PHP 'filter_var()' function Stack Consumption Vulnerability

Summary
This host is running PHP and is prone to stack consumption vulnerability
Impact
Successful exploitation could allows remote attackers to cause a denial of service (memory consumption and application crash) via a long e-mail address string. Impact Level: Network
Solution
Upgrade to PHP version 5.5.9 or later, For updates refer to http://www.php.net/downloads.php
Insight
- The flaw exists due to error in 'filter_var()' function, when FILTER_VALIDATE_EMAIL mode is used while processing the long e-mail address string. - A NULL pointer dereference vulnerability is exists in 'ZipArchive::getArchiveComment'.
Affected
PHP version 5.2 through 5.2.14 and 5.3 through 5.3.3
References