[ GLSA 200804-13 ] Asterisk: Multiple vulnerabilities

[Robert Buchholz <rbu () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200804-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Asterisk: Multiple vulnerabilities
      Date: April 14, 2008
      Bugs: #200792, #202733, #213883
        ID: 200804-13

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Synopsis
========

Multiple vulnerabilities have been found in Asterisk allowing for SQL
injection, session hijacking and unauthorized usage.

Background
==========

Asterisk is an open source telephony engine and tool kit.

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

    -------------------------------------------------------------------
     Package            /  Vulnerable  /                    Unaffected
    -------------------------------------------------------------------
  1  net-misc/asterisk      < 1.2.27                         >= 1.2.27

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

Asterisk upstream developers reported multiple vulnerabilities:

* The Call Detail Record Postgres logging engine (cdr_pgsql) does not
  correctly escape the ANI and DNIS arguments before using them in SQL
  statements (CVE-2007-6170).

* When using database-based registrations ("realtime") and host-based
  authentication, Asterisk does not check the IP address when the
  username is correct and there is no password provided
  (CVE-2007-6430).

* The SIP channel driver does not correctly determine if
  authentication is required (CVE-2008-1332).

Impact
======

Remote authenticated attackers could send specially crafted data to
Asterisk to execute arbitrary SQL commands and compromise the
administrative database. Remote unauthenticated attackers could bypass
authentication using a valid username to hijack other user's sessions,
and establish sessions on the SIP channel without authentication.

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-1.2.27"

References
==========

  [ 1 ] CVE-2007-6170
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6170
  [ 2 ] CVE-2007-6430
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6430
  [ 3 ] CVE-2008-1332
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1332

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

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

  http://security.gentoo.org/glsa/glsa-200804-13.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
http://bugs.gentoo.org.

License
=======

Copyright 2008 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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