Check Point Advisories

Microsoft ATL Uninitialized Object Code Execution (MS09-037; CVE-2009-0901)

Check Point Reference: CPAI-2009-410
Date Published: 2 Jun 2010
Severity: High
Last Updated: Wednesday 02 June, 2010
Source:
Industry Reference:CVE-2009-0901
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description Microsoft Active Template Library (ATL) is a set of template-based C++ classes developed to help simplify the programming of Component Object Model (COM) objects. The COM support in Microsoft Visual C++ allows developers to create a variety of COM objects, OLE Automation servers, and ActiveX controls. ATL is an object-based library that contains many types of classes. There is a remote code execution vulnerability in Microsoft Active Template Library (ATL). The vulnerability is due to an error in the way certain ATL headers are handled. In certain cases it is possible to force VariantClear to be called on a VARIANT that has not been correctly initialized. Remote attackers can exploit this issue by enticing target users to visit a malicious web page, potentially causing arbitrary code to be injected and executed in the security context of the current logged on user. In case of an attack where code injection and execution is successful, the behavior of the target machine is dependent on the intended purpose of the malicious code. Any code injected would run in the security context of the logged-on user

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

  1. In the IPS tab, click Protections and find the Microsoft ATL Uninitialized Object Code Execution (MS09-037) 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:  Web Client Enforcement Violation.
Attack Information:  Microsoft ATL uninitialized object code execution (MS09-037)

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