Check Point Advisories

PHP php_parserr DNS_TXT Heap Buffer Overflow (CVE-2014-4049)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1718
Date Published:	16 Jul 2014
Severity:	High
Last Updated:	Monday 28 July, 2014
Source:	PHP Group
Industry Reference:	CVE-2014-4049
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	PHP Group PHP prior to 5.4.30 PHP Group PHP prior to 5.5.14
Vulnerability Description	A heap buffer vulnerability exists in the php_parserr() function in PHP. The vulnerability is due to an error in parsing malformed DNS TXT records. An attacker can exploit this vulnerability if the application uses the vulnerable function.

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 php_parserr DNS_TXT Heap Buffer Overflow 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: Application Intelligence.
Attack Information: PHP php_parserr DNS_TXT Heap Buffer Overflow