MOD_SUPHP is an Apache module that allows php scripts to run as users rather than the www-data user. A condition exists that would allow an attacker to use this module to run arbitrary code.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34127/suphp-advisory.txt
Source: https://packetstormsecurity.com/files/34127/suphp-advisory.txt.html