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Date: Mon, 12 Dec 2011 14:50:26 +0100
From: Secunia Research <remove-vuln@...unia.com>
To: bugtraq@...urityfocus.com
Subject: Secunia Research: Winamp AVI Parsing Two Integer Overflow Vulnerabilities

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

                     Secunia Research 12/12/2011

    - Winamp AVI 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 

* Winamp 5.622

NOTE: Prior versions may also be affected.

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

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

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

"The way you listen, watch, manage and sync your media. Winamp is for
people who like to customize, tinker and tweak: offering the widest
range of extensions, skins, and services to add to your listening
experience."

Product Link:
http://www.winamp.com/

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

Secunia Research has discovered two vulnerabilities in Winamp, which
can be exploited by malicious people to compromise a user's system.

1) An integer overflow error in the in_avi.dll plugin when allocating
memory using the number of streams header value can be exploited to
cause a heap-based buffer overflow via a specially crafted AVI file.

2) An integer overflow error in the in_avi.dll plugin when allocating
memory using the RIFF INFO chunk's size value can be exploited to
cause a heap-based buffer overflow via a specially crafted AVI file.

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

Update to version 5.623.

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

16/11/2011 - Vendor notified.
16/11/2011 - Vendor response.
12/12/2011 - Vendor released fixed version.

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

Discovered by Dmitriy Pletnev, Secunia Research.

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

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2011-3834 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/2011-81/

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

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

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