Microsoft WMF memory corruption vulnerability

Overview

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

Description

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.

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Impact

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.

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Solution

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.

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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.

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Vendor Information

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Microsoft Corporation __ Affected

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

Status

Affected

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.

Addendum

Please see <http://www.microsoft.com/technet/security/advisory/913333.mspx&gt; and <http://www.microsoft.com/technet/security/Bulletin/MS06-004.mspx&gt;.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23312956 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://linuxbox.org/pipermail/funsec/2006-January/002828.html&gt;
• <http://www.microsoft.com/technet/security/advisory/913333.mspx&gt;
• <http://secunia.com/advisories/18729/&gt;
• <http://www.microsoft.com/windows/ie/downloads/critical/ie6sp1/default.mspx&gt;
• <http://www.microsoft.com/technet/security/Bulletin/MS06-004.mspx&gt;

Acknowledgements

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: