Secunia Research: imlib2 "IMAGE_DIMENSIONS_OK()" Logic Error

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                     Secunia Research 21/04/2010

           - imlib2 "IMAGE_DIMENSIONS_OK()" Logic Error -

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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 

* imlib2 1.4.3

NOTE: Prior versions are not 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 

"Imlib 2 is the successor to Imlib.".

Product Link:
http://enlightenment.org/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in imlib2, which can
be exploited by malicious people to compromise an application using
the library.

The vulnerability is caused by a logic error within the 
"IMAGE_DIMENSIONS_OK()" macro in src/lib/image.h. This can be 
exploited to cause heap-based buffer overflows via e.g. specially
crafted ARGB, XPM, and BMP image files.

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5) Solution 

Fixed in the SVN repository.

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6) Time Table 

07/04/2010 - Vendor notified.
08/04/2010 - Vendor response.
21/04/2010 - 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-2010-0991 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/2010-54/

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

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