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Secunia Research: Adobe Shockwave Player "pamm" Chunk Parsing Vulnerability

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                     Secunia Research 29/10/2010

     - Adobe Shockwave Player "pamm" Chunk Parsing 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 

* Adobe Shockwave Player 11.5.8.612

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Highly critical
Impact: System compromise
Where:  Remote

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3) Vendor's Description of Software 

"Over 450 million Internet-enabled desktops have installed Adobe 
Shockwave Player. These people now have access to some of the best the
Web has to offer - including dazzling 3D games and entertainment, 
interactive product demonstrations, and online learning applications."

Product Link:
http://www.adobe.com/products/shockwaveplayer/

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in Adobe Shockwave
Player, which may be exploited by malicious people to compromise a
user's system.

The vulnerability is caused by a function in dirapi.dll not validating
the size and number of sub-chunks inside a "pamm" chunk during initial
parsing of the sub-chunks. This can be exploited to corrupt memory 
outside the bounds of a buffer allocated for the "pamm" data via a 
specially crafted Director file.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Update to version 11.5.9.615.

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6) Time Table 

03/09/2010 - Vendor notified.
03/09/2010 - Vendor response.
26/10/2010 - Vendor provides status update.
29/10/2010 - Public disclosure.

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7) Credits 

Discovered by Carsten Eiram, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has assigned 
CVE-2010-2581 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
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/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-113/

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

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