Check Point Advisories

Mozilla Network Security Services RSA Signature Forgery (CVE-2014-1568)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1912
Date Published:	19 Oct 2014
Severity:	High
Last Updated:	Sunday 19 November, 2017
Source:	Mozilla mfsa2014-73
Industry Reference:	CVE-2014-1568
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Mozilla Foundation Network Security Services prior to 3.16.2.1 Mozilla Foundation Network Security Services prior to 3.16.5 Mozilla Foundation Network Security Services prior to 3.17.1
Vulnerability Description	An RSA signature forgery vulnerability exists in Mozilla Network Security Services (NSS), the cryptographic library used in many applications including Firefox and Google Chrome. The vulnerability is a result of improper verification of RSA signatures due to incorrect ASN.1 parsing of the DigestInfo structure. A remote attacker could exploit this vulnerability by providing a forged certificate e.g. for a legitimate website. Successful exploitation would result in successful verification of the forged certificate, which could lead to information disclosure, spoofing and policy bypass.

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 Mozilla Network Security Services RSA Signature Forgery 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 RSA Signature Forgery