Check Point Advisories

PHP WDDX Deserialization Use After Free (CVE-2016-7413)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0830
Date Published:	27 Sep 2016
Severity:	Critical
Last Updated:	Thursday 06 October, 2016
Source:
Industry Reference:	CVE-2016-7413
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP before 5.6.26 and 7.x before 7.0.11
Vulnerability Description	A Use-After-Free vulnerability exists in PHP during deserialization of WDDX elements. A remote attacker can exploit this vulnerability by supplying a crafted wddxPacket XML document. A successful attack can result in a denial of service.

Protection Overview

This protection detects 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 WDDX Deserialization Use After Free 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 WDDX Deserialization Use After Free