Check Point Advisories

Mozilla Network Security Services SSLv2 Server Stack Overflow (CVE-2007-0009)

Check Point Reference: CPAI-2007-240
Date Published: 16 Feb 2010
Severity: Critical
Last Updated: Tuesday 16 February, 2010
Source:
Industry Reference:CVE-2007-0009
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Mozilla Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. NSS provides a support for Secure Sockets Layer (SSL), Secure / Multipurpose Internet Mail Extensions (S/MIME) and other security standards. There exists a buffer overflow vulnerability in Mozilla Network Security Services (NSS). The vulnerability is due to improper handling of the master key while negotiating an SSLv2 session. Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code on the vulnerable system in the context of the affected application, commonly System. Upon an attack where code execution is unsuccessful, the affected server application will encounter an unexpected exception. Normally, the process of the affected application will terminate abnormally.

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

  1. In the IPS tab, click Protections and find the Mozilla Network Security Services SSLv2 Server Stack Overflow protection using the Search tool and Edit the protection's settings.
  2. 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 SSLv2 server stack overflow

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