Check Point Advisories

PHP Fileinfo Call Stack Exhaustion Denial of Service (CVE-2014-1943)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1169
Date Published:	23 Mar 2014
Severity:	Critical
Last Updated:	Sunday 27 April, 2014
Source:	PHP #66731
Industry Reference:	CVE-2014-1943
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP Group PHP 5.3.x PHP Group PHP 5.4.x PHP Group PHP 5.5.x
Vulnerability Description	A denial of service vulnerability has been reported in PHP Fileinfo. Successful exploitation could result in a denial of service condition. The vulnerability is due to call stack exhaustion when mget handles a magic string. A remote attacker can exploit this flaw by sending a malicious request. Successful exploitation could result in a denial of service condition.

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 Fileinfo Call Stack Exhaustion 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 Fileinfo Call Stack Exhaustion Denial of Service_1