Microsoft Windows graphics engine thumbnail stack buffer overflow

Overview

Microsoft Windows contains a stack-based buffer overflow vulnerability in the graphics rendering engine, which may allow an attacker to execute arbitrary code.

Description

Microsoft Windows contains a stack-based buffer overflow vulnerability caused by a signedness error in the “CreateSizedDIBSECTION()” function within the shimgvw.dll library when parsing thumbnail bitmaps containing a negative “biClrUsed” value.

Exploit code for this vulnerability is publicly available.

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Impact

By convincing a user to view a specially crafted file containing a malicious thumbnail bitmap value, an attacker may be able to execute arbitrary code with the privileges of the user.

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Solution

Apply an update

This issue is addressed in Microsoft Security Bulletin MS11-006.

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Modify the Access Control List (ACL) on shimgvw.dll

Microsoft has published information on modifying the Access Control List (ACL) on shimgvw.dll as a mitigation for this vulnerability.

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Vendor Information

Windows 7 and Windows Server 2008 R2 are not affected by this vulnerability

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Microsoft Corporation Affected

Updated: February 08, 2011

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

• <http://www.microsoft.com/technet/security/advisory/2490606.mspx&gt;
• <http://www.microsoft.com/technet/security/bulletin/ms11-006.mspx&gt;

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.microsoft.com/technet/security/advisory/2490606.mspx&gt;
• <http://www.microsoft.com/technet/security/bulletin/ms11-006.mspx&gt;

Acknowledgements

This document was written by Michael Orlando.

Other Information

CVE IDs:	CVE-2010-3970
Severity Metric:	57.32 Date Public: