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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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