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Secunia Research: OpenSG Radiance RGBE Buffer Overflow Vulnerability

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                     Secunia Research 20/01/2009

        - OpenSG Radiance RGBE Buffer 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 

* OpenSG 1.8.0

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 

"OpenSG is a portable scenegraph system to create realtime graphics
programs, e.g. for virtual reality applications".

Product Link:
http://opensg.vrsource.org/trac

====================================================================== 
4) Description of Vulnerability

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

The vulnerability is caused due to a boundary error within the
"HDRImageFileType::checkHDR()" function in Source/System/Image/
OSGHDRImageFileType.cpp, which can be exploited to cause a stack-based
buffer overflow by e.g. tricking a user into opening a specially 
crafted Radiance RGBE (*.hdr) file.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Fixed in the CVS repository.

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6) Time Table 

09/01/2009 - Vendor notified.
13/01/2009 - Vendor response.
16/01/2009 - Vendor notified about incomplete fix.
18/01/2009 - Vendor response.
20/01/2009 - 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 not yet
assigned a CVE 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/2008-60/

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

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