commit
41563e453d
GPG Key ID:
D87CBBC16D2E4A72
@ -0,0 +1,158 @@
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diff -up Linux-PAM-1.3.1/modules/pam_access/pam_access.c.access-handle-hostnames Linux-PAM-1.3.1/modules/pam_access/pam_access.c
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--- Linux-PAM-1.3.1/modules/pam_access/pam_access.c.access-handle-hostnames 2024-01-19 16:45:18.319862531 +0100
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+++ Linux-PAM-1.3.1/modules/pam_access/pam_access.c 2024-01-19 16:50:34.239545948 +0100
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@@ -683,7 +683,7 @@ string_match (pam_handle_t *pamh, const
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/*
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* If the token has the magic value "ALL" the match always succeeds.
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* Otherwise, return YES if the token fully matches the string.
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- * "NONE" token matches NULL string.
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+ * "NONE" token matches NULL string.
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*/
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if (strcasecmp(tok, "ALL") == 0) { /* all: always matches */
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@@ -701,7 +701,8 @@ string_match (pam_handle_t *pamh, const
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/* network_netmask_match - match a string against one token
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* where string is a hostname or ip (v4,v6) address and tok
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- * represents either a single ip (v4,v6) address or a network/netmask
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+ * represents either a hostname, a single ip (v4,v6) address
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+ * or a network/netmask
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*/
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static int
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network_netmask_match (pam_handle_t *pamh,
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@@ -710,10 +711,12 @@ network_netmask_match (pam_handle_t *pam
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char *netmask_ptr;
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char netmask_string[MAXHOSTNAMELEN + 1];
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int addr_type;
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+ struct addrinfo *ai = NULL;
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if (item->debug)
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- pam_syslog (pamh, LOG_DEBUG,
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+ pam_syslog (pamh, LOG_DEBUG,
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"network_netmask_match: tok=%s, item=%s", tok, string);
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+
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/* OK, check if tok is of type addr/mask */
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if ((netmask_ptr = strchr(tok, '/')) != NULL)
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{
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@@ -745,52 +748,109 @@ network_netmask_match (pam_handle_t *pam
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netmask_ptr = number_to_netmask(netmask, addr_type,
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netmask_string, MAXHOSTNAMELEN);
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}
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- }
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+
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+ /*
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+ * Construct an addrinfo list from the IP address.
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+ * This should not fail as the input is a correct IP address...
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+ */
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+ if (getaddrinfo (tok, NULL, NULL, &ai) != 0)
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+ {
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+ return NO;
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+ }
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+ }
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else
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- /* NO, then check if it is only an addr */
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- if (isipaddr(tok, NULL, NULL) != YES)
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+ {
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+ /*
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+ * It is either an IP address or a hostname.
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+ * Let getaddrinfo sort everything out
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+ */
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+ if (getaddrinfo (tok, NULL, NULL, &ai) != 0)
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{
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+ if (item->debug)
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+ pam_syslog(pamh, LOG_DEBUG, "cannot resolve hostname \"%s\"", tok);
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+
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return NO;
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}
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+ netmask_ptr = NULL;
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+ }
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if (isipaddr(string, NULL, NULL) != YES)
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{
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- /* Assume network/netmask with a name of a host. */
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struct addrinfo hint;
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+ /* Assume network/netmask with a name of a host. */
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memset (&hint, '\0', sizeof (hint));
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hint.ai_flags = AI_CANONNAME;
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hint.ai_family = AF_UNSPEC;
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if (item->gai_rv != 0)
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+ {
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+ freeaddrinfo(ai);
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return NO;
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+ }
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else if (!item->res &&
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(item->gai_rv = getaddrinfo (string, NULL, &hint, &item->res)) != 0)
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+ {
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+ freeaddrinfo(ai);
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return NO;
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+ }
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else
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{
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struct addrinfo *runp = item->res;
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+ struct addrinfo *runp1;
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while (runp != NULL)
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{
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char buf[INET6_ADDRSTRLEN];
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- inet_ntop (runp->ai_family,
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- runp->ai_family == AF_INET
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- ? (void *) &((struct sockaddr_in *) runp->ai_addr)->sin_addr
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- : (void *) &((struct sockaddr_in6 *) runp->ai_addr)->sin6_addr,
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- buf, sizeof (buf));
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+ if (getnameinfo (runp->ai_addr, runp->ai_addrlen, buf, sizeof (buf), NULL, 0, NI_NUMERICHOST) != 0)
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+ {
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+ freeaddrinfo(ai);
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+ return NO;
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+ }
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- if (are_addresses_equal(buf, tok, netmask_ptr))
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+ for (runp1 = ai; runp1 != NULL; runp1 = runp1->ai_next)
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{
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- return YES;
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+ char buf1[INET6_ADDRSTRLEN];
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+
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+ if (runp->ai_family != runp1->ai_family)
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+ continue;
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+
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+ if (getnameinfo (runp1->ai_addr, runp1->ai_addrlen, buf1, sizeof (buf1), NULL, 0, NI_NUMERICHOST) != 0)
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+ {
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+ freeaddrinfo(ai);
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+ return NO;
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+ }
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+
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+ if (are_addresses_equal (buf, buf1, netmask_ptr))
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+ {
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+ freeaddrinfo(ai);
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+ return YES;
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+ }
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}
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runp = runp->ai_next;
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}
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}
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}
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else
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- return (are_addresses_equal(string, tok, netmask_ptr));
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+ {
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+ struct addrinfo *runp1;
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+
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+ for (runp1 = ai; runp1 != NULL; runp1 = runp1->ai_next)
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+ {
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+ char buf1[INET6_ADDRSTRLEN];
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+
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+ (void) getnameinfo (runp1->ai_addr, runp1->ai_addrlen, buf1, sizeof (buf1), NULL, 0, NI_NUMERICHOST);
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+
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+ if (are_addresses_equal(string, buf1, netmask_ptr))
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+ {
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+ freeaddrinfo(ai);
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+ return YES;
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+ }
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+ }
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+ }
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+
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+ freeaddrinfo(ai);
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return NO;
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}
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@ -0,0 +1,33 @@
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diff -up Linux-PAM-1.3.1/modules/pam_faillock/pam_faillock.c.audit-messages-formatting Linux-PAM-1.3.1/modules/pam_faillock/pam_faillock.c
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--- Linux-PAM-1.3.1/modules/pam_faillock/pam_faillock.c.audit-messages-formatting 2024-03-11 16:21:51.928946604 +0100
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+++ Linux-PAM-1.3.1/modules/pam_faillock/pam_faillock.c 2024-03-11 16:21:51.934946609 +0100
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@@ -334,7 +334,7 @@ check_tally(pam_handle_t *pamh, struct o
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(void)pam_get_item(pamh, PAM_TTY, &tty);
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(void)pam_get_item(pamh, PAM_RHOST, &rhost);
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- snprintf(buf, sizeof(buf), "pam_faillock uid=%u ", opts->uid);
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+ snprintf(buf, sizeof(buf), "op=pam_faillock suid=%u ", opts->uid);
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audit_log_user_message(audit_fd, AUDIT_RESP_ACCT_UNLOCK_TIMED, buf,
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rhost, NULL, tty, 1);
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}
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@@ -450,7 +450,7 @@ write_tally(pam_handle_t *pamh, struct o
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errno == EAFNOSUPPORT))
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return PAM_SYSTEM_ERR;
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- snprintf(buf, sizeof(buf), "pam_faillock uid=%u ", opts->uid);
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+ snprintf(buf, sizeof(buf), "op=pam_faillock suid=%u ", opts->uid);
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audit_log_user_message(audit_fd, AUDIT_ANOM_LOGIN_FAILURES, buf,
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NULL, NULL, NULL, 1);
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diff -up Linux-PAM-1.3.1/modules/pam_selinux/pam_selinux.c.audit-messages-formatting Linux-PAM-1.3.1/modules/pam_selinux/pam_selinux.c
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--- Linux-PAM-1.3.1/modules/pam_selinux/pam_selinux.c.audit-messages-formatting 2024-03-11 16:21:51.934946609 +0100
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+++ Linux-PAM-1.3.1/modules/pam_selinux/pam_selinux.c 2024-03-11 16:23:24.521025061 +0100
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@@ -106,7 +106,7 @@ int send_audit_message(pam_handle_t *pam
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pam_syslog(pamh, LOG_ERR, "Error translating selected context.");
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selected_raw = NULL;
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}
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- if (asprintf(&msg, "pam: default-context=%s selected-context=%s",
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+ if (asprintf(&msg, "op=pam_selinux default-context=%s selected-context=%s",
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default_raw ? default_raw : (default_context ? default_context : "?"),
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selected_raw ? selected_raw : (selected_context ? selected_context : "?")) < 0) {
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pam_syslog(pamh, LOG_ERR, "Error allocating memory.");
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@ -0,0 +1,13 @@
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diff -up Linux-PAM-1.3.1/modules/pam_faillock/faillock.c.faillock-create-tallydir Linux-PAM-1.3.1/modules/pam_faillock/faillock.c
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--- Linux-PAM-1.3.1/modules/pam_faillock/faillock.c.faillock-create-tallydir 2024-01-08 11:32:02.122392119 +0100
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+++ Linux-PAM-1.3.1/modules/pam_faillock/faillock.c 2024-01-08 11:33:10.916515943 +0100
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@@ -74,6 +74,9 @@ open_tally (const char *dir, const char
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if (create) {
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flags |= O_CREAT;
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+ if (access(dir, F_OK) != 0) {
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+ mkdir(dir, 0755);
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+ }
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}
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fd = open(path, flags, 0600);
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@ -0,0 +1,58 @@
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From 031bb5a5d0d950253b68138b498dc93be69a64cb Mon Sep 17 00:00:00 2001
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From: Matthias Gerstner <matthias.gerstner@suse.de>
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Date: Wed, 27 Dec 2023 14:01:59 +0100
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Subject: [PATCH] pam_namespace: protect_dir(): use O_DIRECTORY to prevent
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local DoS situations
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Without O_DIRECTORY the path crawling logic is subject to e.g. FIFOs
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being placed in user controlled directories, causing the PAM module to
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block indefinitely during `openat()`.
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Pass O_DIRECTORY to cause the `openat()` to fail if the path does not
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refer to a directory.
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With this the check whether the final path element is a directory
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becomes unnecessary, drop it.
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---
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modules/pam_namespace/pam_namespace.c | 18 +-----------------
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1 file changed, 1 insertion(+), 17 deletions(-)
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diff --git a/modules/pam_namespace/pam_namespace.c b/modules/pam_namespace/pam_namespace.c
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index 2528cff8..f72d6718 100644
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--- a/modules/pam_namespace/pam_namespace.c
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+++ b/modules/pam_namespace/pam_namespace.c
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@@ -1201,7 +1201,7 @@ static int protect_dir(const char *path, mode_t mode, int do_mkdir,
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int dfd = AT_FDCWD;
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int dfd_next;
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int save_errno;
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- int flags = O_RDONLY;
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+ int flags = O_RDONLY | O_DIRECTORY;
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int rv = -1;
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struct stat st;
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|
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@@ -1255,22 +1255,6 @@ static int protect_dir(const char *path, mode_t mode, int do_mkdir,
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rv = openat(dfd, dir, flags);
|
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}
|
||||
|
||||
- if (rv != -1) {
|
||||
- if (fstat(rv, &st) != 0) {
|
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- save_errno = errno;
|
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- close(rv);
|
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- rv = -1;
|
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- errno = save_errno;
|
||||
- goto error;
|
||||
- }
|
||||
- if (!S_ISDIR(st.st_mode)) {
|
||||
- close(rv);
|
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- errno = ENOTDIR;
|
||||
- rv = -1;
|
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- goto error;
|
||||
- }
|
||||
- }
|
||||
-
|
||||
if (flags & O_NOFOLLOW) {
|
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/* we are inside user-owned dir - protect */
|
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if (protect_mount(rv, p, idata) == -1) {
|
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--
|
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2.43.0
|
||||
|
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@ -0,0 +1,12 @@
|
||||
diff -up Linux-PAM-1.3.1/modules/pam_unix/pam_unix_passwd.c.unix-default-rounds Linux-PAM-1.3.1/modules/pam_unix/pam_unix_passwd.c
|
||||
--- Linux-PAM-1.3.1/modules/pam_unix/pam_unix_passwd.c.unix-default-rounds 2023-11-02 09:59:54.533238124 +0100
|
||||
+++ Linux-PAM-1.3.1/modules/pam_unix/pam_unix_passwd.c 2023-11-02 10:40:58.017404936 +0100
|
||||
@@ -607,7 +607,7 @@ pam_sm_chauthtok(pam_handle_t *pamh, int
|
||||
unsigned int ctrl, lctrl;
|
||||
int retval;
|
||||
int remember = -1;
|
||||
- int rounds = -1;
|
||||
+ int rounds = 0;
|
||||
int pass_min_len = 0;
|
||||
|
||||
/* <DO NOT free() THESE> */
|
||||
@ -0,0 +1,174 @@
|
||||
From f7abb8c1ef3aa31e6c2564a8aaf69683a77c2016 Mon Sep 17 00:00:00 2001
|
||||
From: =?UTF-8?q?Bj=C3=B6rn=20Esser?= <besser82@fedoraproject.org>
|
||||
Date: Thu, 15 Nov 2018 15:01:57 +0100
|
||||
Subject: [PATCH] pam_unix: Use bcrypt b-variant for computing new hashes.
|
||||
|
||||
Bcrypt hashes used the "$2a$" prefix since 1997.
|
||||
However, in 2011 an implementation bug was discovered in bcrypt
|
||||
affecting the handling of characters in passphrases with the 8th
|
||||
bit set.
|
||||
|
||||
Besides fixing the bug, OpenBSD 5.5 introduced the "$2b$" prefix
|
||||
for a behavior that exactly matches crypt_blowfish's "$2y$", and
|
||||
the crypt_blowfish implementation supports it as well since v1.1.
|
||||
|
||||
That said new computed bcrypt hashes should use the "$2b$" prefix.
|
||||
|
||||
* modules/pam_unix/passverify.c: Use bcrypt b-variant.
|
||||
---
|
||||
modules/pam_unix/passverify.c | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
diff --git a/modules/pam_unix/passverify.c b/modules/pam_unix/passverify.c
|
||||
index 9c1771e2..1f433b3a 100644
|
||||
--- a/modules/pam_unix/passverify.c
|
||||
+++ b/modules/pam_unix/passverify.c
|
||||
@@ -385,7 +385,7 @@ PAMH_ARG_DECL(char * create_password_hash,
|
||||
/* algoid = "$1" */
|
||||
return crypt_md5_wrapper(password);
|
||||
} else if (on(UNIX_BLOWFISH_PASS, ctrl)) {
|
||||
- algoid = "$2a$";
|
||||
+ algoid = "$2b$";
|
||||
} else if (on(UNIX_SHA256_PASS, ctrl)) {
|
||||
algoid = "$5$";
|
||||
} else if (on(UNIX_SHA512_PASS, ctrl)) {
|
||||
--
|
||||
2.41.0
|
||||
|
||||
diff -up Linux-PAM-1.3.1/configure.ac.legacy-xcrypt Linux-PAM-1.3.1/configure.ac
|
||||
--- Linux-PAM-1.3.1/configure.ac.legacy-xcrypt 2023-10-26 12:08:46.896437225 +0200
|
||||
+++ Linux-PAM-1.3.1/configure.ac 2023-10-26 12:10:38.289654696 +0200
|
||||
@@ -395,19 +395,32 @@ AC_SUBST(LIBAUDIT)
|
||||
AM_CONDITIONAL([HAVE_AUDIT_TTY_STATUS],
|
||||
[test "x$HAVE_AUDIT_TTY_STATUS" = xyes])
|
||||
|
||||
-AC_CHECK_HEADERS(xcrypt.h crypt.h)
|
||||
-AS_IF([test "x$ac_cv_header_xcrypt_h" = "xyes"],
|
||||
- [crypt_libs="xcrypt crypt"],
|
||||
- [crypt_libs="crypt"])
|
||||
+AC_CHECK_HEADERS(crypt.h)
|
||||
|
||||
BACKUP_LIBS=$LIBS
|
||||
-AC_SEARCH_LIBS([crypt],[$crypt_libs], LIBCRYPT="${ac_lib:+-l$ac_lib}", LIBCRYPT="")
|
||||
-AC_CHECK_FUNCS(crypt_r crypt_gensalt_r)
|
||||
+LIBCRYPT=""
|
||||
+PKG_CHECK_MODULES([CRYPT], [libcrypt], [
|
||||
+ CFLAGS="$CFLAGS $CRYPT_CFLAGS"
|
||||
+ CPPFLAGS="$CPPFLAGS $CRYPT_CFLAGS"
|
||||
+ LIBS="$LIBS $CRYPT_LIBS"
|
||||
+ LIBCRYPT="$CRYPT_LIBS"
|
||||
+], [
|
||||
+ AC_SEARCH_LIBS([crypt_gensalt_rn],[crypt])
|
||||
+ case "$ac_cv_search_crypt_gensalt_rn" in
|
||||
+ -l*) LIBCRYPT="$ac_cv_search_crypt_gensalt_rn" ;;
|
||||
+ no) AC_SEARCH_LIBS([crypt_r],[crypt])
|
||||
+ case "$ac_cv_search_crypt_r" in
|
||||
+ -l*) LIBCRYPT="$ac_cv_search_crypt_r" ;;
|
||||
+ no ) AC_SEARCH_LIBS([crypt],[crypt])
|
||||
+ case "$ac_cv_search_crypt" in
|
||||
+ -l*) LIBCRYPT="$ac_cv_search_crypt" ;;
|
||||
+ esac ;;
|
||||
+ esac ;;
|
||||
+ esac
|
||||
+])
|
||||
+AC_CHECK_FUNCS([crypt_r])
|
||||
LIBS=$BACKUP_LIBS
|
||||
AC_SUBST(LIBCRYPT)
|
||||
-if test "$LIBCRYPT" = "-lxcrypt" -a "$ac_cv_header_xcrypt_h" = "yes" ; then
|
||||
- AC_DEFINE([HAVE_LIBXCRYPT], 1, [Define to 1 if xcrypt support should be compiled in.])
|
||||
-fi
|
||||
|
||||
AC_ARG_WITH([randomdev], AS_HELP_STRING([--with-randomdev=(<path>|yes|no)],[use specified random device instead of /dev/urandom or 'no' to disable]), opt_randomdev=$withval)
|
||||
if test "$opt_randomdev" = yes -o -z "$opt_randomdev"; then
|
||||
diff -up Linux-PAM-1.3.1/modules/pam_pwhistory/opasswd.c.legacy-xcrypt Linux-PAM-1.3.1/modules/pam_pwhistory/opasswd.c
|
||||
--- Linux-PAM-1.3.1/modules/pam_pwhistory/opasswd.c.legacy-xcrypt 2023-10-26 12:08:46.896437225 +0200
|
||||
+++ Linux-PAM-1.3.1/modules/pam_pwhistory/opasswd.c 2023-10-26 12:11:14.437725259 +0200
|
||||
@@ -52,9 +52,7 @@
|
||||
#include <stdarg.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
-#if defined (HAVE_XCRYPT_H)
|
||||
-#include <xcrypt.h>
|
||||
-#elif defined (HAVE_CRYPT_H)
|
||||
+#ifdef HAVE_CRYPT_H
|
||||
#include <crypt.h>
|
||||
#endif
|
||||
|
||||
diff -up Linux-PAM-1.3.1/modules/pam_unix/bigcrypt.c.legacy-xcrypt Linux-PAM-1.3.1/modules/pam_unix/bigcrypt.c
|
||||
--- Linux-PAM-1.3.1/modules/pam_unix/bigcrypt.c.legacy-xcrypt 2017-02-10 11:10:15.000000000 +0100
|
||||
+++ Linux-PAM-1.3.1/modules/pam_unix/bigcrypt.c 2023-10-26 12:08:46.896437225 +0200
|
||||
@@ -29,9 +29,7 @@
|
||||
#include <string.h>
|
||||
#include <stdlib.h>
|
||||
#include <security/_pam_macros.h>
|
||||
-#ifdef HAVE_LIBXCRYPT
|
||||
-#include <xcrypt.h>
|
||||
-#elif defined(HAVE_CRYPT_H)
|
||||
+#ifdef HAVE_CRYPT_H
|
||||
#include <crypt.h>
|
||||
#endif
|
||||
|
||||
diff -up Linux-PAM-1.3.1/modules/pam_unix/passverify.c.legacy-xcrypt Linux-PAM-1.3.1/modules/pam_unix/passverify.c
|
||||
--- Linux-PAM-1.3.1/modules/pam_unix/passverify.c.legacy-xcrypt 2023-10-26 12:08:46.895437223 +0200
|
||||
+++ Linux-PAM-1.3.1/modules/pam_unix/passverify.c 2023-10-26 12:16:25.470320408 +0200
|
||||
@@ -19,9 +19,7 @@
|
||||
#include <sys/time.h>
|
||||
#include <sys/stat.h>
|
||||
#include <fcntl.h>
|
||||
-#ifdef HAVE_LIBXCRYPT
|
||||
-#include <xcrypt.h>
|
||||
-#elif defined(HAVE_CRYPT_H)
|
||||
+#ifdef HAVE_CRYPT_H
|
||||
#include <crypt.h>
|
||||
#endif
|
||||
|
||||
@@ -406,23 +404,19 @@ PAMH_ARG_DECL(char * create_password_has
|
||||
return crypted;
|
||||
}
|
||||
|
||||
-#ifdef HAVE_CRYPT_GENSALT_R
|
||||
- if (on(UNIX_BLOWFISH_PASS, ctrl)) {
|
||||
- char entropy[17];
|
||||
- crypt_make_salt(entropy, sizeof(entropy) - 1);
|
||||
- sp = crypt_gensalt_r (algoid, rounds,
|
||||
- entropy, sizeof(entropy),
|
||||
- salt, sizeof(salt));
|
||||
- } else {
|
||||
-#endif
|
||||
- sp = stpcpy(salt, algoid);
|
||||
- if (on(UNIX_ALGO_ROUNDS, ctrl)) {
|
||||
- sp += snprintf(sp, sizeof(salt) - (16 + 1 + (sp - salt)), "rounds=%u$", rounds);
|
||||
- }
|
||||
- crypt_make_salt(sp, 16);
|
||||
-#ifdef HAVE_CRYPT_GENSALT_R
|
||||
+#if defined(CRYPT_GENSALT_IMPLEMENTS_AUTO_ENTROPY) && CRYPT_GENSALT_IMPLEMENTS_AUTO_ENTROPY
|
||||
+ /*
|
||||
+ * Any version of libcrypt supporting auto entropy is
|
||||
+ * guaranteed to have crypt_gensalt_rn().
|
||||
+ */
|
||||
+ sp = crypt_gensalt_rn(algoid, rounds, NULL, 0, salt, sizeof(salt));
|
||||
+#else
|
||||
+ sp = stpcpy(salt, algoid);
|
||||
+ if (on(UNIX_ALGO_ROUNDS, ctrl)) {
|
||||
+ sp += snprintf(sp, sizeof(salt) - (16 + 1 + (sp - salt)), "rounds=%u$", rounds);
|
||||
}
|
||||
-#endif
|
||||
+ crypt_make_salt(sp, 16);
|
||||
+#endif /* CRYPT_GENSALT_IMPLEMENTS_AUTO_ENTROPY */
|
||||
#ifdef HAVE_CRYPT_R
|
||||
sp = NULL;
|
||||
cdata = malloc(sizeof(*cdata));
|
||||
diff -up Linux-PAM-1.3.1/modules/pam_userdb/pam_userdb.c.legacy-xcrypt Linux-PAM-1.3.1/modules/pam_userdb/pam_userdb.c
|
||||
--- Linux-PAM-1.3.1/modules/pam_userdb/pam_userdb.c.legacy-xcrypt 2023-10-26 12:08:46.880437194 +0200
|
||||
+++ Linux-PAM-1.3.1/modules/pam_userdb/pam_userdb.c 2023-10-26 12:08:46.896437225 +0200
|
||||
@@ -17,9 +17,7 @@
|
||||
#include <sys/stat.h>
|
||||
#include <fcntl.h>
|
||||
#include <errno.h>
|
||||
-#ifdef HAVE_LIBXCRYPT
|
||||
-#include <xcrypt.h>
|
||||
-#elif defined(HAVE_CRYPT_H)
|
||||
+#ifdef HAVE_CRYPT_H
|
||||
#include <crypt.h>
|
||||
#endif
|
||||
|
||||
Loading…
Reference in new issue