Date: Fri, 6 Oct 2006 20:01:00 +0200
From: Raphael Marichez <falco@gentoo.org.>
To: gentoo-announce@gentoo.org
Subject: [ GLSA 200610-03 ] ncompress: Buffer Underflow
Message-ID: <20061006180100.GA30631@falco.falcal.net.>
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Organization: Gentoo Linux Security Team
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Gentoo Linux Security Advisory GLSA 200610-03
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http://security.gentoo.org/
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Severity: Normal
Title: ncompress: Buffer Underflow
Date: October 06, 2006
Bugs: #141728
ID: 200610-03
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Synopsis
========
A buffer underflow vulnerability has been reported in ncompress
allowing for the execution of arbitrary code.
Background
==========
ncompress is a suite of utilities to create and extract
Lempel-Ziff-Welch (LZW) compressed archives.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/ncompress < 4.2.4.1 >= 4.2.4.1
Description
===========
Tavis Ormandy of the Google Security Team discovered a static buffer
underflow in ncompress.
Impact
======
An attacker could create a specially crafted LZW archive, that when
decompressed by a user or automated system would result in the
execution of arbitrary code with the permissions of the user invoking
the utility.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All ncompress users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/ncompress-4.2.4.1"
References
==========
[ 1 ] CVE-2006-1168
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1168
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200610-03.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 2006 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/2.5
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