Server : Apache/2.4.52 (Ubuntu) System : Linux srv913213 5.15.0-179-generic #189-Ubuntu SMP Tue May 5 18:20:56 UTC 2026 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /proc/self/root/etc/fail2ban/filter.d/

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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]

prefregex = ^%(_apache_error_client)s (AH01215: )?/bin/([bd]a)?sh: <F-CONTENT>.+</F-CONTENT>$

failregex = ^warning: HTTP_[^:]+: ignoring function definition attempt(, referer: \S+)?\s*$
            ^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 (e.hopkinson@gmail.com)