PHP SSCANF() Safe_Mode Restriction-Bypass Vulnerability

PHP is prone to a 'safe_mode' restriction-bypass vulnerability. Successful exploits could allow an attacker to write files in unauthorized locations and potentially execute code.

This vulnerability would be an issue in shared-hosting configurations where multiple users can create and execute arbitrary PHP script code, all assuming that the 'safe_mode' restriction will isolate the users from each other.

This issue is reported to affect PHP versions 4.4.3 and 5.1.4; other versions may also be vulnerable.