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adding filter to detect Shellshock attack attempts against bash scripts through apache. See http://seclists.org/oss-sec/2014/q3/650

pull/818/head
SlowRiot 2014-09-26 16:25:07 +01:00
parent bfaf33b6ba
commit 4f636eb0e3
1 changed files with 26 additions and 0 deletions
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config/filter.d/apache-shellshock.conf Normal file
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# Fail2Ban filter to block web requests containing custom headers attempting to exploit the shellshock bug
#
#
[INCLUDES]
# overwrite with apache-common.local if _apache_error_client is incorrect.
before = apache-common.conf
[Definition]
failregex = ^%(_apache_error_client)s (AH01215: )?/bin/(ba)?sh: warning: HTTP_.*?: ignoring function definition attempt(, referer: \S+)?\s*$
^%(_apache_error_client)s (AH01215: )?/bin/(ba)?sh: error importing function definition for `HTTP_.*?'(, referer: \S+)?\s*$
ignoreregex =
# DEV Notes:
#
# https://wiki.apache.org/httpd/ListOfErrors for apache error IDs
#
# example log lines:
# [Thu Sep 25 09:27:18.813902 2014] [cgi:error] [pid 16860] [client 89.207.132.76:59635] AH01215: /bin/bash: warning: HTTP_TEST: ignoring function definition attempt
# [Thu Sep 25 09:29:56.141832 2014] [cgi:error] [pid 16864] [client 162.247.73.206:41273] AH01215: /bin/bash: error importing function definition for `HTTP_TEST'
#
# Author: Eugene Hopkinson (riot@riot.so)