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Gentoo Linux Security Advisory                           GLSA 200606-30
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Kiax: Arbitrary code execution
      Date: June 30, 2006
      Bugs: #136099
        ID: 200606-30

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Synopsis
========

A security vulnerability in the iaxclient library could lead to the
execution of arbitrary code by a remote attacker.

Background
==========

Kiax is a graphical softphone supporting the IAX protocol (Inter
Asterisk eXchange), which allows PC users to make VoIP calls to
Asterisk servers.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  net-misc/kiax     < 0.8.5_p1                          >= 0.8.5_p1

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

The iax_net_read function in the iaxclient library fails to properly
handle IAX2 packets with truncated full frames or mini-frames. These
frames are detected in a length check but processed anyway, leading to
buffer overflows.

Impact
======

By sending a specially crafted IAX2 packet, an attacker could execute
arbitrary code with the permissions of the user running Kiax.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Kiax users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-misc/kiax-0.8.5_p1"

References
==========

  [ 1 ] CVE-2006-2923
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2923

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

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

  http://security.gentoo.org/glsa/glsa-200606-30.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 2006 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