GLSA 200408-26: zlib: Denial of service vulnerability
Posted on: 08/27/2004 04:40 PM

A zlib update has been released for Gentoo Linux

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Gentoo Linux Security Advisory GLSA 200408-26
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http://security.gentoo.org/
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Severity: Normal
Title: zlib: Denial of service vulnerability
Date: August 27, 2004
Bugs: #61749
ID: 200408-26

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Synopsis
=======

The zlib library contains a Denial of Service vulnerability.

Background
=========

zlib is a general-purpose data-compression library.

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

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Package / Vulnerable / Unaffected
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1 sys-libs/zlib <= 1.2.1-r2 >= 1.2.1-r3

Description
==========

zlib contains a bug in the handling of errors in the "inflate()" and "inflateBack()" functions.

Impact
=====

An attacker could exploit this vulnerability to launch a Denial of Service attack on any application using the zlib library.

Workaround
=========

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

Resolution
=========

All zlib users should upgrade to the latest version:

# emerge sync

# emerge -pv ">=sys-libs/zlib-1.2.1-r3"
# emerge ">=sys-libs/zlib-1.2.1-r3"

You should also run revdep-rebuild to rebuild any packages that depend on older versions of zlib :

# revdep-rebuild

References
=========

[ 1 ] OpenPKG-SA-2004.038-zlib
http://www.openpkg.org/security/OpenPKG-SA-2004.038-zlib.html

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

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

http://security.gentoo.org/glsa/glsa-200408-26.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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