Check Point Advisories

Mozilla Network Security Services Regexp Heap Overflow - Improved Performance (CVE-2009-2404)

Vulnerability
Protection

Check Point Reference:	CPAI-2013-1805
Date Published:	8 May 2013
Severity:	High
Last Updated:	Sunday 19 November, 2017
Source:
Industry Reference:	CVE-2009-2404
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. it is used by applications such as Mozilla Firefox and Mozilla Thunderbird. A remote code execution vulnerability has been reported within Mozilla Network Security Services. The vulnerability is due to a heap buffer overflow in NSS when handling malformed certificates with a crafted Common Name (CN) field. A remote attacker can exploit this flaw by sending a malicious certificate to a vulnerable system. Successful exploitation of this issue could result in execution of arbitrary code on the vulnerable system.

Protection Overview

This protection will detect and block malicious certificates that contain a crafted Common Name.

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 Mozilla Network Security Services Regexp Heap Overflow - Improved Performance 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 Client Enforcement Violation.
Attack Information: Mozilla Network Security Services Regexp Heap Overflow - Improved Performance