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Asterisk Project Security Advisory - AST-2014-006

Asterisk Project Security Advisory - AST-2014-006
Posted Jun 13, 2014
Authored by Jonathan Rose, Corey Farrell | Site asterisk.org

Asterisk Project Security Advisory - Manager users can execute arbitrary shell commands with the MixMonitor manager action. Asterisk does not require system class authorization for a manager user to use the MixMonitor action, so any manager user who is permitted to use manager commands can potentially execute shell commands as the user executing the Asterisk process.

tags | advisory, arbitrary, shell
advisories | CVE-2014-4046
SHA-256 | 930cf84fa176bf5c4db20b34cce8c5d33a35ed70742265a86ef2b9f3ab699974

Asterisk Project Security Advisory - AST-2014-006

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               Asterisk Project Security Advisory - AST-2014-006

Product Asterisk
Summary Asterisk Manager User Unauthorized Shell Access
Nature of Advisory Permission Escalation
Susceptibility Remote Authenticated Sessions
Severity Minor
Exploits Known No
Reported On April 9, 2014
Reported By Corey Farrell
Posted On June 12, 2014
Last Updated On June 12, 2014
Advisory Contact Jonathan Rose < jrose AT digium DOT com >
CVE Name CVE-2014-4046

Description Manager users can execute arbitrary shell commands with the
MixMonitor manager action. Asterisk does not require system
class authorization for a manager user to use the
MixMonitor action, so any manager user who is permitted to
use manager commands can potentially execute shell commands
as the user executing the Asterisk process.

Resolution Upgrade to a version with the patch integrated, apply the
patch, or do not allow users who should not have permission
to run shell commands to use AMI.

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

Corrected In
Product Release
Asterisk Open Source 11.10.1, 12.3.1
Certified Asterisk 11.6-cert3

Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2014-006-11.diff Asterisk
11
http://downloads.asterisk.org/pub/security/AST-2014-006-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2014-006-11.6.diff Certified
Asterisk
11.6

Links https://issues.asterisk.org/jira/browse/ASTERISK-23609

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This document may be superseded by later versions; if so, the latest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-2014-006.pdf and
http://downloads.digium.com/pub/security/AST-2014-006.html

Revision History
Date Editor Revisions Made
April 23, 2014 Jonathan Rose Document Creation
June 12, 2014 Matt Jordan Added CVE

Asterisk Project Security Advisory - AST-2014-006
Copyright (c) 2014 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
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