Check Point Advisories

Sysax Multi Server SSH Component Denial Of Service

Vulnerability
Protection

Check Point Reference:	CPAI-2015-1137
Date Published:	6 Oct 2015
Severity:	High
Last Updated:	Tuesday 06 October, 2015
Source:
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Sysax Multi Server 6.40
Vulnerability Description	A denial-of-service vulnerability has been reported in Sysax Multi Server. The vulnerability is due to incorrectly dereferencing NULL pointers when handling certain malformed SSH messages. An unauthenticated, remote attacker could exploit this vulnerability by sending a crafted SSH message to the affected server. Successful exploitation results in a DoS condition.

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 Sysax Multi Server SSH Component 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: SSH Protection Violation.
Attack Information: Sysax Multi Server SSH Component Denial Of Service