php is vulnerable to denial of service (DoS). The vulnerability exists as an integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash.
bugs.php.net/bug.php?id=53574
lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
rhn.redhat.com/errata/RHSA-2012-0071.html
secunia.com/advisories/48668
support.apple.com/kb/HT5002
www.debian.org/security/2011/dsa-2266
www.mandriva.com/security/advisories?name=MDVSA-2011:052
www.mandriva.com/security/advisories?name=MDVSA-2011:053
www.php.net/ChangeLog-5.php
www.php.net/security/crypt_blowfish.php
www.redhat.com/support/errata/RHSA-2011-1423.html
www.securityfocus.com/bid/46967
www.vupen.com/english/advisories/2011/0744
access.redhat.com/errata/RHSA-2011:1423
access.redhat.com/security/updates/classification/#moderate