Check Point Advisories

Microsoft Terminal Services Remote Denial Of Service (MS11-065; CVE-2011-1968)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-364
Date Published:	9 Aug 2011
Severity:	High
Last Updated:	Sunday 14 February, 2016
Source:
Industry Reference:	CVE-2011-1968
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description	This is a denial of service vulnerability. The vulnurability is caused due to a race condition created when the application is attempting to report an error. An attacker could trigger this flaw by repeatedly sending malicious rdp requests to an affected system. Successful exploitation may cause the application to crash, resulting in a denial of service condition.

Protection Overview

This protection will detect and block attempts to send malicious RDP requests.

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 / R71 / R70 / R65

In the IPS tab, click Protections and find the Microsoft Terminal Services Remote Denial Of Service (MS11-065) 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: RDP Enforcement Violation.
Attack Information: Microsoft Terminal Services remote denial of service (MS11-065)