Check Point Advisories

OpenSSL TLS Missing SRP Extension Denial of Service (CVE-2014-5139)

Vulnerability
Protection

Check Point Reference:	CPAI-2014-1988
Date Published:	27 Jan 2015
Severity:	Medium
Last Updated:	Sunday 03 December, 2017
Source:
Industry Reference:	CVE-2014-5139
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenSSL clients prior to 1.0.1i.
Vulnerability Description	A denial of service vulnerability has been reported in OpenSSL. The vulnerability is due to an issue while parsing Server Hello messages with a specific cipher suite and extension. A remote unauthenticated attacker could exploit this vulnerability by sending a specially crafted packet to a target machine.

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 OpenSSL TLS Missing SRP Extension 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: SSL Enforcement Violation.
Attack Information: OpenSSL TLS Missing SRP Extension Denial of Service