Check Point Advisories

Microsoft Windows Multiple COM Binary Planting Vulnerabilities (MS11-076; CVE-2011-1991; CVE-2011-2009)

Vulnerability
Protection

Check Point Reference:	CPAI-2011-463
Date Published:	11 Oct 2011
Severity:	High
Last Updated:	Tuesday 11 October, 2011
Source:
Industry Reference:	CVE-2011-1991 CVE-2011-2009
Protection Provided by:	Security Gateway R81, R80, R77, R75, R71, R70
Who is Vulnerable?
Vulnerability Description	The vulnerabilities are due to the way Windows COM servers improperly restrict the paths used when loading external libraries. A remote attacker may exploit these vulnerabilities by enticing an unsuspecting user to open a specially crafted file from a WebDAV or an SMB shareSuccessful exploitation may cause a memory corruption in a way that will allow an attacker to execute arbitrary code on an affected system, in the security context of the logged on user.

Protection Overview

This protection will detect and block attempts to access specially crafted folders over SMB and WebDAV.

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

In the IPS tab, click Protections and find the Microsoft Windows Multiple COM Binary Planting Vulnerabilities (MS11-076) 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: Windows SMB Protection Violation.
Attack Information: Microsoft Windows Multiple COM Binary Planting Vulnerabilities (MS11-076)