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Server : Apache/2.4.18 (Ubuntu) System : Linux canvaswebdesign 3.13.0-71-generic #114-Ubuntu SMP Tue Dec 1 02:34:22 UTC 2015 x86_64 User : oppastar ( 1041) PHP Version : 7.0.33-0ubuntu0.16.04.15 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_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority, Directory : /etc/fail2ban/filter.d/ |
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# Fail2Ban filter to block web requests on a long or suspicious nature # [INCLUDES] # overwrite with apache-common.local if _apache_error_client is incorrect. before = apache-common.conf [Definition] failregex = ^%(_apache_error_client)s ((AH0013[456]: )?Invalid (method|URI) in request .*( - possible attempt to establish SSL connection on non-SSL port)?|(AH00565: )?request failed: URI too long \(longer than \d+\)|request failed: erroneous characters after protocol string: .*|AH00566: request failed: invalid characters in URI)(, referer: \S+)?$ ignoreregex = # DEV Notes: # # fgrep -r 'URI too long' httpd-2.* # httpd-2.2.25/server/protocol.c: "request failed: URI too long (longer than %d)", r->server->limit_req_line); # httpd-2.4.4/server/protocol.c: "request failed: URI too long (longer than %d)", # # fgrep -r 'in request' ../httpd-2.* | fgrep Invalid # httpd-2.2.25/server/core.c: "Invalid URI in request %s", r->the_request); # httpd-2.2.25/server/core.c: "Invalid method in request %s", r->the_request); # httpd-2.2.25/docs/manual/rewrite/flags.html.fr:avertissements 'Invalid URI in request'. # httpd-2.4.4/server/core.c: "Invalid URI in request %s", r->the_request); # httpd-2.4.4/server/core.c: "Invalid method in request %s - possible attempt to establish SSL connection on non-SSL port", r->the_request); # httpd-2.4.4/server/core.c: "Invalid method in request %s", r->the_request); # # fgrep -r 'invalid characters in URI' httpd-2.* # httpd-2.4.4/server/protocol.c: "request failed: invalid characters in URI"); # # http://svn.apache.org/viewvc/httpd/httpd/trunk/server/core.c?r1=739382&r2=739620&pathrev=739620 # ...possible attempt to establish SSL connection on non-SSL port # # https://wiki.apache.org/httpd/ListOfErrors # Author: Tim Connors