The strrchr function in PHP 5.2 before 5.2.14 allows context-dependent attackers to obtain sensitive information (memory contents) or trigger memory corruption by causing a userspace interruption of an internal function or handler.
lists.apple.com/archives/security-announce/2010//Aug/msg00003.html
lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
lists.opensuse.org/opensuse-security-announce/2010-10/msg00000.html
marc.info/?l=bugtraq&m=133469208622507&w=2
support.apple.com/kb/HT4312
support.apple.com/kb/HT4435
www.php.net/releases/5_2_14.php
bugzilla.redhat.com/show_bug.cgi?id=619324