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Winamp AVI Processing Two Integer Overflows

Winamp AVI Processing Two Integer Overflows
Posted Dec 12, 2011
Authored by Dmitriy Pletnev | Site secunia.com

Secunia Research has discovered two vulnerabilities in Winamp version 5.622, which can be exploited by malicious people to compromise a user's system. 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. 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.

tags | advisory, overflow, vulnerability
advisories | CVE-2011-3834
SHA-256 | 86c5793878c1f8e344414a71231e48221830efa8d32e47599710d676f1c3ff5d

Winamp AVI Processing Two Integer Overflows

Change Mirror Download
====================================================================== 

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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