php is vulnerable to denial of service (DoS). The vulnerability exists as an integer signedness issue was found in the PHP zip extension. An attacker could use a specially-crafted ZIP archive to cause the PHP interpreter to use an excessive amount of CPU time until the script execution time limit is reached.
bugs.php.net/bug.php?id=49072
lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
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/46975
www.vupen.com/english/advisories/2011/0744
access.redhat.com/errata/RHSA-2011:1423
access.redhat.com/security/updates/classification/#moderate