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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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