Secunia Research: Microsoft Office PICT Filter Integer Truncation Vulnerability

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                     Secunia Research 14/12/2010

   - Microsoft Office PICT Filter Integer Truncation Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Vendor's Description of Software.....................................3
Description of Vulnerability.........................................4
Solution.............................................................5
Time Table...........................................................6
Credits..............................................................7
References...........................................................8
About Secunia........................................................9
Verification........................................................10

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1) Affected Software 

* Microsoft Office XP SP3
* Microsoft Office 2003 SP3
* Microsoft Office Converter Pack

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately critical
Impact: System access
Where:  From remote

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3) Vendor's Description of Software 

"Microsoft Office is a complete suite of productivity and database
software that will help you save time and stay organized".

Product Link:
http://office.microsoft.com/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Microsoft Office,
which can be exploited by malicious people to compromise a user's 
system.

The vulnerability is caused by an integer truncation error in the 
PICT import filter (PICTIM32.FLT). This can be exploited to cause a
heap-based buffer overflow by e.g. tricking a user into importing a
specially crafted PICT file.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Apply patches provided by MS10-105.

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6) Time Table

14/07/2009 - Vendor notified.
14/07/2009 - Vendor response.
20/08/2009 - Vendor provides status update.
24/09/2009 - Vendor provides status update (scheduled for fall 2009).
29/10/2009 - Vendor provides status update (scheduled for March 2010).
28/05/2010 - Vendor provides status update (slipped from March 2010 
             release and now scheduled for August 2010).
02/06/2010 - Vendor provides status update.
23/07/2010 - Vendor provides status update (slipped from August 2010 
             release and now scheduled for November 2010).
04/11/2010 - Vendor provides status update (slipped from November 2010
             release and now scheduled for December 2010).
08/11/2010 - Vendor informed that December is the final deadline.
14/12/2010 - Public disclosure.

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7) Credits 

Discovered by Alin Rad Pop, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2010-3946 for the vulnerability.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
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relevant to their specific system configuration:

http://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-34/

Complete list of vulnerability reports published by Secunia Research:
http://secunia.com/secunia_research/

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