Secunia Research: Microsoft Office BMP Image Colour Handling Integer Overflow

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                 Secunia Research 14/10/2009

• Microsoft Office BMP Image Colour Handling Integer Overflow -

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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

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

The vulnerability is caused due to an integer overflow when processing
the number of colours used in a bitmap image. This can be exploited
to cause a heap-based buffer overflow via a specially crafted bitmap
image.

Successful exploitation may allow execution of arbitrary code.

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5) Solution

Apply patches.

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6) Time Table

15/08/2008 - Vendor notified.
15/08/2008 - Vendor response.
21/08/2008 - Vendor provides status update.
04/09/2008 - Additional information provided to the vendor.
04/09/2008 - Vendor response.
17/09/2008 - Additional information provided to the vendor.
26/09/2008 - Additional information provided to the vendor.
26/09/2008 - Vendor response.
16/01/2009 - Vendor provides status update.
20/02/2009 - Vendor provides status update.
24/04/2009 - Vendor provides status update.
14/10/2009 - 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-2009-2518 for the vulnerability.

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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
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/2008-37/

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

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