An AMD64 x86 emulation base libraries security update is available for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200507-28
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http://security.gentoo.org/
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Severity: High
Title: AMD64 x86 emulation base libraries: Buffer overflow
Date: July 30, 2005
Bugs: #100686
ID: 200507-28

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Synopsis
=======

The x86 emulation base libraries for AMD64 contain a vulnerable version of zlib which could potentially lead to execution of arbitrary code.



Background
=========

The x86 emulation base libraries for AMD64 emulate the x86 (32-bit) architecture on the AMD64 (64-bit) architecture.

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

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Package / Vulnerable / Unaffected
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1 emul-linux-x86-baselibs < 2.2 >= 2.2
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# Package 1 only applies to AMD64 users.

Description
==========

Earlier versions of emul-linux-x86-baselibs contain a vulnerable version of zlib, which may lead to a buffer overflow.

Impact
=====

By creating a specially crafted compressed data stream, attackers can overwrite data structures for applications that use the x86 emulation base libraries for AMD64, resulting in a Denial of Service and potentially arbitrary code execution.

Workaround
=========

There is no known workaround at this time.

Resolution
=========

All AMD64 x86 emulation base libraries users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=app-emulation/emul-linux-x86-baselibs-2.2"

References
=========

[ 1 ] GLSA 200507-05
http://www.gentoo.org/security/en/glsa/glsa-200507-05.xml
[ 2 ] GLSA 200507-19
http://www.gentoo.org/security/en/glsa/glsa-200507-19.xml
[ 3 ] CAN-2005-1849
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1849
[ 4 ] CAN-2005-2096
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096

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

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

http://security.gentoo.org/glsa/glsa-200507-28.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