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Gentoo Linux Security Advisory 200507-28

Gentoo Linux Security Advisory 200507-28
Posted Aug 5, 2005
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200507-28 - Earlier versions of emul-linux-x86-baselibs contain a vulnerable version of zlib, which may lead to a buffer overflow. Versions less than 2.2 are affected.

tags | advisory, overflow, x86
systems | linux, gentoo
advisories | CVE-2005-1849, CVE-2005-2096
SHA-256 | 089895ad37abaac24f0dad3f6afe89af8a82368d5cba6cecff5434588a1426fb

Gentoo Linux Security Advisory 200507-28

Change Mirror Download
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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
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 emul-linux-x86-baselibs < 2.2 >= 2.2
-------------------------------------------------------------------
# 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

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