Richard Shaw
3 years ago
parent
8860a0809f
commit
268050b7f4
@ -0,0 +1,155 @@
|
||||
From 410a6ce5c80dd981c22752da034f2529b5eee844 Mon Sep 17 00:00:00 2001
|
||||
From: sebres <serg.brester@sebres.de>
|
||||
Date: Mon, 21 Jun 2021 17:12:53 +0200
|
||||
Subject: [PATCH] fixed possible RCE vulnerability, unset escape variable
|
||||
(default tilde) stops consider "~" char after new-line as composing escape
|
||||
sequence
|
||||
|
||||
---
|
||||
config/action.d/complain.conf | 2 +-
|
||||
config/action.d/dshield.conf | 2 +-
|
||||
config/action.d/mail-buffered.conf | 8 ++++----
|
||||
config/action.d/mail-whois-lines.conf | 2 +-
|
||||
config/action.d/mail-whois.conf | 6 +++---
|
||||
config/action.d/mail.conf | 6 +++---
|
||||
6 files changed, 13 insertions(+), 13 deletions(-)
|
||||
|
||||
diff --git a/config/action.d/complain.conf b/config/action.d/complain.conf
|
||||
index 3a5f882c9f..4d73b05859 100644
|
||||
--- a/config/action.d/complain.conf
|
||||
+++ b/config/action.d/complain.conf
|
||||
@@ -102,7 +102,7 @@ logpath = /dev/null
|
||||
# Notes.: Your system mail command. Is passed 2 args: subject and recipient
|
||||
# Values: CMD
|
||||
#
|
||||
-mailcmd = mail -s
|
||||
+mailcmd = mail -E 'set escape' -s
|
||||
|
||||
# Option: mailargs
|
||||
# Notes.: Additional arguments to mail command. e.g. for standard Unix mail:
|
||||
diff --git a/config/action.d/dshield.conf b/config/action.d/dshield.conf
|
||||
index c128bef348..3d5a7a53a9 100644
|
||||
--- a/config/action.d/dshield.conf
|
||||
+++ b/config/action.d/dshield.conf
|
||||
@@ -179,7 +179,7 @@ tcpflags =
|
||||
# Notes.: Your system mail command. Is passed 2 args: subject and recipient
|
||||
# Values: CMD
|
||||
#
|
||||
-mailcmd = mail -s
|
||||
+mailcmd = mail -E 'set escape' -s
|
||||
|
||||
# Option: mailargs
|
||||
# Notes.: Additional arguments to mail command. e.g. for standard Unix mail:
|
||||
diff --git a/config/action.d/mail-buffered.conf b/config/action.d/mail-buffered.conf
|
||||
index 325f185b2f..79b841049c 100644
|
||||
--- a/config/action.d/mail-buffered.conf
|
||||
+++ b/config/action.d/mail-buffered.conf
|
||||
@@ -17,7 +17,7 @@ actionstart = printf %%b "Hi,\n
|
||||
The jail <name> has been started successfully.\n
|
||||
Output will be buffered until <lines> lines are available.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actionstop
|
||||
# Notes.: command executed at the stop of jail (or at the end of Fail2Ban)
|
||||
@@ -28,13 +28,13 @@ actionstop = if [ -f <tmpfile> ]; then
|
||||
These hosts have been banned by Fail2Ban.\n
|
||||
`cat <tmpfile>`
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: Summary from <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: Summary from <fq-hostname>" <dest>
|
||||
rm <tmpfile>
|
||||
fi
|
||||
printf %%b "Hi,\n
|
||||
The jail <name> has been stopped.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actioncheck
|
||||
# Notes.: command executed once before each actionban command
|
||||
@@ -55,7 +55,7 @@ actionban = printf %%b "`date`: <ip> (<failures> failures)\n" >> <tmpfile>
|
||||
These hosts have been banned by Fail2Ban.\n
|
||||
`cat <tmpfile>`
|
||||
\nRegards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: Summary" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: Summary" <dest>
|
||||
rm <tmpfile>
|
||||
fi
|
||||
|
||||
diff --git a/config/action.d/mail-whois-lines.conf b/config/action.d/mail-whois-lines.conf
|
||||
index 3a3e56b2c7..d2818cb9b9 100644
|
||||
--- a/config/action.d/mail-whois-lines.conf
|
||||
+++ b/config/action.d/mail-whois-lines.conf
|
||||
@@ -72,7 +72,7 @@ actionunban =
|
||||
# Notes.: Your system mail command. Is passed 2 args: subject and recipient
|
||||
# Values: CMD
|
||||
#
|
||||
-mailcmd = mail -s
|
||||
+mailcmd = mail -E 'set escape' -s
|
||||
|
||||
# Default name of the chain
|
||||
#
|
||||
diff --git a/config/action.d/mail-whois.conf b/config/action.d/mail-whois.conf
|
||||
index 7fea34c40d..ab33b616dc 100644
|
||||
--- a/config/action.d/mail-whois.conf
|
||||
+++ b/config/action.d/mail-whois.conf
|
||||
@@ -20,7 +20,7 @@ norestored = 1
|
||||
actionstart = printf %%b "Hi,\n
|
||||
The jail <name> has been started successfully.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actionstop
|
||||
# Notes.: command executed at the stop of jail (or at the end of Fail2Ban)
|
||||
@@ -29,7 +29,7 @@ actionstart = printf %%b "Hi,\n
|
||||
actionstop = printf %%b "Hi,\n
|
||||
The jail <name> has been stopped.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actioncheck
|
||||
# Notes.: command executed once before each actionban command
|
||||
@@ -49,7 +49,7 @@ actionban = printf %%b "Hi,\n
|
||||
Here is more information about <ip> :\n
|
||||
`%(_whois_command)s`\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: banned <ip> from <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: banned <ip> from <fq-hostname>" <dest>
|
||||
|
||||
# Option: actionunban
|
||||
# Notes.: command executed when unbanning an IP. Take care that the
|
||||
diff --git a/config/action.d/mail.conf b/config/action.d/mail.conf
|
||||
index 5d8c0e154c..f4838ddcb6 100644
|
||||
--- a/config/action.d/mail.conf
|
||||
+++ b/config/action.d/mail.conf
|
||||
@@ -16,7 +16,7 @@ norestored = 1
|
||||
actionstart = printf %%b "Hi,\n
|
||||
The jail <name> has been started successfully.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: started on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actionstop
|
||||
# Notes.: command executed at the stop of jail (or at the end of Fail2Ban)
|
||||
@@ -25,7 +25,7 @@ actionstart = printf %%b "Hi,\n
|
||||
actionstop = printf %%b "Hi,\n
|
||||
The jail <name> has been stopped.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: stopped on <fq-hostname>" <dest>
|
||||
|
||||
# Option: actioncheck
|
||||
# Notes.: command executed once before each actionban command
|
||||
@@ -43,7 +43,7 @@ actionban = printf %%b "Hi,\n
|
||||
The IP <ip> has just been banned by Fail2Ban after
|
||||
<failures> attempts against <name>.\n
|
||||
Regards,\n
|
||||
- Fail2Ban"|mail -s "[Fail2Ban] <name>: banned <ip> from <fq-hostname>" <dest>
|
||||
+ Fail2Ban"|mail -E 'set escape' -s "[Fail2Ban] <name>: banned <ip> from <fq-hostname>" <dest>
|
||||
|
||||
# Option: actionunban
|
||||
# Notes.: command executed when unbanning an IP. Take care that the
|
||||
Loading…
Reference in new issue