fopen_wrappers.c in PHP 5.3.x through 5.3.3 might allow remote attackers to bypass open_basedir restrictions via vectors related to the length of a filename.
lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
secunia.com/advisories/42729
secunia.com/advisories/42812
security-tracker.debian.org/tracker/CVE-2010-3436
slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.490619
support.apple.com/kb/HT4581
support.apple.com/kb/HT5002
svn.php.net/viewvc/php/php-src/trunk/main/fopen_wrappers.c?r1=303824&r2=303823&pathrev=303824
svn.php.net/viewvc?view=revision&revision=303824
www.mandriva.com/security/advisories?name=MDVSA-2010:218
www.php.net/archive/2010.php#id2010-12-10-1
www.php.net/ChangeLog-5.php
www.php.net/releases/5_2_15.php
www.php.net/releases/5_3_4.php
www.securityfocus.com/bid/44723
www.ubuntu.com/usn/USN-1042-1
www.vupen.com/english/advisories/2010/3313
www.vupen.com/english/advisories/2011/0077