
modules/pam_umask/Makefile \
modules/pam_unix/Makefile modules/pam_userdb/Makefile \
+ modules/pam_usertype/Makefile \
modules/pam_warn/Makefile modules/pam_wheel/Makefile \
modules/pam_xauth/Makefile doc/Makefile doc/specs/Makefile \
doc/man/Makefile doc/sag/Makefile doc/adg/Makefile \
diff -up Linux-PAM-1.3.1/modules/Makefile.am.pam-usertype Linux-PAM-1.3.1/modules/Makefile.am
--- Linux-PAM-1.3.1/modules/Makefile.am.pam-usertype 2020-05-15 10:03:27.247468160 +0200
+++ Linux-PAM-1.3.1/modules/Makefile.am 2020-05-15 10:03:27.270468089 +0200
@@ -12,7 +12,7 @@ SUBDIRS = pam_access pam_cracklib pam_de
pam_selinux pam_sepermit pam_shells pam_stress \
pam_succeed_if pam_time pam_timestamp \
pam_tty_audit pam_umask \
- pam_unix pam_userdb pam_warn pam_wheel pam_xauth
+ pam_unix pam_userdb pam_usertype pam_warn pam_wheel pam_xauth
CLEANFILES = *~
diff -up Linux-PAM-1.3.1/modules/pam_usertype/Makefile.am.pam-usertype Linux-PAM-1.3.1/modules/pam_usertype/Makefile.am
--- Linux-PAM-1.3.1/modules/pam_usertype/Makefile.am.pam-usertype 2020-05-15 10:03:27.270468089 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/Makefile.am 2020-05-15 10:03:27.270468089 +0200
@@ -0,0 +1,34 @@
+#
+# Copyright (c) 2005, 2006, 2009 Thorsten Kukuk <kukuk@suse.de>
+# Copyright (c) 2020 Red Hat, Inc.
+#
+
+CLEANFILES = *~
+MAINTAINERCLEANFILES = $(MANS) README
+
+EXTRA_DIST = README ${MANS} ${XMLS} tst-pam_usertype
+
+TESTS = tst-pam_usertype
+
+man_MANS = pam_usertype.8
+
+XMLS = README.xml pam_usertype.8.xml
+
+securelibdir = $(SECUREDIR)
+secureconfdir = $(SCONFIGDIR)
+
+AM_CFLAGS = -I$(top_srcdir)/libpam/include -I$(top_srcdir)/libpamc/include \
+ $(WARN_CFLAGS)
+AM_LDFLAGS = -no-undefined -avoid-version -module
+if HAVE_VERSIONING
+ AM_LDFLAGS += -Wl,--version-script=$(srcdir)/../modules.map
+endif
+
+securelib_LTLIBRARIES = pam_usertype.la
+pam_usertype_la_LIBADD = $(top_builddir)/libpam/libpam.la
+
+if ENABLE_REGENERATE_MAN
+noinst_DATA = README
+README: pam_usertype.8.xml
+-include $(top_srcdir)/Make.xml.rules
+endif
diff -up Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml.pam-usertype Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml
--- Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml.pam-usertype 2020-05-15 10:03:27.270468089 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.8.xml 2020-05-15 10:03:27.270468089 +0200
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding='UTF-8'?>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+ "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
+
+
+<refentry id='pam_usertype'>
+ <refmeta>
+ <refentrytitle>pam_usertype</refentrytitle>
+ <manvolnum>8</manvolnum>
+ <refmiscinfo class='sectdesc'>Linux-PAM</refmiscinfo>
+ </refmeta>
+
+ <refnamediv id='pam_usertype-name'>
+ <refname>pam_usertype</refname>
+ <refpurpose>check if the authenticated user is a system or regular account</refpurpose>
+ </refnamediv>
+
+
+ <refsynopsisdiv>
+ <cmdsynopsis id='pam_usertype-cmdsynopsis'>
+ <command>pam_usertype.so</command>
+ <arg choice='opt' rep='repeat'><replaceable>flag</replaceable></arg>
+ <arg choice='req'><replaceable>condition</replaceable></arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+
+ <refsect1 id='pam_usertype-description'>
+ <title>DESCRIPTION</title>
+ <para>
+ pam_usertype.so is designed to succeed or fail authentication
+ based on type of the account of the authenticated user.
+ The type of the account is decided with help of
+ <emphasis>SYS_UID_MIN</emphasis> and <emphasis>SYS_UID_MAX</emphasis>
+ settings in <emphasis>/etc/login.defs</emphasis>. One use is to select
+ whether to load other modules based on this test.
+ </para>
+
+ <para>
+ The module should be given only one condition as module argument.
+ Authentication will succeed only if the condition is met.
+ </para>
+ </refsect1>
+
+ <refsect1 id="pam_usertype-options">
+ <title>OPTIONS</title>
+ <para>
+ The following <emphasis>flag</emphasis>s are supported:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>use_uid</option></term>
+ <listitem>
+ <para>
+ Evaluate conditions using the account of the user whose UID
+ the application is running under instead of the user being
+ authenticated.
+ </para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>audit</option></term>
+ <listitem>
+ <para>
+ Log unknown users to the system log.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+
+ <para>
+ Available <emphasis>condition</emphasis>s are:
+ </para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>issystem</option></term>
+ <listitem>
+ <para>Succeed if the user is a system user.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><option>isregular</option></term>
+ <listitem>
+ <para>Succeed if the user is a regular user.</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id="pam_usertype-types">
+ <title>MODULE TYPES PROVIDED</title>
+ <para>
+ All module types (<option>account</option>, <option>auth</option>,
+ <option>password</option> and <option>session</option>) are provided.
+ </para>
+ </refsect1>
+
+ <refsect1 id='pam_usertype-return_values'>
+ <title>RETURN VALUES</title>
+ <variablelist>
+
+ <varlistentry>
+ <term>PAM_SUCCESS</term>
+ <listitem>
+ <para>
+ The condition was true.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>PAM_AUTH_ERR</term>
+ <listitem>
+ <para>
+ The condition was false.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>PAM_SERVICE_ERR</term>
+ <listitem>
+ <para>
+ A service error occurred or the arguments can't be
+ parsed correctly.
+ </para>
+ </listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term>PAM_USER_UNKNOWN</term>
+ <listitem>
+ <para>
+ User was not found.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+
+ <refsect1 id='pam_usertype-examples'>
+ <title>EXAMPLES</title>
+ <para>
+ Skip remaining modules if the user is a system user:
+ </para>
+ <programlisting>
+account sufficient pam_usertype.so issystem
+ </programlisting>
+ </refsect1>
+
+ <refsect1 id='pam_usertype-see_also'>
+ <title>SEE ALSO</title>
+ <para>
+ <citerefentry>
+ <refentrytitle>login.defs</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>pam</refentrytitle><manvolnum>8</manvolnum>
+ </citerefentry>
+ </para>
+ </refsect1>
+
+ <refsect1 id='pam_usertype-author'>
+ <title>AUTHOR</title>
+ <para>Pavel Březina &lt;pbrezina@redhat.com&gt;</para>
+ </refsect1>
+</refentry>
diff -up Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c.pam-usertype Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c
--- Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c.pam-usertype 2020-05-15 10:03:27.270468089 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/pam_usertype.c 2020-05-15 10:16:08.053198025 +0200
@@ -0,0 +1,394 @@
+/******************************************************************************
+ * Check user type based on login.defs.
+ *
+ * Copyright (c) 2020 Red Hat, Inc.
+ * Written by Pavel Březina <pbrezina@redhat.com>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * ALTERNATIVELY, this product may be distributed under the terms of
+ * the GNU Public License, in which case the provisions of the GPL are
+ * required INSTEAD OF the above restrictions. (This clause is
+ * necessary due to a potential bad interaction between the GPL and
+ * the restrictions contained in a BSD-style copyright.)
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
+#include <syslog.h>
+#include <unistd.h>
+#include <pwd.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+
+#define PAM_SM_AUTH
+#define PAM_SM_ACCOUNT
+#define PAM_SM_SESSION
+#define PAM_SM_PASSWORD
+
+#include <security/pam_modules.h>
+#include <security/pam_modutil.h>
+#include <security/pam_ext.h>
+
+#define LOGIN_DEFS "/etc/login.defs"
+
+enum pam_usertype_op {
+ OP_IS_SYSTEM,
+ OP_IS_REGULAR,
+
+ OP_SENTINEL
+};
+
+struct pam_usertype_opts {
+ enum pam_usertype_op op;
+ int use_uid;
+ int audit;
+};
+
+static int
+pam_usertype_parse_args(struct pam_usertype_opts *opts,
+ pam_handle_t *pamh,
+ int argc,
+ const char **argv)
+{
+ int i;
+
+ memset(opts, 0, sizeof(struct pam_usertype_opts));
+ opts->op = OP_SENTINEL;
+
+ for (i = 0; i < argc; i++) {
+ if (strcmp(argv[i], "use_uid") == 0) {
+ opts->use_uid = 1;
+ } else if (strcmp(argv[i], "audit") == 0) {
+ opts->audit = 1;
+ } else if (strcmp(argv[i], "issystem") == 0) {
+ opts->op = OP_IS_SYSTEM;
+ } else if (strcmp(argv[i], "isregular") == 0) {
+ opts->op = OP_IS_REGULAR;
+ } else {
+ pam_syslog(pamh, LOG_WARNING, "Unknown argument: %s", argv[i]);
+ /* Just continue. */
+ }
+ }
+
+ if (opts->op == OP_SENTINEL) {
+ pam_syslog(pamh, LOG_ERR, "Operation not specified");
+ return PAM_SERVICE_ERR;
+ }
+
+ return PAM_SUCCESS;
+}
+
+static int
+pam_usertype_get_uid(struct pam_usertype_opts *opts,
+ pam_handle_t *pamh,
+ uid_t *_uid)
+{
+ struct passwd *pwd;
+ const void *prompt;
+ const char *username;
+ int ret;
+
+ /* Get uid of user that runs the application. */
+ if (opts->use_uid) {
+ pwd = pam_modutil_getpwuid(pamh, getuid());
+ if (pwd == NULL) {
+ pam_syslog(pamh, LOG_ERR,
+ "error retrieving information about user %lu",
+ (unsigned long)getuid());
+ return PAM_USER_UNKNOWN;
+ }
+
+ *_uid = pwd->pw_uid;
+ return PAM_SUCCESS;
+ }
+
+ /* Get uid of user that is being authenticated. */
+ ret = pam_get_item(pamh, PAM_USER_PROMPT, &prompt);
+ if (ret != PAM_SUCCESS || prompt == NULL || strlen(prompt) == 0) {
+ prompt = "login: ";
+ }
+
+ ret = pam_get_user(pamh, &username, prompt);
+ if (ret != PAM_SUCCESS || username == NULL) {
+ pam_syslog(pamh, LOG_ERR, "error retrieving user name: %s",
+ pam_strerror(pamh, ret));
+ return ret;
+ }
+
+ pwd = pam_modutil_getpwnam(pamh, username);
+ if (pwd == NULL) {
+ if (opts->audit) {
+ pam_syslog(pamh, LOG_NOTICE,
+ "error retrieving information about user %s", username);
+ }
+
+ return PAM_USER_UNKNOWN;
+ }
+
+ *_uid = pwd->pw_uid;
+
+ return PAM_SUCCESS;
+}
+
+#define MAX_UID_VALUE 0xFFFFFFFFUL
+
+/* lookup a value for key in login.defs file or similar key value format */
+char *
+pam_usertype_search_key(pam_handle_t *pamh UNUSED,
+ const char *file_name,
+ const char *key)
+{
+ FILE *fp;
+ char *buf = NULL;
+ size_t buflen = 0;
+ char *retval = NULL;
+
+ fp = fopen(file_name, "r");
+ if (NULL == fp)
+ return NULL;
+
+ while (!feof(fp)) {
+ char *tmp, *cp;
+#if defined(HAVE_GETLINE)
+ ssize_t n = getline(&buf, &buflen, fp);
+#elif defined (HAVE_GETDELIM)
+ ssize_t n = getdelim(&buf, &buflen, '\n', fp);
+#else
+ ssize_t n;
+
+ if (buf == NULL) {
+ buflen = BUF_SIZE;
+ buf = malloc(buflen);
+ if (buf == NULL) {
+ fclose(fp);
+ return NULL;
+ }
+ }
+ buf[0] = '\0';
+ if (fgets(buf, buflen - 1, fp) == NULL)
+ break;
+ else if (buf != NULL)
+ n = strlen(buf);
+ else
+ n = 0;
+#endif /* HAVE_GETLINE / HAVE_GETDELIM */
+ cp = buf;
+
+ if (n < 1)
+ break;
+ if (cp[n - 1] == '\n')
+ cp[n - 1] = '\0';
+
+ tmp = strchr(cp, '#'); /* remove comments */
+ if (tmp)
+ *tmp = '\0';
+ while (isspace((int)*cp)) /* remove spaces and tabs */
+ ++cp;
+ if (*cp == '\0') /* ignore empty lines */
+ continue;
+
+ tmp = strsep (&cp, " \t=");
+ if (cp != NULL)
+ while (isspace((int)*cp) || *cp == '=')
+ ++cp;
+ else
+ cp = "";
+
+ if (strcasecmp(tmp, key) == 0) {
+ retval = strdup(cp);
+ break;
+ }
+ }
+ fclose(fp);
+
+ free(buf);
+
+ return retval;
+}
+
+static uid_t
+pam_usertype_get_id(pam_handle_t *pamh,
+ const char *key,
+ uid_t default_value)
+{
+ unsigned long ul;
+ char *value;
+ char *ep;
+ uid_t uid;
+
+ value = pam_usertype_search_key(pamh, LOGIN_DEFS, key);
+ if (value == NULL) {
+ return default_value;
+ }
+
+ /* taken from get_lastlog_uid_max() */
+ ep = value + strlen(value);
+ while (ep > value && isspace(*(--ep))) {
+ *ep = '\0';
+ }
+
+ errno = 0;
+ ul = strtoul(value, &ep, 10);
+ if (!(ul >= MAX_UID_VALUE
+ || (uid_t)ul >= MAX_UID_VALUE
+ || (errno != 0 && ul == 0)
+ || value == ep
+ || *ep != '\0')) {
+ uid = (uid_t)ul;
+ } else {
+ uid = default_value;
+ }
+
+ free(value);
+
+ return uid;
+}
+
+static int
+pam_usertype_is_system(pam_handle_t *pamh, uid_t uid)
+{
+ uid_t uid_min;
+ uid_t sys_min;
+ uid_t sys_max;
+
+ if (uid == (uid_t)-1) {
+ pam_syslog(pamh, LOG_WARNING, "invalid uid");
+ return PAM_USER_UNKNOWN;
+ }
+
+ if (uid <= 99) {
+ /* Reserved. */
+ return PAM_SUCCESS;
+ }
+
+ if (uid == PAM_USERTYPE_OVERFLOW_UID) {
+ /* nobody */
+ return PAM_SUCCESS;
+ }
+
+ uid_min = pam_usertype_get_id(pamh, "UID_MIN", PAM_USERTYPE_UIDMIN);
+ sys_min = pam_usertype_get_id(pamh, "SYS_UID_MIN", PAM_USERTYPE_SYSUIDMIN);
+ sys_max = pam_usertype_get_id(pamh, "SYS_UID_MAX", uid_min - 1);
+
+ return uid >= sys_min && uid <= sys_max ? PAM_SUCCESS : PAM_AUTH_ERR;
+}
+
+static int
+pam_usertype_is_regular(pam_handle_t *pamh, uid_t uid)
+{
+ int ret;
+
+ ret = pam_usertype_is_system(pamh, uid);
+ switch (ret) {
+ case PAM_SUCCESS:
+ return PAM_AUTH_ERR;
+ case PAM_USER_UNKNOWN:
+ return PAM_USER_UNKNOWN;
+ default:
+ return PAM_SUCCESS;
+ }
+}
+
+static int
+pam_usertype_evaluate(struct pam_usertype_opts *opts,
+ pam_handle_t *pamh,
+ uid_t uid)
+{
+ switch (opts->op) {
+ case OP_IS_SYSTEM:
+ return pam_usertype_is_system(pamh, uid);
+ case OP_IS_REGULAR:
+ return pam_usertype_is_regular(pamh, uid);
+ default:
+ pam_syslog(pamh, LOG_ERR, "Unknown operation: %d", opts->op);
+ return PAM_SERVICE_ERR;
+ }
+}
+
+/**
+ * Arguments:
+ * - issystem: uid in <SYS_UID_MIN, SYS_UID_MAX>
+ * - isregular: not issystem
+ * - use_uid: use user that runs application not that is being authenticate (same as in pam_succeed_if)
+ * - audit: log unknown users to syslog
+ */
+int
+pam_sm_authenticate(pam_handle_t *pamh, int flags UNUSED,
+ int argc, const char **argv)
+{
+ struct pam_usertype_opts opts;
+ uid_t uid;
+ int ret;
+
+ ret = pam_usertype_parse_args(&opts, pamh, argc, argv);
+ if (ret != PAM_SUCCESS) {
+ return ret;
+ }
+
+ ret = pam_usertype_get_uid(&opts, pamh, &uid);
+ if (ret != PAM_SUCCESS) {
+ return ret;
+ }
+
+ return pam_usertype_evaluate(&opts, pamh, uid);
+}
+
+int
+pam_sm_setcred(pam_handle_t *pamh UNUSED, int flags UNUSED,
+ int argc UNUSED, const char **argv UNUSED)
+{
+ return PAM_IGNORE;
+}
+
+int
+pam_sm_acct_mgmt(pam_handle_t *pamh, int flags, int argc, const char **argv)
+{
+ return pam_sm_authenticate(pamh, flags, argc, argv);
+}
+
+int
+pam_sm_open_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
+{
+ return pam_sm_authenticate(pamh, flags, argc, argv);
+}
+
+int
+pam_sm_close_session(pam_handle_t *pamh, int flags, int argc, const char **argv)
+{
+ return pam_sm_authenticate(pamh, flags, argc, argv);
+}
+
+int
+pam_sm_chauthtok(pam_handle_t *pamh, int flags, int argc, const char **argv)
+{
+ return pam_sm_authenticate(pamh, flags, argc, argv);
+}
diff -up Linux-PAM-1.3.1/modules/pam_usertype/README.xml.pam-usertype Linux-PAM-1.3.1/modules/pam_usertype/README.xml
--- Linux-PAM-1.3.1/modules/pam_usertype/README.xml.pam-usertype 2020-05-15 10:03:27.270468089 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/README.xml 2020-05-15 10:03:27.270468089 +0200
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding='UTF-8'?>
+<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
+"http://www.docbook.org/xml/4.3/docbookx.dtd"
+[
+<!--
+<!ENTITY pamaccess SYSTEM "pam_usertype.8.xml">
+-->
+]>
+
+<article>
+
+ <articleinfo>
+
+ <title>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_usertype.8.xml" xpointer='xpointer(//refnamediv[@id = "pam_usertype-name"]/*)'/>
+ </title>
+
+ </articleinfo>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_usertype.8.xml" xpointer='xpointer(//refsect1[@id = "pam_usertype-description"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_usertype.8.xml" xpointer='xpointer(//refsect1[@id = "pam_usertype-options"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_usertype.8.xml" xpointer='xpointer(//refsect1[@id = "pam_usertype-examples"]/*)'/>
+ </section>
+
+ <section>
+ <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
+ href="pam_usertype.8.xml" xpointer='xpointer(//refsect1[@id = "pam_usertype-author"]/*)'/>
+ </section>
+
+</article>
diff -up Linux-PAM-1.3.1/modules/pam_usertype/tst-pam_usertype.pam-usertype Linux-PAM-1.3.1/modules/pam_usertype/tst-pam_usertype
--- Linux-PAM-1.3.1/modules/pam_usertype/tst-pam_usertype.pam-usertype 2020-05-15 10:03:27.270468089 +0200
+++ Linux-PAM-1.3.1/modules/pam_usertype/tst-pam_usertype 2020-05-15 10:03:27.270468089 +0200
@@ -0,0 +1,2 @@
+#!/bin/sh
+../../tests/tst-dlopen .libs/pam_usertype.so

33
SOURCES/pam-1.3.1-tty-audit-manfix.patch
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@ -0,0 +1,33 @@
From e31dd6c7d0faa7a06d3ebd50a0b6957b9f822d15 Mon Sep 17 00:00:00 2001
From: Tomas Mraz <tmraz@fedoraproject.org>
Date: Wed, 7 Aug 2019 18:13:57 +0200
Subject: [PATCH] pam_tty_audit: Manual page clarification about password
logging
* modules/pam_tty_audit/pam_tty_audit.8.xml: Explanation why passwords
can be sometimes logged even when the option is not set.
---
modules/pam_tty_audit/pam_tty_audit.8.xml | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/modules/pam_tty_audit/pam_tty_audit.8.xml b/modules/pam_tty_audit/pam_tty_audit.8.xml
index 59a3406..e346c68 100644
--- a/modules/pam_tty_audit/pam_tty_audit.8.xml
+++ b/modules/pam_tty_audit/pam_tty_audit.8.xml
@@ -149,6 +149,13 @@
greater than or equal to <replaceable>min_uid</replaceable> will be
matched.
</para>
+ <para>
+ Please note that passwords in some circumstances may be logged by TTY auditing
+ even if the <option>log_passwd</option> is not used. For example, all input to
+ an ssh session will be logged - even if there is a password being typed into
+ some software running at the remote host because only the local TTY state
+ affects the local TTY auditing.
+ </para>
</refsect1>
<refsect1 id='pam_tty_audit-examples'>
--
2.20.1

57
SOURCES/pam-1.3.1-unix-improve-logging.patch
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@ -0,0 +1,57 @@
From a6845905869ccabb5eb802be37241eabec085dc7 Mon Sep 17 00:00:00 2001
From: Tomas Mraz <tmraz@fedoraproject.org>
Date: Mon, 14 Oct 2019 16:52:46 +0200
Subject: [PATCH] pam_unix: Add logging useful for debugging problems
Two messages added about obtaining the username are guarded
by the debug option as these should not be normally
logged - they can be useful for debugging but they do not
indicate any special condition.
The message about authenticating user with blank password is
still just LOG_DEBUG priority but it is logged unconditionally
because it is somewhat extraordinary condition to have an user
with blank password.
* modules/pam_unix/pam_unix_auth.c (pam_sm_authenticate): Replace
D() macro calls which are not enabled on production builds with
regular pam_syslog() calls.
---
modules/pam_unix/pam_unix_auth.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/modules/pam_unix/pam_unix_auth.c b/modules/pam_unix/pam_unix_auth.c
index 681e49d..3fca945 100644
--- a/modules/pam_unix/pam_unix_auth.c
+++ b/modules/pam_unix/pam_unix_auth.c
@@ -130,15 +130,16 @@ pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv)
AUTH_RETURN;
}
if (on(UNIX_DEBUG, ctrl))
- D(("username [%s] obtained", name));
+ pam_syslog(pamh, LOG_DEBUG, "username [%s] obtained", name);
} else {
- D(("trouble reading username"));
if (retval == PAM_CONV_AGAIN) {
D(("pam_get_user/conv() function is not ready yet"));
/* it is safe to resume this function so we translate this
* retval to the value that indicates we're happy to resume.
*/
retval = PAM_INCOMPLETE;
+ } else if (on(UNIX_DEBUG, ctrl)) {
+ pam_syslog(pamh, LOG_DEBUG, "could not obtain username");
}
AUTH_RETURN;
}
@@ -146,7 +147,7 @@ pam_sm_authenticate(pam_handle_t *pamh, int flags, int argc, const char **argv)
/* if this user does not have a password... */
if (_unix_blankpasswd(pamh, ctrl, name)) {
- D(("user '%s' has blank passwd", name));
+ pam_syslog(pamh, LOG_DEBUG, "user [%s] has blank password; authenticated without it", name);
name = NULL;
retval = PAM_SUCCESS;
AUTH_RETURN;
--
2.20.1

134
SOURCES/pam-1.3.1-wheel-pam_ruser-fallback.patch
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@ -0,0 +1,134 @@
From 6bf9b454eb971083f0cce49faa2aa1cde329ff5d Mon Sep 17 00:00:00 2001
From: ikerexxe <ipedrosa@redhat.com>
Date: Wed, 26 Aug 2020 14:44:23 +0200
Subject: [PATCH 1/3] pam_wheel: improve coding style
modules/pam_wheel/pam_wheel.c: improve indentation and explicitly state
condition statements
---
modules/pam_wheel/pam_wheel.c | 36 ++++++++++++++++++-----------------
1 file changed, 19 insertions(+), 17 deletions(-)
diff --git a/modules/pam_wheel/pam_wheel.c b/modules/pam_wheel/pam_wheel.c
index a025ebaf..94cb7d89 100644
--- a/modules/pam_wheel/pam_wheel.c
+++ b/modules/pam_wheel/pam_wheel.c
@@ -130,25 +130,27 @@ perform_check (pam_handle_t *pamh, int ctrl, const char *use_group)
}
if (ctrl & PAM_USE_UID_ARG) {
- tpwd = pam_modutil_getpwuid (pamh, getuid());
- if (!tpwd) {
- if (ctrl & PAM_DEBUG_ARG) {
+ tpwd = pam_modutil_getpwuid (pamh, getuid());
+ if (tpwd == NULL) {
+ if (ctrl & PAM_DEBUG_ARG) {
pam_syslog(pamh, LOG_NOTICE, "who is running me ?!");
- }
- return PAM_SERVICE_ERR;
- }
- fromsu = tpwd->pw_name;
+ }
+ return PAM_SERVICE_ERR;
+ }
+ fromsu = tpwd->pw_name;
} else {
- fromsu = pam_modutil_getlogin(pamh);
- if (fromsu) {
- tpwd = pam_modutil_getpwnam (pamh, fromsu);
- }
- if (!fromsu || !tpwd) {
- if (ctrl & PAM_DEBUG_ARG) {
- pam_syslog(pamh, LOG_NOTICE, "who is running me ?!");
- }
- return PAM_SERVICE_ERR;
- }
+ fromsu = pam_modutil_getlogin(pamh);
+
+ if (fromsu != NULL) {
+ tpwd = pam_modutil_getpwnam (pamh, fromsu);
+ }
+
+ if (fromsu == NULL || tpwd == NULL) {
+ if (ctrl & PAM_DEBUG_ARG) {
+ pam_syslog(pamh, LOG_NOTICE, "who is running me ?!");
+ }
+ return PAM_SERVICE_ERR;
+ }
}
/*
--
2.26.2
From 9091ea1d81e85f49a221b0325d27b22ce69e444a Mon Sep 17 00:00:00 2001
From: ikerexxe <ipedrosa@redhat.com>
Date: Thu, 27 Aug 2020 09:16:15 +0200
Subject: [PATCH 2/3] pam_wheel: if getlogin fails fallback to PAM_RUSER
modules/pam_wheel/pam_wheel.c: if getlogin fails to obtain the real user
ID, then try with PAM_RUSER.
Resolves:
https://bugzilla.redhat.com/show_bug.cgi?id=1866866
---
modules/pam_wheel/pam_wheel.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/modules/pam_wheel/pam_wheel.c b/modules/pam_wheel/pam_wheel.c
index 94cb7d89..7fa3cfa9 100644
--- a/modules/pam_wheel/pam_wheel.c
+++ b/modules/pam_wheel/pam_wheel.c
@@ -141,6 +141,16 @@ perform_check (pam_handle_t *pamh, int ctrl, const char *use_group)
} else {
fromsu = pam_modutil_getlogin(pamh);
+ /* if getlogin fails try a fallback to PAM_RUSER */
+ if (fromsu == NULL) {
+ const char *rhostname;
+
+ retval = pam_get_item(pamh, PAM_RHOST, (const void **)&rhostname);
+ if (retval != PAM_SUCCESS || rhostname == NULL) {
+ retval = pam_get_item(pamh, PAM_RUSER, (const void **)&fromsu);
+ }
+ }
+
if (fromsu != NULL) {
tpwd = pam_modutil_getpwnam (pamh, fromsu);
}
--
2.26.2
From a3a5cbf86083c43026b558e2023f597530626267 Mon Sep 17 00:00:00 2001
From: ikerexxe <ipedrosa@redhat.com>
Date: Wed, 9 Sep 2020 10:32:03 +0200
Subject: [PATCH 3/3] pam_wheel: clarify use_uid option in man page
modules/pam_wheel/pam_wheel.8.xml: indicate that use_uid option uses the
real uid of the calling process.
---
modules/pam_wheel/pam_wheel.8.xml | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/modules/pam_wheel/pam_wheel.8.xml b/modules/pam_wheel/pam_wheel.8.xml
index b32f5e2b..ee8c7d26 100644
--- a/modules/pam_wheel/pam_wheel.8.xml
+++ b/modules/pam_wheel/pam_wheel.8.xml
@@ -122,9 +122,9 @@
</term>
<listitem>
<para>
- The check for wheel membership will be done against
- the current uid instead of the original one (useful when
- jumping with su from one account to another for example).
+ The check will be done against the real uid of the calling process,
+ instead of trying to obtain the user from the login session
+ associated with the terminal in use.
</para>
</listitem>
</varlistentry>
--
2.26.2

37
SOURCES/pam-1.5.1-pam-faillock-avoid-logging-erroneous.patch
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@ -0,0 +1,37 @@
From 10086bc69663fa819277af244eeb5b629a2403b8 Mon Sep 17 00:00:00 2001
From: Deepak Das <ddas@redhat.com>
Date: Mon, 10 Oct 2022 21:21:35 +0530
Subject: [PATCH] pam_faillock: avoid logging an erroneous consecutive login
failure message
* modules/pam_faillock/pam_faillock.c (write_tally): Avoid logging
a consecutive login failure message for the root user in case when
even_deny_root is not set.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2082442
---
modules/pam_faillock/pam_faillock.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/modules/pam_faillock/pam_faillock.c b/modules/pam_faillock/pam_faillock.c
index ddbb90e7..ca1c7035 100644
--- a/modules/pam_faillock/pam_faillock.c
+++ b/modules/pam_faillock/pam_faillock.c
@@ -374,9 +374,11 @@ write_tally(pam_handle_t *pamh, struct options *opts, struct tally_data *tallies
}
close(audit_fd);
#endif
- if (!(opts->flags & FAILLOCK_FLAG_NO_LOG_INFO)) {
- pam_syslog(pamh, LOG_INFO, "Consecutive login failures for user %s account temporarily locked",
- opts->user);
+ if (!(opts->flags & FAILLOCK_FLAG_NO_LOG_INFO) &&
+ ((opts->flags & FAILLOCK_FLAG_DENY_ROOT) || (opts->uid != 0))) {
+ pam_syslog(pamh, LOG_INFO,
+ "Consecutive login failures for user %s account temporarily locked",
+ opts->user);
}
}
--
2.38.1

53
SOURCES/pam-1.5.1-pam-faillock-clarify-missing-user.patch
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@ -0,0 +1,53 @@
From bcbf145ce925934214e48200c27c9ff736452549 Mon Sep 17 00:00:00 2001
From: Deepak Das <ddas@redhat.com>
Date: Mon, 10 Oct 2022 17:55:53 +0530
Subject: [PATCH] pam_faillock: Clarify missing user faillock files after
reboot
* modules/pam_faillock/faillock.conf.5.xml: Adding note related to missing
user specific faillock files after reboot.
* modules/pam_faillock/pam_faillock.8.xml: Adding note related to missing
user specific faillock files after reboot.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2062512
---
modules/pam_faillock/faillock.conf.5.xml | 4 ++++
modules/pam_faillock/pam_faillock.8.xml | 6 ++++++
2 files changed, 10 insertions(+)
diff --git a/modules/pam_faillock/faillock.conf.5.xml b/modules/pam_faillock/faillock.conf.5.xml
index 04a84107..8faa5915 100644
--- a/modules/pam_faillock/faillock.conf.5.xml
+++ b/modules/pam_faillock/faillock.conf.5.xml
@@ -44,6 +44,10 @@
The directory where the user files with the failure records are kept. The
default is <filename>/var/run/faillock</filename>.
</para>
+ <para>
+ Note: These files will disappear after reboot on systems configured with
+ directory <filename>/var/run/faillock</filename> mounted on virtual memory.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
diff --git a/modules/pam_faillock/pam_faillock.8.xml b/modules/pam_faillock/pam_faillock.8.xml
index 79bcbbd0..b7b7b0db 100644
--- a/modules/pam_faillock/pam_faillock.8.xml
+++ b/modules/pam_faillock/pam_faillock.8.xml
@@ -327,6 +327,12 @@ session required pam_selinux.so open
<term><filename>/var/run/faillock/*</filename></term>
<listitem>
<para>the files logging the authentication failures for users</para>
+ <para>
+ Note: These files will disappear after reboot on systems configured with
+ directory <filename>/var/run/faillock</filename> mounted on virtual memory.
+ For persistent storage use the option <emphasis>dir=</emphasis> in
+ file <filename>/etc/security/faillock.conf</filename>.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
--
2.38.1

41
SOURCES/pam-1.5.1-pam-lastlog-check-localtime_r-return-value.patch
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@ -0,0 +1,41 @@
From 40c271164dbcebfc5304d0537a42fb42e6b6803c Mon Sep 17 00:00:00 2001
From: Iker Pedrosa <ipedrosa@redhat.com>
Date: Mon, 26 Sep 2022 12:16:53 +0200
Subject: [PATCH] pam_lastlog: check localtime_r() return value
Check the return value of localtime_r() before calling strftime(). This
function crashes if the argument is NULL.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2012871
Signed-off-by: Iker Pedrosa <ipedrosa@redhat.com>
---
modules/pam_lastlog/pam_lastlog.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/modules/pam_lastlog/pam_lastlog.c b/modules/pam_lastlog/pam_lastlog.c
index abd048df..121e7560 100644
--- a/modules/pam_lastlog/pam_lastlog.c
+++ b/modules/pam_lastlog/pam_lastlog.c
@@ -573,12 +573,12 @@ last_login_failed(pam_handle_t *pamh, int announce, const char *user, time_t llt
time_t lf_time;
lf_time = utuser.ut_tv.tv_sec;
- tm = localtime_r (&lf_time, &tm_buf);
- strftime (the_time, sizeof (the_time),
- /* TRANSLATORS: "strftime options for date of last login" */
- _(" %a %b %e %H:%M:%S %Z %Y"), tm);
-
- date = the_time;
+ if ((tm = localtime_r (&lf_time, &tm_buf)) != NULL) {
+ strftime (the_time, sizeof (the_time),
+ /* TRANSLATORS: "strftime options for date of last login" */
+ _(" %a %b %e %H:%M:%S %Z %Y"), tm);
+ date = the_time;
+ }
}
/* we want & have the host? */
--
2.38.1

4
SOURCES/pamtmp.conf
Unescape View File

@ -0,0 +1,4 @@
d /run/console 0755 root root -
d /run/faillock 0755 root root -
d /run/sepermit 0755 root root -
d /run/motd.d 0755 root root -

18
SOURCES/password-auth.pamd
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@ -0,0 +1,18 @@
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authselect is run.
auth required pam_env.so
auth sufficient pam_unix.so try_first_pass nullok
auth required pam_deny.so
account required pam_unix.so
password requisite pam_pwquality.so try_first_pass local_users_only retry=3 authtok_type=
password sufficient pam_unix.so try_first_pass use_authtok nullok sha512 shadow
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
-session optional pam_systemd.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so

46
SOURCES/postlogin.5
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@ -0,0 +1,46 @@
.TH POSTLOGIN 5 "2010 Dec 22" "Red Hat" "Linux-PAM Manual"
.SH NAME
postlogin \- Common configuration file for PAMified services
.SH SYNOPSIS
.B /etc/pam.d/postlogin
.sp 2
.SH DESCRIPTION
The purpose of this PAM configuration file is to provide a common
place for all PAM modules which should be called after the stack
configured in
.BR system-auth
or the other common PAM configuration files.
.sp
The
.BR postlogin
configuration file is included from all individual service configuration
files that provide login service with shell or file access.
.SH NOTES
The modules in the postlogin configuration file are executed regardless
of the success or failure of the modules in the
.BR system-auth
configuration file.
.SH BUGS
.sp 2
Sometimes it would be useful to be able to skip the postlogin modules in
case the substack of the
.BR system-auth
modules failed. Unfortunately the current Linux-PAM library does not
provide any way how to achieve this.
.SH "SEE ALSO"
pam(8), config-util(5), system-auth(5)
The three
.BR Linux-PAM
Guides, for
.BR "system administrators" ", "
.BR "module developers" ", "
and
.BR "application developers" ". "

8
SOURCES/postlogin.pamd
Unescape View File

@ -0,0 +1,8 @@
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authselect is run.
session optional pam_umask.so silent
session [success=1 default=ignore] pam_succeed_if.so service !~ gdm* service !~ su* quiet
session [default=1] pam_lastlog.so nowtmp showfailed
session optional pam_lastlog.so silent noupdate showfailed

19
SOURCES/smartcard-auth.pamd
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@ -0,0 +1,19 @@
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authselect is run.
auth required pam_env.so
auth [success=done ignore=ignore default=die] pam_pkcs11.so wait_for_card
auth required pam_deny.so
account required pam_unix.so
account sufficient pam_localuser.so
account sufficient pam_succeed_if.so uid < 500 quiet
account required pam_permit.so
password optional pam_pkcs11.so
session optional pam_keyinit.so revoke
session required pam_limits.so
-session optional pam_systemd.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so

58
SOURCES/system-auth.5
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@ -0,0 +1,58 @@
.TH SYSTEM-AUTH 5 "2010 Dec 22" "Red Hat" "Linux-PAM Manual"
.SH NAME
system-auth \- Common configuration file for PAMified services
.SH SYNOPSIS
.B /etc/pam.d/system-auth
.B /etc/pam.d/password-auth
.B /etc/pam.d/fingerprint-auth
.B /etc/pam.d/smartcard-auth
.sp 2
.SH DESCRIPTION
The purpose of these configuration files are to provide a common
interface for all applications and service daemons calling into
the PAM library.
.sp
The
.BR system-auth
configuration file is included from nearly all individual service configuration
files with the help of the
.BR substack
directive.
.sp
The
.BR password-auth
.BR fingerprint-auth
.BR smartcard-auth
configuration files are for applications which handle authentication from
different types of devices via simultaneously running individual conversations
instead of one aggregate conversation.
.SH NOTES
Previously these common configuration files were included with the help
of the
.BR include
directive. This limited the use of the different action types of modules.
With the use of
.BR substack
directive to include these common configuration files this limitation
no longer applies.
.SH BUGS
.sp 2
None known.
.SH "SEE ALSO"
pam(8), config-util(5), postlogin(5)
The three
.BR Linux-PAM
Guides, for
.BR "system administrators" ", "
.BR "module developers" ", "
and
.BR "application developers" ". "

18
SOURCES/system-auth.pamd
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@ -0,0 +1,18 @@
#%PAM-1.0
# This file is auto-generated.
# User changes will be destroyed the next time authselect is run.
auth required pam_env.so
auth sufficient pam_unix.so try_first_pass nullok
auth required pam_deny.so
account required pam_unix.so
password requisite pam_pwquality.so try_first_pass local_users_only retry=3 authtok_type=
password sufficient pam_unix.so try_first_pass use_authtok nullok sha512 shadow
password required pam_deny.so
session optional pam_keyinit.so revoke
session required pam_limits.so
-session optional pam_systemd.so
session [success=1 default=ignore] pam_succeed_if.so service in crond quiet use_uid
session required pam_unix.so

2283
SPECS/pam.spec
View File

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