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Date: Wed, 11 Aug 2010 17:41:43 +0200
From: Secunia Research <remove-vuln@...unia.com>
To: bugtraq@...urityfocus.com
Subject: Secunia Research: glpng PNG Processing Two Integer Overflow Vulnerabilities

====================================================================== 

                     Secunia Research 11/08/2010

    - glpng PNG Processing Two Integer Overflow Vulnerabilities -

====================================================================== 
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

====================================================================== 
1) Affected Software 

* glpng 1.45

NOTE: Other versions may also be affected.

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

Rating: Moderately critical
Impact: System access
Where:  Remote

====================================================================== 
3) Vendor's Description of Software 

"This is a library for OpenGL to load PNG graphics files as an OpenGL
texture as easily as possible. It also has a number of options for
generating the alpha channel and mipmaps.".

Product Link:
http://www.fifi.org/doc/libglpng-dev/glpng.html

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

Secunia Research has discovered two vulnerabilities in glpng, which
can be exploited by malicious people to compromise an application
using the library.

1) An integer overflow error within the "pngLoadRawF()" function in
glpng.c can be exploited to cause a heap-based buffer overflow by e.g.
tricking a user into opening a specially crafted PNG file in an
application using the library.

2) An integer overflow error within the "pngLoadF()" function in
glpng.c can be exploited to cause a heap-based buffer overflow by e.g.
tricking a user into opening a specially crafted PNG file in an
application using the library.

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

Do not load untrusted images using the library.

====================================================================== 
6) Time Table 

24/06/2010 - Vendor and vendor-sec notified.
11/08/2010 - Response on vendor-sec
11/08/2010 - Public disclosure.

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

Discovered by Secunia Research.

====================================================================== 
8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-1519 for the vulnerabilities.

====================================================================== 
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
database as a service to the security community and private 
individuals, who are interested in or concerned about IT-security.

http://secunia.com/advisories/

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
to see currently vacant positions:

http://secunia.com/corporate/jobs/

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/advisories/mailing_lists/

====================================================================== 
10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-87/

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

======================================================================

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