GLSA 200408-18: xine-lib: VCD MRL buffer overflow
Posted on: 08/18/2004 03:16 AM

A xine-lib update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200408-18
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http://security.gentoo.org/
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Severity: Normal
Title: xine-lib: VCD MRL buffer overflow
Date: August 17, 2004
Bugs: #59948
ID: 200408-18

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Synopsis
=======

xine-lib contains an exploitable buffer overflow in the VCD handling code

Background
=========

xine-lib is a multimedia library which can be utilized to create multimedia frontends.

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

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Package / Vulnerable / Unaffected
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1 media-libs/xine-lib <= 1_rc5-r2 >= 1_rc5-r3

Description
==========

xine-lib contains a bug where it is possible to overflow the vcd://input source identifier management buffer through carefully crafted playlists.

Impact
=====

An attacker may construct a carefully-crafted playlist file which will cause xine-lib to execute arbitrary code with the permissions of the user. In order to conform with the generic naming standards of most Unix-like systems, playlists can have extensions other than .asx (the standard xine playlist format), and made to look like another file (MP3, AVI, or MPEG for example). If an attacker crafts a playlist with a valid header, they can insert a VCD playlist line that can cause a buffer overflow and possible shellcode execution.

Workaround
=========

There is no known workaround at this time. All users are encouraged to upgrade to the latest available version of xine-lib.

Resolution
=========

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

# emerge sync

# emerge -pv ">=media-libs/xine-lib-1_rc5-r3"
# emerge ">=media-libs/xine-lib-1_rc5-r3"

References
=========

[ 1 ] Open Security Advisory
http://www.open-security.org/advisories/6

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

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

http://security.gentoo.org/glsa/glsa-200408-18.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 2004 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/1.0


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