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Insecure Library Loading
Extremely critical

Microsoft Windows WMF "SETABORTPROC" Arbitrary Code Execution

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Description


A vulnerability has been discovered in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerability is caused due to an error in the handling of Windows Metafile files (".wmf") containing specially crafted SETABORTPROC "Escape" records. Such records allow arbitrary user-defined function to be executed when the rendering of a WMF file fails. This can be exploited to execute arbitrary code by tricking a user into opening a malicious ".wmf" file in "Windows Picture and Fax Viewer" or previewing a malicious ".wmf" file in explorer (i.e. opening a folder containing a malicious image file).

The vulnerability can also be exploited automatically when a user visits a malicious web site using Microsoft Internet Explorer.

NOTE: Exploit code is publicly available. This is being exploited in the wild. The vulnerability can also be triggered from explorer if the malicious file has been saved to a folder and renamed to other image file extensions like ".jpg", ".gif, ".tif", and ".png" etc.

The vulnerability has been confirmed on a fully patched system running Microsoft Windows XP SP2. Microsoft Windows 2000, Windows XP SP1 and Microsoft Windows Server 2003 SP0 / SP1 are also affected.


Solution:
Apply patches.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Dan Hubbard, WebSense.

First reported in the wild by "noemailpls".

Exploit code and additional information provided by H D Moore.

Original Advisory:
MS06-001 (KB912919):
http://www.microsoft.com/technet/security/Bulletin/MS06-001.mspx

Microsoft (KB912840):
http://www.microsoft.com/technet/security/advisory/912840.mspx

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft Windows WMF "SETABORTPROC" Arbitrary Code Execution

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