Date: Thu, 06 Jan 2005 13:41:50 +0100
From: Thierry Carrez <koon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200501-07 ] xine-lib: Multiple overflows
Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com,
security-alerts@linuxsecurity.com
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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
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
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=176&type=vulnerabilities
[ 5 ] iDefense Advisory
http://www.idefense.com/application/poi/display?id=177&type=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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