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Gentoo Linux Security Advisory                           GLSA 200804-17
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Speex: User-assisted execution of arbitrary code
      Date: April 17, 2008
      Bugs: #217715
        ID: 200804-17

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Synopsis
========

Improper input validation in Speex might lead to array indexing
vulnerabilities in multiple player applications.

Background
==========

Speex is an audio compression format designed for speech that is free
of patent restrictions.

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

    -------------------------------------------------------------------
     Package           /    Vulnerable    /                 Unaffected
    -------------------------------------------------------------------
  1  media-libs/speex     < 1.2_beta3_p2               >= 1.2_beta3_p2

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

oCERT reported that the Speex library does not properly validate the
"mode" value it derives from Speex streams, allowing for array indexing
vulnerabilities inside multiple player applications. Within Gentoo,
xine-lib, VLC, gst-plugins-speex from the GStreamer Good Plug-ins,
vorbis-tools, libfishsound, Sweep, SDL_sound, and speexdec were found
to be vulnerable.

Impact
======

A remote attacker could entice a user to open a specially crafted Speex
file or network stream with an application listed above. This might
lead to the execution of arbitrary code with privileges of the user
playing the file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Speex users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose
 ">=media-libs/speex-1.2_beta3_p2"

References
==========

  [ 1 ] CVE-2008-1686
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1686

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

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

  http://security.gentoo.org/glsa/glsa-200804-17.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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