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Secunia Research: RealPlayer QCP Audio Content Parsing Buffer Overflow

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                     Secunia Research 27/08/2010

     - RealPlayer QCP Audio Content Parsing Buffer Overflow -

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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 

* RealPlayer SP 1.05

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 

"RealPlayer SP lets you download video from thousands of Websites  
free! Just click on the "download this video" button above the video 
you want. It's just that easy. Now you can watch your favorite videos 
anywhere, anytime."

Product Link:
http://www.real.com/realplayer/

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4) Description of Vulnerability

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

The vulnerability is caused by a boundary error in the parsing of QCP
audio content and can be exploited to cause a heap-based buffer via a 
specially crafted file containing overly large size values.

Successful exploitation allows execution of arbitrary code.

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5) Solution 

Update to RealPlayer SP version 1.1.5.

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6) Time Table 

23/02/2010 - Vendor notified.
25/02/2010 - Vendor response.
11/03/2010 - Vendor provides status update.
13/08/2010 - Vendor provides status update.
21/08/2010 - Vendor provides status update.
27/08/2010 - 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-2010-0120 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
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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/2010-8/

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

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