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                     Symantec Vulnerability Research
                     http://www.symantec.com/research
                           Security Advisory

Advisory ID   : SYMSA-2006-004
Advisory Title: Vulnerability in Graphics Rendering Engine Could
                Allow Remote Code Execution
Author        : Peter Ferrie / peter_ferrie@symantec.com
Release Date  : 06-13-2006
Application   : Those which utilize the vulnerable function on
                affected platforms
Platform      : Windows 98, Windows 98 Second Edition, Windows
                Millennium Edition
Severity      : Remotely exploitable arbitrary code execution
Vendor status : Vendor verified, patch available (See MS06-026
                and KB918547)
CVE Number    : CVE-2006-2376
Reference     : http://www.securityfocus.com/bid/18322


Overview:

        A remote code execution vulnerability exists in the
        Graphics Rendering Engine because of the way that it
        handles Windows Metafile (WMF) images.

        An attacker could exploit this by placing a specially
        crafted WMF or EMF image on a webpage, or by sending
        the image as an attachment in an e-mail.  The exploit
        is triggered by viewing the specially crafted image
        file.  No user interaction is required.

        An attacker who successfully exploited this vulnerability
        could take complete control of the affected system.


Details:

        A heap overflow vulnerability exists in the WMF
        PolyPolygon function, because of an unchecked user-
        supplied parameter.

        <Details witheld for 30 days. Full disclosure on 
        July 11, 2006>

        The manner of the heap corruption is under user control,
        which can result in the execution of arbitrary code.


Vendor Response:

        The above vulnerability was addressed for the affected
        platforms via Microsoft Security Bulletin MS06-026. If
        there are any further questions about this statement,
        please contact secure@microsoft.com.


Recommendation:

        Follow your organization's testing procedures before
        applying patches or workarounds.  Customers should apply
        Microsoft's update as soon as possible.


Common Vulnerabilities and Exposures (CVE) Information:

The Common Vulnerabilities and Exposures (CVE) project has assigned
the following names to these issues.  These are candidates for
inclusion in the CVE list (http://cve.mitre.org), which standardizes
names for security problems.


        CVE-2006-2376

- -------Symantec Vulnerability Research Advisory Information-------

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- -------------Symantec Product Advisory Information-------------

To Report a Security Vulnerability in a Symantec Product:
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For general information on Symantec's Product Vulnerability
reporting and response:
http://www.symantec.com/security/

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- ---------------------------------------------------------------

Copyright (c) 2006 by Symantec Corp.
Permission to redistribute this alert electronically is granted
as long as it is not edited in any way unless authorized by
Symantec Consulting Services. Reprinting the whole or part of
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Disclaimer
The information in the advisory is believed to be accurate at the
time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS
condition. There are no warranties with regard to this information.
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