Secunia Research: RealPlayer QCP Sample Chunk Parsing Buffer Overflow

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                     Secunia Research 18/10/2010

       - RealPlayer QCP Sample Chunk 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 1.0.5

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 SP, 
which can be exploited by malicious people to compromise a user's 
system.

The vulnerability is caused by missing input validation in the 
handling of sample chunks when parsing QCP audio content. This can be 
exploited to cause a heap-based buffer overflow.

Successful exploitation may allow execution of arbitrary code.

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5) Solution 

Update to RealPlayer SP 1.1.5 or RealPlayer Enterprise 2.1.3.

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6) Time Table 

25/02/2010 - Vendor notified.
11/03/2010 - Vendor provides status update.
17/08/2010 - Vendor provides status update.
30/09/2010 - Vendor provides status update.
08/10/2010 - Vendor provides status update.
18/10/2010 - 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-2010-2578 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/2010-13/

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

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