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                     Secunia Research 25/02/2009

          - SHOUTcast DNAS Relay Server 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 

* SHOUTcast 1.9.8

NOTE: Other versions may also be affected.

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2) Severity 

Rating: Less critical
Impact: System access
Where:  From remote

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3) Vendor's Description of Software 

"The SHOUTcast Radio Distributed Network Audio Software (DNAS)
is a software application that runs on your server attached to the
Internet or an IP network and is responsible for receiving audio
from a broadcaster such as your Win amp media player running the
SHOUTcast Radio DSP plug-in.".

Product Link:
https://www.shoutcast.com/download

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4) Description of Vulnerability

Secunia Research has discovered a vulnerability in SHOUTcast DNAS,
which can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error when receiving
data from a relay master server. This can be exploited to overflow
a static buffer by tricking a SHOUTcast admin into setting up a
server to act as relay for a malicious server.

Successful exploitation allows to e.g. overwrite the password of the
web administration interface.

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5) Solution 

Relay trusted servers only.

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6) Time Table 

09/01/2009 - Vendor notified.
04/02/2009 - Requested status update from vendor.
25/02/2009 - Public disclosure.

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7) Credits 

Discovered by Stefan Cornelius, Secunia Research.

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8) References

The Common Vulnerabilities and Exposures (CVE) project has not yet
assigned a CVE 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:

https://secunia.com/advisories/business_solutions/

Secunia also provides a publicly accessible and comprehensive advisory
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Secunia believes that it is important to support the community and to
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https://secunia.com/secunia_research/

Secunia regularly hires new skilled team members. Check the URL below
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Secunia offers a FREE mailing list called Secunia Security Advisories:

https://secunia.com/advisories/mailing_lists/

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10) Verification 

Please verify this advisory by visiting the Secunia website:
https://secunia.com/secunia_research/2008-62/

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

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