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[Full-Disclosure] Icecast 2.0.0 preauth overflow

From: ned (ndfelinemenace.org)
Date: Sun May 09 2004 - 07:56:32 CDT

There exists a remotely exploitable heap overflow in Icecast 2.0.0.
The bug exists in the handling of base64 Authorization request.
This bug was found in about 40 seconds during a HTTP audit of the web
component of Icecast with the fuzzer SMUDGE
(http://felinemenace.org/~nd/SMUDGE/)

People complained that the last Icecast bugs weren't preauth. This one is.
Attached is a simple python script to reproduce the bug on the Windows
platform. Our tests confirmed that some tweaking will crash linux version
although this was not verified by the Icecast team.

Vendor == notified.

On another note tis signifies the first release from the UBC.

thanks,
nd.

--
http://felinemenace.org/~nd

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