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Secunia Research: Gimp BMP Image Parsing Integer Overflow Vulnerability

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                     Secunia Research 12/11/2009

      - Gimp BMP Image Parsing Integer Overflow 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 

* Gimp 2.6.7

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Moderately Critical
Impact: System Access
Where:  Remote

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3) Vendor's Description of Software 

"GIMP is the GNU Image Manipulation Program. It is a freely
distributed piece of software for such tasks as photo retouching,
image composition and image authoring. It works on many operating 
systems, in many languages.".

Product Link:
http://www.gimp.org/

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4) Description of Vulnerability

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

The vulnerability is caused by an integer overflow error within the
"ReadImage()" function in plug-ins/file-bmp/bmp-read.c. This can be
exploited to cause a heap-based buffer overflow by e.g. tricking a
user into opening a specially crafted BMP file.

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5) Solution 

Fixed in the GIT repository.

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6) Time Table 

02/11/2009 - Vendor notified.
02/11/2009 - Vendor response.
09/11-2009 - Fixed in the GIT repository.
12/11/2009 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2009-1570 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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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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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/2009-42/

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

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