Stack consumption vulnerability in the filter_var function in PHP 5.2.x through 5.2.14 and 5.3.x through 5.3.3, when FILTER_VALIDATE_EMAIL mode is used, allows remote attackers to cause a denial of service (memory consumption and application crash) via a long e-mail address string.
http://www.vupen.com/english/advisories/2011/0077
http://www.vupen.com/english/advisories/2011/0021
http://www.vupen.com/english/advisories/2011/0020
http://www.ubuntu.com/usn/USN-1042-1
http://www.securityfocus.com/bid/43926
http://www.redhat.com/support/errata/RHSA-2011-0196.html
http://www.php.net/releases/5_3_4.php
http://www.php.net/releases/5_2_15.php
http://www.php.net/archive/2010.php#id2010-12-10-1
http://www.php.net/ChangeLog-5.php
http://www.mandriva.com/security/advisories?name=MDVSA-2010:218
http://support.apple.com/kb/HT4581
http://secunia.com/advisories/43189
http://secunia.com/advisories/42812
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052845.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052836.html
http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html