GLSA 200501-07: xine-lib: Multiple overflows
Posted on: 01/06/2005 03:34 PM

A xine-lib security update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200501-07
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http://security.gentoo.org/
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Severity: Normal
Title: xine-lib: Multiple overflows
Date: January 06, 2005
Bugs: #74475
ID: 200501-07

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Synopsis
=======

xine-lib contains multiple overflows potentially allowing execution of arbitrary 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_rc8-r1 >= 1_rc8-r1
*>= 1_rc6-r1

Description
==========

Ariel Berkman discovered that xine-lib reads specific input data into an array without checking the input size in demux_aiff.c, making it vulnerable to a buffer overflow (CAN-2004-1300) . iDefense discovered that the PNA_TAG handling code in pnm_get_chunk() does not check if the input size is larger than the buffer size (CAN-2004-1187). iDefense also discovered that in this same function, a negative value could be given to an unsigned variable that specifies the read length of input data (CAN-2004-1188).

Impact
=====

A remote attacker could craft a malicious movie or convince a targeted user to connect to a malicious PNM server, which could result in the execution of arbitrary code with the rights of the user running any xine-lib frontend.

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

References
=========

[ 1 ] CAN-2004-1187
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1187
[ 2 ] CAN-2004-1188
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1188
[ 3 ] CAN-2004-1300
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1300
[ 4 ] iDefense Advisory

http://www.idefense.com/application/poi/display?id=176type=vulnerabilities
[ 5 ] iDefense Advisory

http://www.idefense.com/application/poi/display?id=177type=vulnerabilities
[ 6 ] Ariel Berkman Advisory
http://tigger.uic.edu/~jlongs2/holes/xine-lib.txt

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

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

http://security.gentoo.org/glsa/glsa-200501-07.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 2005 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/2.0


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