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Microsoft WMF memory corruption vulnerability

Vulnerability Note VU#312956

Original Release Date: 2006-02-09 | Last Revised: 2006-02-14


Microsoft applications fail to properly handle Windows Metafile (WMF) images potentially allowing a remote attacker to execute arbitrary code on a vulnerable system.


The Microsoft Windows Graphics Rendering Engine supports a number of image formats including WMF images. Windows WMF processing routines do not properly handle WMF images. This may allow a remote attacker to manipulate memory management routines resulting in a buffer overflow. Note that WMF processing is used in many Windows programs including Internet Explorer and Outlook.

For more information, including a list of affected versions of Internet Explorer, please see Microsoft Security Advisory 913333 and Microsoft Security Bulletin MS06-004.


By persuading a user to open a specially crafted WMF image file, an attacker may be able to execute arbitrary code with the privileges of the user.


This issue is corrected in Internet Explorer 6 Service Pack 1. In addition, Microsoft Security Bulletin MS06-004 contains a cumulative update to correct this vulnerability.

Do not accept WMF files from untrusted sources

By only accessing WMF image files from trusted or known sources, the chances of exploitation are reduced.

Vendor Information


Microsoft Corporation Affected

Notified:  February 08, 2006 Updated: February 14, 2006



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


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This issue was reported in Microsoft Security Advisory 913333.

This document was written by Jeff Gennari.

Other Information

CVE IDs: CVE-2006-0020
Severity Metric: 19.31
Date Public: 2006-01-09
Date First Published: 2006-02-09
Date Last Updated: 2006-02-14 19:52 UTC
Document Revision: 31

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