CVE-2009-3557
The tempnam function in ext/standard/file.c in PHP before 5.2.12 and 5.3.x before 5.3.1 allows context-dependent attackers to bypass safe_mode restrictions, and create files in group-writable or world-writable directories, via the dir and prefix arguments.
Date published : 2009-11-23
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html