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Secunia Research: ksquirrel-libs Radiance RGBE Buffer Overflows

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                     Secunia Research 25/02/2009

         - ksquirrel-libs Radiance RGBE 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 

* ksquirrel-libs 0.8.0.

NOTE: Other versions may also be affected.

====================================================================== 
2) Severity 

Rating: Moderately critical
Impact: System access
Where:  From remote

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3) Vendor's Description of Software 

"ksquirrel-libs is a set of image codecs for KSquirrel. It is written
on pure C++, so you can simply use it in any other project. At this
time ksquirrel-libs supports 57 image formats.".

Product Link:
http://ksquirrel.sourceforge.net/subprojects.php

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4) Description of Vulnerability

Secunia Research has discovered some vulnerabilities in 
ksquirrel-libs, which can be exploited by malicious people to 
ompromise an application using the library.

The vulnerabilities are caused due to boundary errors within the
"mt_codec::getHdrHead()" function in kernel/kls_hdr/fmt_codec_hdr.cpp,
which can be exploited to cause stack-based buffer overflows by e.g.
tricking a user into opening a specially crafted Radiance RGBE 
(*.hdr) file.

====================================================================== 
5) Solution 

Do not open untrusted Radiance RGBE images in an application using
ksquirrel-libs.

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6) Time Table 

09/01/2009 - Vendor notified.
04/02/2009 - Requested status update from vendor.
25/02/2009 - Public disclosure.

====================================================================== 
7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2008-5263 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/2008-63/

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

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