Check Point Advisories

Internet Explorer Insecure Library Loading Code Execution (MS11-089; CVE-2011-2019)

Check Point Reference: CPAI-2011-572
Date Published: 13 Dec 2011
Severity: High
Last Updated: Tuesday 13 December, 2011
Source:
Industry Reference:CVE-2011-2019
Protection Provided by:

Security Gateway
R81, R80, R77, R75, R71, R70, R65
Who is Vulnerable?
Vulnerability Description A remote code execution vulnerability has been reported in Internet Explorer (IE). The vulnerability is due to an error in the way IE restricts the path used for loading external libraries. A remote attacker could exploit this vulnerability by enticing a user to open a legitimate HTML file that is located in the same network directory as a specially crafted dynamic link library (DLL) file. Successful exploitation could allow an attacker to execute arbitrary code in the security context of the logged-on user.

Protection Overview

This protection will detect and block the transferring of malicious DLL files over a network share.

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

  1. In the IPS tab, click Protections and find the Internet Explorer Insecure Library Loading Code Execution (MS11-089) 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:  Internet Explorer insecure library loading code execution (MS11-089)

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