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

[Secunia Research <remove-vuln@xxxxxxxxxxx>]

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                     Secunia Research 29/10/2010

     - Adobe Shockwave Player "DEMX" 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 logic error in TextXtra.x32 when 
parsing "DEMX" chunks. This can be exploited to cause a heap-based 
buffer overflow via a specially crafted Director file as a function 
does not reallocate a buffer to contain a section of data as expected, 
but another function to still copy chunk data into the insufficiently 
sized buffer.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Update to version 11.5.9.615.

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6) Time Table 

07/09/2010 - Vendor notified.
07/09/2010 - Vendor response.
26/10/2010 - Status update requested.
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-2010-2582 for the vulnerability.

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9) About Secunia

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10) Verification 

Please verify this advisory by visiting the Secunia website:
http://secunia.com/secunia_research/2010-114/

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

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