Check Point Advisories

OpenSSL Denial of Service (CVE-2018-0732)

Vulnerability
Protection

Check Point Reference:	CPAI-2019-0250
Date Published:	17 Feb 2019
Severity:	Medium
Last Updated:	Tuesday 26 February, 2019
Source:	OpenSSL
Industry Reference:	CVE-2018-0732
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenSSL Project OpenSSL 1.0.2-1.0.2o OpenSSL Project OpenSSL 1.1.0-1.1.0h
Vulnerability Description	A denial-of-service vulnerability has been reported in OpenSSL. The vulnerability is due to improper handling of an exceptionally large DH parameter when processing a Server Key Exchange. Successful exploitation would result in a crash of the server process leading to denial of service.

Protection Overview

This protection detects 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 Denial of Service (CVE-2018-0732) 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: OpenSSL Enforcement Violation.
Attack Information: OpenSSL Denial of Service (CVE-2018-0732)