Asterisk PJSIP Channel Driver DoS (AST-2014-009)

Low Nessus Plugin ID 77858


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


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 in the PJSIP channel driver. This is due to a flaw in the 'res_pjsip_pubsub' module. The issue is triggered when handling a SIP SUBSCRIBE request with unexpected mixes of headers for a given event package. By using a specially crafted request, a remote attacker could exploit this to crash the application.

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


Upgrade to Asterisk 12.5.1 or apply the appropriate patch listed in the Asterisk advisory.

See Also

Plugin Details

Severity: Low

ID: 77858

File Name: asterisk_ast_2014_009.nasl

Version: $Revision: 1.8 $

Type: remote

Family: Misc.

Published: 2014/09/25

Modified: 2017/04/28

Dependencies: 63202

Risk Information

Risk Factor: Low


Base Score: 2.1

Temporal Score: 1.8

Vector: CVSS2#AV:N/AC:H/Au:S/C:N/I:N/A:P

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: asterisk/sip_detected, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2014/09/18

Vulnerability Publication Date: 2014/09/18

Reference Information

CVE: CVE-2014-6609

BID: 69972

OSVDB: 111730