ID:11565 - Exploit for Input validation error in PHP - CVE-2007-1700

Link to public exploit:

Vulnerability description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

The session extension in PHP 4 before 4.4.5, and PHP 5 before 5.2.1, calculates the reference count for the session variables without considering the internal pointer from the session globals, which allows context-dependent attackers to execute arbitrary code via a crafted string in the session_register after unsetting HTTP_SESSION_VARS and _SESSION, which destroys the session data Hashtable.

Remediation