Secunia Research: Microsoft Office TIFF Image Converter Two Buffer Overflows

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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
database as a service to the security community and private
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
to see currently vacant positions:

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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