Asterisk Project Security Advisory – AST-2014-018

Product Asterisk
Summary AMI permission escalation through DB dialplan
function
Nature of Advisory Permission Escalation
Susceptibility Remote Authenticated Sessions
Severity Minor
Exploits Known No
Reported On November 17, 2014
Reported By Gareth Palmer
Posted On 20 November, 2014
Last Updated On November 20, 2014
Advisory Contact Kevin Harwell
CVE Name Pending

Description The DB dialplan function when executed from an external
protocol (for instance AMI), could result in a privilege
escalation.

Resolution Asterisk now inhibits the DB function from being executed
from an external interface if the live_dangerously option is
set to no.

Affected Versions
Product Release
Series
Certified Asterisk 1.8 All versions
Certified Asterisk 11.6 All versions
Asterisk Open Source 1.8.x All versions
Asterisk Open Source 11.x All versions
Asterisk Open Source 12.x All versions
Asterisk Open Source 13.x All versions

Corrected In
Product Release
Asterisk Open Source 1.8.32.1,11.14.1, 12.7.1, 13.0.1
Certified Asterisk 1.8.28-cert3,11.6-cert8

Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2014-018-1.8.28.diff Certified
Asterisk
1.8
http://downloads.asterisk.org/pub/security/AST-2014-018-11.6.diff Certified
Asterisk
11.6
http://downloads.asterisk.org/pub/security/AST-2014-018-1.8.diff Asterisk
1.8
http://downloads.asterisk.org/pub/security/AST-2014-018-11.diff Asterisk
11
http://downloads.asterisk.org/pub/security/AST-2014-018-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2014-018-13.diff Asterisk
13

Links https://issues.asterisk.org/jira/browse/ASTERISK-24534

Asterisk Project Security Advisories are posted at
http://www.asterisk.org/security

This document may be superseded by later versions; if so, the latest
version will be posted at
http://downloads.digium.com/pub/security/AST-2014-018.pdf and
http://downloads.digium.com/pub/security/AST-2014-018.html

Revision History
Date Editor Revisions Made
November 18, 2014 Kevin Harwell Initial advisory created

Asterisk Project Security Advisory – AST-2014-018
Copyright (c) 2014 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.