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TITLE:
Ventrilo Server Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA31466

VERIFY ADVISORY:
http://secunia.com/advisories/31466/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Ventrilo Server 3.x
http://secunia.com/product/19567/
Ventrilo Server 2.x
http://secunia.com/product/5609/

DESCRIPTION:
Luigi Auriemma and Andre Malm have reported a vulnerability in
Ventrilo Server, which can be exploited by malicious people to cause
a DoS (Denial of Service).

The vulnerability is caused due to a NULL-pointer dereference error
in the processing of packets received on TCP port 3784. This can be
exploited to cause a crash via a "type 0" packet having an incorrect
version, followed by a packet containing arbitrary data.

The vulnerability is reported in version 3.0.2. Other versions may
also be affected.

SOLUTION:
Restrict network access to trusted users.

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma and Andre Malm

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/ventrilobotomy-adv.txt

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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Please Note:
Secunia recommends that you verify all advisories you receive by
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Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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