Asterisk Remote Crash Vulnerability in Skinny Channel Driver (AST-2012-009)

This script is Copyright (C) 2012-2016 Tenable Network Security, Inc.

Synopsis :

A telephony application running on the remote host is affected by a
denial of service vulnerability.

Description :

According to the version in its SIP banner, the version of Asterisk
running on the remote host is potentially affected by a vulnerability
that could allow a remote attacker to crash the server. This issue
could be exploited when the attacker has a valid SCCP (Skinny) ID and
closes a connection when in certain call states. A NULL pointer is
left behind and can cause the server to crash when the pointer is
later dereferenced.

Note the fix for AST-2012-008 was incomplete.

See also :

Solution :

Upgrade to Asterisk 10.5.1 or apply the patches listed in the Asterisk

Risk factor :

Low / CVSS Base Score : 3.5
CVSS Temporal Score : 3.0
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 59714 ()

Bugtraq ID: 54017

CVE ID: CVE-2012-3553

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