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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)