CVE-2007-1711
Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007).
Date published : 2007-03-26
http://lists.apple.com/archives/security-announce//2007/Jul/msg00004.html