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[gentoo-announce] [ GLSA 201209-15 ] Asterisk: Multiple vulnerabilities

Posted on 27 September 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201209-15
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http://security.gentoo.org/
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Severity: Normal
Title: Asterisk: Multiple vulnerabilities
Date: September 26, 2012
Bugs: #425050, #433750
ID: 201209-15

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Synopsis
========
Multiple vulnerabilities have been found in Asterisk, the worst of
which may allow execution of arbitrary code.

Background
==========
Asterisk is an open source telephony engine and toolkit.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/asterisk < 1.8.15.1 >= 1.8.15.1

Description
===========
Multiple vulnerabilities have been found in Asterisk:

* An error in manager.c allows shell access (CVE-2012-2186).
* An error in Asterisk could cause all RTP ports to be exhausted
(CVE-2012-3812).
* A double-free error could occur when two parties attempt to
manipulate the same voicemail account simultaneously (CVE-2012-3863).
* Asterisk does not properly implement certain ACL rules
(CVE-2012-4737).

Impact
======
A remote, authenticated attacker could execute arbitrary code with the
privileges of the process, cause a Denial of Service condition, or
bypass outbound call restrictions.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All Asterisk users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/asterisk-1.8.15.1"

References
==========
[ 1 ] CVE-2012-2186
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2186
[ 2 ] CVE-2012-3812
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3812
[ 3 ] CVE-2012-3863
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-3863
[ 4 ] CVE-2012-4737
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-4737

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201209-15.xml

Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


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