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                     Secunia Research 14/12/2010

    - Microsoft Office TIFF Image Converter Two Buffer Overflows -

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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 Converter Pack
* Microsoft Works 9

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  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 two vulnerabilities in Microsoft 
Office, which can be exploited by malicious people to compromise a 
user's system.

1) An input validation error in the TIFF Import/Export Graphic Filter
when copying certain data can be exploited to cause a heap-based 
buffer overflow via a specially crafted TIFF image.

2) Another input validation error in the TIFF Import/Export Graphic 
Filter when copying certain data after having encountered a specific 
error can be exploited to cause a heap-based buffer overflow via a 
specially crafted TIFF image.

Successful exploitation of the vulnerabilities may allow execution of 
arbitrary code when processing a TIFF image in an application using 
the graphics filter (e.g. opening the image in Microsoft Photo Editor
or importing it into an Office document).

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5) Solution 

Apply patches provided by MS10-105.

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6) Time Table 

07/07/2010 - Vendor notified about vulnerability #1.
08/07/2010 - Vendor notified about vulnerability #2.
08/07/2010 - Vendor response.
15/08/2010 - Vendor provides status update.
11/01/2010 - Status update requested.
11/01/2010 - Vendor provides status update (tentatively targetting 
             May 2010).
30/04/2010 - Vendor provides status update (slipped from May 2010 
             release and now tentatively targetting August 2010).
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.
14/12/200X - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-3947 for the vulnerabilities.

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9) About Secunia

Secunia offers vulnerability management solutions to corporate
customers with verified and reliable vulnerability intelligence
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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individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

Secunia believes that it is important to support the community and to
do active vulnerability research in order to aid improving the 
security and reliability of software in general:

http://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
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http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2009-30/

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

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