Merge branch 'upstream-0.8' into upstream

* upstream-0.8: BF: proftpd filter -- if login failed -- count regardless of the reason for failure BF: Allow for trailing spaces in proftpd logs BF: escaping () in pure-ftpd filter. Thanks Teodor BF: allow space in the trailing of failregex for sasl.conf: see http://bugs.debian.org/573314 ENH: add <chain> to action.d/iptables*. Thanks Matthijs Kooijman: see http://bugs.debian.org/515599 NF: Adding found on a drive filter.d/dovecot.conf ENH: make filter.d/apache-overflows.conf catch more: see http://bugs.debian.org/574182 ENH: dropbear filter: see http://bugs.debian.org/546913 BF: Use /var/run/fail2ban instead of /tmp for temp files in actions: see http://bugs.debian.org/544232
2011-03-23 16:51:16 -04:00 · 2011-03-23 16:51:16 -04:00 · 93d1583bb9
parent 2394a465fa eab9af9caa
commit 93d1583bb9
15 changed files with 127 additions and 26 deletions
--- a/config/action.d/dshield.conf
+++ b/config/action.d/dshield.conf
@ -206,5 +206,5 @@ dest = reports@dshield.org
 # Notes.:  Base name of temporary files used for buffering
 # Values:  [ STRING ]  Default: /tmp/fail2ban-dshield
 #
-tmpfile = /tmp/fail2ban-dshield
+tmpfile = /var/run/fail2ban/tmp-dshield

--- a/config/action.d/iptables-allports.conf
+++ b/config/action.d/iptables-allports.conf
@ -15,13 +15,13 @@
 #
 actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
-              iptables -I INPUT -p <protocol> -j fail2ban-<name>
+              iptables -I <chain> -p <protocol> -j fail2ban-<name>

 # Option:  actionstop
 # Notes.:  command executed once at the end of Fail2Ban
 # Values:  CMD
 #
-actionstop = iptables -D INPUT -p <protocol> -j fail2ban-<name>
+actionstop = iptables -D <chain> -p <protocol> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -X fail2ban-<name>

@ -29,7 +29,7 @@ actionstop = iptables -D INPUT -p <protocol> -j fail2ban-<name>
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L INPUT | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>

 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
@ -63,3 +63,8 @@ name = default
 #
 protocol = tcp

+# Option:  chain
+# Notes    specifies the iptables chain to which the fail2ban rules should be
+#          added
+# Values:  STRING  Default: INPUT
+chain = INPUT
--- a/config/action.d/iptables-multiport-log.conf
+++ b/config/action.d/iptables-multiport-log.conf
@ -5,7 +5,7 @@
 #
 # make "fail2ban-<name>" chain to match drop IP
 # make "fail2ban-<name>-log" chain to log and drop
-# insert a jump to fail2ban-<name> from -I INPUT if proto/port match
+# insert a jump to fail2ban-<name> from -I <chain> if proto/port match
 #
 # $Revision: 668 $
 #
@ -18,7 +18,7 @@
 #
 actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
-              iptables -I INPUT 1 -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
+              iptables -I <chain> 1 -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
              iptables -N fail2ban-<name>-log
              iptables -I fail2ban-<name>-log -j LOG --log-prefix "$(expr fail2ban-<name> : '\(.\{1,23\}\)'):DROP " --log-level warning -m limit --limit 6/m --limit-burst 2
              iptables -A fail2ban-<name>-log -j DROP
@ -27,7 +27,7 @@ actionstart = iptables -N fail2ban-<name>
 # Notes.:  command executed once at the end of Fail2Ban
 # Values:  CMD
 #
-actionstop = iptables -D INPUT -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
+actionstop = iptables -D <chain> -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -F fail2ban-<name>-log
             iptables -X fail2ban-<name>
@ -76,3 +76,9 @@ port = ssh
 # Values:  [ tcp | udp | icmp | all ] Default: tcp
 #
 protocol = tcp
+
+# Option:  chain
+# Notes    specifies the iptables chain to which the fail2ban rules should be
+#          added
+# Values:  STRING  Default: INPUT
+chain = INPUT
--- a/config/action.d/iptables-multiport.conf
+++ b/config/action.d/iptables-multiport.conf
@ -13,13 +13,13 @@
 #
 actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
-              iptables -I INPUT -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
+              iptables -I <chain> -p <protocol> -m multiport --dports <port> -j fail2ban-<name>

 # Option:  actionstop
 # Notes.:  command executed once at the end of Fail2Ban
 # Values:  CMD
 #
-actionstop = iptables -D INPUT -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
+actionstop = iptables -D <chain> -p <protocol> -m multiport --dports <port> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -X fail2ban-<name>

@ -27,7 +27,7 @@ actionstop = iptables -D INPUT -p <protocol> -m multiport --dports <port> -j fai
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L INPUT | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>

 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
@ -67,3 +67,8 @@ port = ssh
 #
 protocol = tcp

+# Option:  chain
+# Notes    specifies the iptables chain to which the fail2ban rules should be
+#          added
+# Values:  STRING  Default: INPUT
+chain = INPUT
--- a/config/action.d/iptables-new.conf
+++ b/config/action.d/iptables-new.conf
@ -15,13 +15,13 @@
 #
 actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
-              iptables -I INPUT -m state --state NEW -p <protocol> --dport <port> -j fail2ban-<name>
+              iptables -I <chain> -m state --state NEW -p <protocol> --dport <port> -j fail2ban-<name>

 # Option:  actionstop
 # Notes.:  command executed once at the end of Fail2Ban
 # Values:  CMD
 #
-actionstop = iptables -D INPUT -m state --state NEW -p <protocol> --dport <port> -j fail2ban-<name>
+actionstop = iptables -D <chain> -m state --state NEW -p <protocol> --dport <port> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -X fail2ban-<name>

@ -29,7 +29,7 @@ actionstop = iptables -D INPUT -m state --state NEW -p <protocol> --dport <port>
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L INPUT | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>

 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
@ -69,3 +69,8 @@ port = ssh
 #
 protocol = tcp

+# Option:  chain
+# Notes    specifies the iptables chain to which the fail2ban rules should be
+#          added
+# Values:  STRING  Default: INPUT
+chain = INPUT
--- a/config/action.d/iptables.conf
+++ b/config/action.d/iptables.conf
@ -13,13 +13,13 @@
 #
 actionstart = iptables -N fail2ban-<name>
              iptables -A fail2ban-<name> -j RETURN
-              iptables -I INPUT -p <protocol> --dport <port> -j fail2ban-<name>
+              iptables -I <chain> -p <protocol> --dport <port> -j fail2ban-<name>

 # Option:  actionstop
 # Notes.:  command executed once at the end of Fail2Ban
 # Values:  CMD
 #
-actionstop = iptables -D INPUT -p <protocol> --dport <port> -j fail2ban-<name>
+actionstop = iptables -D <chain> -p <protocol> --dport <port> -j fail2ban-<name>
             iptables -F fail2ban-<name>
             iptables -X fail2ban-<name>

@ -27,7 +27,7 @@ actionstop = iptables -D INPUT -p <protocol> --dport <port> -j fail2ban-<name>
 # Notes.:  command executed once before each actionban command
 # Values:  CMD
 #
-actioncheck = iptables -n -L INPUT | grep -q fail2ban-<name>
+actioncheck = iptables -n -L <chain> | grep -q fail2ban-<name>

 # Option:  actionban
 # Notes.:  command executed when banning an IP. Take care that the
@ -67,3 +67,8 @@ port = ssh
 #
 protocol = tcp

+# Option:  chain
+# Notes    specifies the iptables chain to which the fail2ban rules should be
+#          added
+# Values:  STRING  Default: INPUT
+chain = INPUT
--- a/config/action.d/mail-buffered.conf
+++ b/config/action.d/mail-buffered.conf
@ -81,7 +81,7 @@ lines = 5

 # Default temporary file
 #
-tmpfile = /tmp/fail2ban-mail.txt
+tmpfile = /var/run/fail2ban/tmp-mail.txt

 # Destination/Addressee of the mail
 #
--- a/config/action.d/mynetwatchman.conf
+++ b/config/action.d/mynetwatchman.conf
@ -141,4 +141,4 @@ mnwurl = http://mynetwatchman.com/insertwebreport.asp
 # Notes.:  Base name of temporary files
 # Values:  [ STRING ]  Default: /tmp/fail2ban-mynetwatchman
 #
-tmpfile = /tmp/fail2ban-mynetwatchman
+tmpfile = /var/run/fail2ban/tmp-mynetwatchman
--- a/config/action.d/sendmail-buffered.conf
+++ b/config/action.d/sendmail-buffered.conf
@ -101,5 +101,5 @@ lines = 5

 # Default temporary file
 #
-tmpfile = /tmp/fail2ban-mail.txt
+tmpfile = /var/run/fail2ban/tmp-mail.txt

--- a/config/filter.d/apache-overflows.conf
+++ b/config/filter.d/apache-overflows.conf
@ -11,7 +11,7 @@
 # Notes.:  Regexp to catch Apache overflow attempts.
 # Values:  TEXT
 #
-failregex = [[]client <HOST>[]] (Invalid method in request|request failed: URI too long|erroneous characters after protocol string)
+failregex = [[]client <HOST>[]] (Invalid (method|URI) in request|request failed: URI too long|erroneous characters after protocol string)

 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.
--- a/config/filter.d/dovecot.conf
+++ b/config/filter.d/dovecot.conf
@ -0,0 +1,23 @@
+# Fail2Ban configuration file for dovcot
+#
+# Author: 
+#
+# $Revision: $
+#
+
+[Definition]
+
+# Option:  failregex
+# Notes.:  regex to match the password failures messages in the logfile. The
+#          host must be matched by a group named "host". The tag "<HOST>" can
+#          be used for standard IP/hostname matching and is only an alias for
+#          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
+# Values:  TEXT
+#
+failregex = .*(?: pop3-login|imap-login):.*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*rip=(?P<host>\S*),.*
+
+# Option:  ignoreregex
+# Notes.:  regex to ignore. If this regex matches, the line is ignored.
+# Values:  TEXT
+#
+ignoreregex = 
--- a/config/filter.d/dropbear.conf
+++ b/config/filter.d/dropbear.conf
@ -0,0 +1,52 @@
+# Fail2Ban configuration file
+#
+# Author: Francis Russell
+#         Zak B. Elep
+#
+# $Revision$
+#
+# More information: http://bugs.debian.org/546913
+
+[INCLUDES]
+
+# Read common prefixes. If any customizations available -- read them from
+# common.local
+before = common.conf
+
+
+[Definition]
+
+_daemon = dropbear
+
+# Option:  failregex
+# Notes.:  regex to match the password failures messages in the logfile. The
+#          host must be matched by a group named "host". The tag "<HOST>" can
+#          be used for standard IP/hostname matching and is only an alias for
+#          (?:::f{4,6}:)?(?P<host>\S+)
+# Values:  TEXT
+
+# These match the unmodified dropbear messages. It isn't possible to
+# match the source of the 'exit before auth' messages from dropbear.
+#
+failregex = ^%(__prefix_line)slogin attempt for nonexistent user ('.*' )?from <HOST>:.*\s*$
+            ^%(__prefix_line)sbad password attempt for .+ from <HOST>:.*\s*$
+
+# The only line we need to match with the modified dropbear.
+
+# NOTE: The failregex below is ONLY intended to work with a patched
+# version of Dropbear as described here:
+# http://www.unchartedbackwaters.co.uk/pyblosxom/static/patches
+#
+# The standard Dropbear output doesn't provide enough information to
+# ban all types of attack.  The Dropbear patch adds IP address
+# information to the 'exit before auth' message which is always
+# produced for any form of non-successful login. It is that message
+# which this file matches.
+
+# failregex = ^%(__prefix_line)sexit before auth from <HOST>.*\s*$
+
+# Option:  ignoreregex
+# Notes.:  regex to ignore. If this regex matches, the line is ignored.
+# Values:  TEXT
+#
+ignoreregex = 
--- a/config/filter.d/proftpd.conf
+++ b/config/filter.d/proftpd.conf
@ -14,10 +14,10 @@
 #          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
 # Values: TEXT
 #
-failregex = \(\S+\[<HOST>\]\)[: -]+ USER \S+: no such user found from \S+ \[\S+\] to \S+:\S+$
-            \(\S+\[<HOST>\]\)[: -]+ USER \S+ \(Login failed\): Incorrect password\.$
-            \(\S+\[<HOST>\]\)[: -]+ SECURITY VIOLATION: \S+ login attempted\.$
-            \(\S+\[<HOST>\]\)[: -]+ Maximum login attempts \(\d+\) exceeded$
+failregex = \(\S+\[<HOST>\]\)[: -]+ USER \S+: no such user found from \S+ \[\S+\] to \S+:\S+ *$
+            \(\S+\[<HOST>\]\)[: -]+ USER \S+ \(Login failed\): .*$
+            \(\S+\[<HOST>\]\)[: -]+ SECURITY VIOLATION: \S+ login attempted\. *$
+            \(\S+\[<HOST>\]\)[: -]+ Maximum login attempts \(\d+\) exceeded *$

 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.
--- a/config/filter.d/pure-ftpd.conf
+++ b/config/filter.d/pure-ftpd.conf
@ -19,7 +19,7 @@ __errmsg = (?:Authentication failed for user|Erreur d'authentification pour l'ut
 #         (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
 # Values: TEXT
 #
-failregex = pure-ftpd(?:\[\d+\])?: (.+?@<HOST>) \[WARNING\] %(__errmsg)s \[.+\]$
+failregex = pure-ftpd(?:\[\d+\])?: \(.+?@<HOST>\) \[WARNING\] %(__errmsg)s \[.+\]\s*$

 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.
--- a/config/filter.d/sasl.conf
+++ b/config/filter.d/sasl.conf
@ -14,7 +14,7 @@
 #          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
 # Values: TEXT
 #
-failregex = (?i): warning: [-._\w]+\[<HOST>\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [A-Za-z0-9+/]*={0,2})?$
+failregex = (?i): warning: [-._\w]+\[<HOST>\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed(: [ A-Za-z0-9+/]*={0,2})?$

 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.