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Tracking down URL Injection




Posted by Mark Muyskens, 06-30-2010, 07:13 PM
Hey, I have a server here that seems to be trying to URL inject an external domain. Here's a log from THERE end; Where externaldomain.com is there domain, and 0.0.0.0 is our servers IP. Any ideas to assist with tracking this down would be appreciated. Thanks!

Posted by VIPoint, 07-01-2010, 02:05 AM
Hi, You need to disable hot-link protection for your websites. If you are using cPanel then you can disable this using the cPanel control panel >> Security center>> hotlink protection.

Posted by webhostreview, 07-01-2010, 05:07 AM
You should install ModSec to the server. It easy to use.

Posted by khunj, 07-01-2010, 06:55 AM
This is an attempt to get a shell through local file inclusion. A simple mod_rewrite rule is enough to get rid of it.

Posted by spykee, 07-01-2010, 11:04 AM
Yes, mod_security should help you. Also, disable PHP functions that are not in use, like - exec(), shell_exec() & etc.

Posted by david510, 07-01-2010, 03:08 PM
You can prevent this by adding this rule to the modsec

Posted by brianoz, 07-01-2010, 11:40 PM
Good idea to install both mod_security and CSF firewall. CSF can take repeated mod_security hits and just block the site in the firewall completely, and it does it automatically. This does require a Unixy host of course!



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