TITLE:
Icecast Basic Authorization Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA11578

VERIFY ADVISORY:
http://secunia.com/advisories/11578/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Icecast 2.x

DESCRIPTION:
ned has discovered a vulnerability in Icecast, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an out-of-bounds read error within
the web interface when handling Basic Authorization requests. This
can be exploited to crash the application by passing a specially
crafted, overly long string (about 3000 bytes) in a "Authorization:"
header.

The vulnerability has been confirmed in version 2.0.0 for Windows.
Other versions may also be affected.

SOLUTION:
Filter access to the service (default port 8000/TCP) in a firewall or
proxy server.

PROVIDED AND/OR DISCOVERED BY:
ned

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