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[gentoo-announce] [ GLSA 201206-05 ] Asterisk: Multiple vulnerabilities

Posted on 21 June 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201206-05
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http://security.gentoo.org/
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Severity: Normal
Title: Asterisk: Multiple vulnerabilities
Date: June 21, 2012
Bugs: #413353, #418189, #418191
ID: 201206-05

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Synopsis
========
Multiple vulnerabilities in Asterisk might allow remote attackers to
execute arbitrary code.

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

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/asterisk < 1.8.12.1 >= 1.8.12.1

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

* An error in manager.c allows shell access through the MixMonitor
application, GetVar, or Status (CVE-2012-2414).
* An error in chan_skinny.c could cause a heap-based buffer overflow
(CVE-2012-2415).
* An error in chan_sip.c prevents Asterisk from checking if a channel
exists before connected line updates (CVE-2012-2416).
* An error in chan_iax2.c may cause an invalid pointer to be called
(CVE-2012-2947).
* chan_skinny.c contains a NULL pointer dereference (CVE-2012-2948).

Impact
======
A remote attacker could execute arbitrary code with the privileges of
the process or cause a Denial of Service condition.

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-1.8.12.1"

References
==========
[ 1 ] CVE-2012-2414
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2414
[ 2 ] CVE-2012-2415
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2415
[ 3 ] CVE-2012-2416
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2416
[ 4 ] CVE-2012-2947
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2947
[ 5 ] CVE-2012-2948
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-2948

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

http://security.gentoo.org/glsa/glsa-201206-05.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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