CVE-2006-6383
PHP 5.2.0 and 4.4 allows local users to bypass safe_mode and open_basedir restrictions via a malicious path and a null byte before a ";" in a session_save_path argument, followed by an allowed path, which causes a parsing inconsistency in which PHP validates the allowed path but sets session.save_path to the malicious path.
Date published : 2006-12-10
http://www.securityfocus.com/bid/21508
http://www.securityfocus.com/archive/1/453938/30/9270/threaded