Check Point Advisories

Microsoft Active Accessibility DLL Loading Remote Code Execution (MS11-075; CVE-2011-1247)

Check Point Reference: CPAI-2011-453
Date Published: 11 Oct 2011
Severity: High
Last Updated: Tuesday 11 October, 2011
Source:
Industry Reference:CVE-2011-1247
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70

Who is Vulnerable?
Vulnerability Description A remote code execution vulnerability has been reported in Microsoft Windows Active Accessibility component. The vulnerability is due to an error in the way certain applications using OleAut32.dll handle the loading of DLL files. A remote attacker may exploit this vulnerability by enticing a user to open a malicious document from a remote location such as an SMB or WebDAV. Successful exploitation may allow an attacker to take complete control of an affected system.

Protection Overview

This protection will detect and block the transferring of malicious DLL files over SMB.

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

  1. In the IPS tab, click Protections and find the Microsoft Active Accessibility DLL Loading Remote Code Execution (MS11-075) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Windows SMB Protection Violation.
Attack Information:  Microsoft Active Accessibility DLL loading remote code execution (MS11-075)

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