Asterisk PJSIP Channel Driver Options DoS (AST-2014-003)

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The version of Asterisk installed on the remote host may be 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 denial of
service vulnerability.

A flaw exists in the PJSIP channel driver when the 'quality_frequency'
configuration is enabled on an AOR when the SIP server's challenges for
authentication challenges of the 'OPTIONS' request. A remote attacker
could use a specially crafted request to crash the program.

Note that Nessus has not tested for this issue, but instead has relied
only on the application's self-reported version number.

See also :

http://www.nessus.org/u?0688704f
http://downloads.asterisk.org/pub/security/AST-2014-003.html
https://issues.asterisk.org/jira/browse/ASTERISK-23210

Solution :

Upgrade to Asterisk 12.1.1 or apply the appropriate patch listed in the
Asterisk advisory.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Misc.

Nessus Plugin ID: 73021 ()

Bugtraq ID: 66104

CVE ID: CVE-2014-2288