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

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

                 Secunia Research 29/10/2010

 - Adobe Shockwave Player "DEMX" Chunk Parsing Vulnerability -

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

• Adobe Shockwave Player 11.5.8.612

NOTE: Other versions may also be affected.

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

Rating: Highly critical
Impact: System compromise
Where: Remote

======================================================================
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/

======================================================================
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.

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

Update to version 11.5.9.615.

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

07/09/2010 - Vendor notified.
07/09/2010 - Vendor response.
26/10/2010 - Status update requested.
29/10/2010 - Public disclosure.

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

Discovered by Carsten Eiram, Secunia Research.

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

The Common Vulnerabilities and Exposures (CVE) project has assigned
CVE-2010-2582 for the vulnerability.

======================================================================
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/2010-114/

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

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