Check Point Advisories

PHP 7 Unserialization Exception Infinite Loop Denial of Service (CVE-2016-7478)

Vulnerability
Protection

Check Point Reference:	CPAI-2016-0812
Date Published:	18 Oct 2016
Severity:	Medium
Last Updated:	Tuesday 07 March, 2017
Source:	PHP Group 73093
Industry Reference:	CVE-2016-7478
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP Group PHP 5.6.x up to 5.6.29 PHP Group PHP 7.0.x up to 7.0.13
Vulnerability Description	A Denial of Service vulnerability exists in PHP 7. A remote attacker can exploit this vulnerability by sending specially crafted input to the unserialize() function.

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 7 Unserialization Exception Infinite Loop Denial of Service 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 7 Unserialization Exception Infinite Loop Denial of Service