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

medium Nessus Plugin ID 79441

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Synopsis

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

Description

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.

Solution

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.

Plugin Details

Severity: Medium

ID: 79441

File Name: asterisk_ast_2014_017.nasl

Version: 1.11

Type: remote

Family: Misc.

Published: 11/25/2014

Updated: 4/11/2022

Configuration: Enable paranoid mode, Enable thorough checks

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2014-8417

Vulnerability Information

CPE: cpe:/a:digium:asterisk

Required KB Items: Settings/ParanoidReport, asterisk/sip_detected

Exploit Ease: No known exploits are available

Patch Publication Date: 11/20/2014

Vulnerability Publication Date: 11/20/2014

Reference Information

CVE: CVE-2014-8417

BID: 71228

Detections

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