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[gentoo-announce] [ GLSA 201203-21 ] Asterisk: Multiple vulnerabilities

Posted on 28 March 2012
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 201203-21
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http://security.gentoo.org/
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Severity: High
Title: Asterisk: Multiple vulnerabilities
Date: March 28, 2012
Bugs: #408431
ID: 201203-21

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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 < 1.8.10.1 >= 1.8.10.1

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

* The "milliwatt_generate()" function in app_milliwatt.c is vulnerable
to a stack overrun (AST-2012-002).
* The "ast_parse_digest()" function in utils.c is vulnerable to a
stack-based buffer overflow (AST-2012-003).

Impact
======
A remote unauthenticated attacker could execute arbitrary code 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-1.8.10.1"

References
==========
[ 1 ] AST-2012-002
http://downloads.asterisk.org/pub/security/AST-2012-002.txt
[ 2 ] AST-2012-003
http://downloads.asterisk.org/pub/security/AST-2012-003.txt
[ 3 ] CVE-2012-1183
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1183
[ 4 ] CVE-2012-1184
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1184

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

http://security.gentoo.org/glsa/glsa-201203-21.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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