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Gentoo Linux Security Advisory                           GLSA 200802-12
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http://security.gentoo.org/ 
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  Severity: Normal
     Title: xine-lib: User-assisted execution of arbitrary code
      Date: February 26, 2008
      Bugs: #209106, #208100
        ID: 200802-12

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Synopsis
=======
xine-lib is vulnerable to multiple buffer overflows when processing
FLAC and ASF streams.

Background
=========
xine-lib is the core library package for the xine media player.

Affected packages
================
    -------------------------------------------------------------------
     Package              /  Vulnerable  /                  Unaffected
    -------------------------------------------------------------------
  1  media-libs/xine-lib     < 1.1.10.1                    >= 1.1.10.1

Description
==========
Damian Frizza and Alfredo Ortega (Core Security Technologies)
discovered a stack-based buffer overflow within the open_flac_file()
function in the file demux_flac.c when parsing tags within a FLAC file
(CVE-2008-0486). A buffer overflow when parsing ASF headers, which is
similar to CVE-2006-1664, has also been discovered.

Impact
=====
A remote attacker could entice a user to play specially crafted FLAC or
ASF video streams with a player using xine-lib, potentially resulting
in the execution of arbitrary code with the privileges of the user
running the player.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All xine-lib users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/xine-lib-1.1.10.1"

References
=========
  [ 1 ] CVE-2006-1664
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1664 
  [ 2 ] CVE-2008-0486
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0486 

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

http://security.gentoo.org/glsa/glsa-200802-12.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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