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To: gentoo-announce@g.o
From: Alex Legler <a3li@g.o>
Subject: [ GLSA 201006-20 ] Asterisk: Multiple vulnerabilities
Date: Fri, 4 Jun 2010 07:15:14 +0200
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Gentoo Linux Security Advisory                           GLSA 201006-20
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Asterisk: Multiple vulnerabilities
      Date: June 04, 2010
      Bugs: #281107, #283624, #284892, #295270
        ID: 201006-20

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Synopsis
========

Multiple vulnerabilities in Asterisk might allow remote attackers to
cause a Denial of Service condition, or conduct other attacks.

Background
==========

Asterisk is an open source telephony engine and toolkit.

Affected packages
=================

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  net-misc/asterisk      < 1.2.37                         >= 1.2.37

Description
===========

Multiple vulnerabilities have been reported in Asterisk:

* Nick Baggott reported that Asterisk does not properly process
  overly long ASCII strings in various packets (CVE-2009-2726).

* Noam Rathaus and Blake Cornell reported a flaw in the IAX2 protocol
  implementation (CVE-2009-2346).

* amorsen reported an input processing error in the RTP protocol
  implementation (CVE-2009-4055).

* Patrik Karlsson reported an information disclosure flaw related to
  the REGISTER message (CVE-2009-3727).

* A vulnerability was found in the bundled Prototype JavaScript
  library, related to AJAX calls (CVE-2008-7220).

Impact
======

A remote attacker could exploit these vulnerabilities by sending a
specially crafted package, possibly causing a Denial of Service
condition, or resulting in information disclosure.

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-1.2.37"

NOTE: This is a legacy GLSA. Updates for all affected architectures are
available since January 5, 2010. It is likely that your system is
already no longer affected by this issue.

References
==========

  [ 1 ] CVE-2009-2726
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2726
  [ 2 ] CVE-2009-2346
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2346
  [ 3 ] CVE-2009-4055
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-4055
  [ 4 ] CVE-2009-3727
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3727
  [ 5 ] CVE-2008-7220
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-7220

Availability
============

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

  http://security.gentoo.org/glsa/glsa-201006-20.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@g.o or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2010 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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