Microsoft Windows WMF/EMF File Rendering Arbitrary Code Execution - Secunia Advisories - Vulnerability Information

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Microsoft Windows WMF/EMF File Rendering Arbitrary Code Execution

Secunia Advisory:

SA17498

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Release Date:

2005-11-08

Last Update:

2006-02-10

Popularity:

26,225 views

Critical:

Highly critical

Impact:

System access

Where:

From remote

Solution Status:

Vendor Patch

OS:

Microsoft Windows 2000 Advanced Server
Microsoft Windows 2000 Datacenter Server
Microsoft Windows 2000 Professional
Microsoft Windows 2000 Server
Microsoft Windows Server 2003 Datacenter Edition
Microsoft Windows Server 2003 Enterprise Edition
Microsoft Windows Server 2003 Standard Edition
Microsoft Windows Server 2003 Web Edition
Microsoft Windows XP Embedded
Microsoft Windows XP Home Edition
Microsoft Windows XP Professional

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Advisory Content (Page 1 of 3)

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Description:
Two vulnerabilities have been reported in Microsoft Windows, which can be exploited by malicious people to compromise a vulnerable system.

1) Some integer overflow errors exist in the Graphics Rendering Engine GDI32.DLL (e.g. MRBP16::bCheckRecord) when rendering certain malformed Windows Metafile (WMF) and Enhanced Metafile (EMF) image files. This can be exploited to cause a heap-based buffer overflow and allows arbitrary code execution on a user's system via a specially crafted WMF/EMF file.

2) An integer overflow error exists in the "PlayMetaFileRecord" function of GDI32.DLL when handling the "SetPaletteEntries" records in a Windows Metafile (WMF) image file. This can be exploited to cause a heap-based buffer overflow and allows arbitrary code execution on a user's system via a specially crafted WMF file.

Vulnerability #1 and #2 reportedly affects any program that renders the affected image types and can be exploited by e.g. tricking the user to open a malicious WMF/EMF file, or to view a folder that contains the image.

The vulnerabilities are also reportedly exploitable by embedding the image in an Office document, or by convincing the user to view an HTML email containing an image attachment in Outlook, or via a malicious web site.

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