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[ GLSA 201006-20 ] Asterisk: Multiple vulnerabilities
From: Alex Legler <a3li () gentoo org>
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 () gentoo org 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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