Check Point Advisories

OpenSSL TLS NULL Pointer Dereference Denial of Service (CVE-2020-1967)

Vulnerability
Protection

Check Point Reference:	CPAI-2020-0407
Date Published:	2 Jun 2020
Severity:	High
Last Updated:	Tuesday 02 June, 2020
Source:
Industry Reference:	CVE-2020-1967
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	OpenSSL 1.1.1d-1.1.1f
Vulnerability Description	A NULL pointer dereference vulnerability exists in OpenSSL TLS. Successful exploitation results in a denial of service condition on the affected 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 TLS NULL Pointer Dereference Denial of Service (CVE-2020-1967) 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 NULL Pointer Dereference Denial of Service (CVE-2020-1967)