Asterisk ConfBridge 'dialplan' Privilege Escalation (AST-2014-017)

High Nessus Plugin ID 79441


A telephony application running on the remote host is affected by a privilege escalation vulnerability.


According to the version in its SIP banner, the version of Asterisk running on the remote host is potentially affected by a privilege escalation vulnerability in the ConfBridge 'dialplan' function that is triggered when executed from an external protocol. This could allow a remote, authenticated attacker to escalate privileges. Additionally, the 'ConfbridgeStartRecord' AMI action could be leveraged to execute arbitrary system commands.

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


Upgrade to Asterisk 11.14.1 / 12.7.1 / 13.0.1 / 11.6-cert8 or apply the appropriate patch listed in the Asterisk advisory.

See Also

Plugin Details

Severity: High

ID: 79441

File Name: asterisk_ast_2014_017.nasl

Version: $Revision: 1.8 $

Type: remote

Family: Misc.

Published: 2014/11/25

Modified: 2016/11/11

Dependencies: 63202

Risk Information

Risk Factor: High


Base Score: 8.5

Temporal Score: 6.3

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

Temporal Vector: CVSS2#E:U/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: 2014/11/20

Vulnerability Publication Date: 2014/11/20

Reference Information

CVE: CVE-2014-8417

BID: 71228

OSVDB: 114926