Secunia Research: Gimp PSD Plugin Integer Overflow Vulnerability

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                     Secunia Research 03/07/2007

           - Gimp PSD Plugin 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 2.2.15

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 compromise a user's system.

The vulnerability is caused due to an integer overflow within the
function "seek_to_and_unpack_pixeldata()" in plug-ins/common/psd.c.
This can be exploited to cause a heap-based buffer overflow by
tricking a user into opening a specially crafted PSD file with large
width or height values.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Fixed in the SVN repository.

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6) Time Table 

14/06/2007 - Vendor notified.
16/06/2007 - Vendor response.
03/07/2007 - 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-2007-2949 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2007-63/

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

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