SHOUTcast 1.9.8 DNAS Relay Server Buffer Overflow

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 Winamp media player running the SHOUTcast Radio DSP plug-in.".

Product Link:
http://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

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10) Verification

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

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