Check Point Advisories

PHP Date Time Object Unserialize Memory Corruption (CVE-2015-0273)

Vulnerability
Protection

Check Point Reference:	CPAI-2015-0234
Date Published:	8 Mar 2015
Severity:	Critical
Last Updated:	Tuesday 20 October, 2015
Source:	PHP
Industry Reference:	CVE-2015-0273
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP Group PHP prior to 5.4.38 PHP Group PHP prior to 5.5.22 PHP Group PHP prior to 5.6.6
Vulnerability Description	A code execution vulnerability has been reported in PHP. The vulnerability is due to a use-after-free error when handling serialized Date/Time objects within the unserialize() function. A remote attacker can exploit the vulnerability by sending crafted serialized data to a web application running a vulnerable version of PHP.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the PHP Date Time Object Unserialize Memory Corruption protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: PHP Date Time Object Unserialize Memory Corruption