GLSA 200804-02 bzip2: Denial of Service
Posted on: 04/02/2008 10:45 PM

A new security update has been released for Gentoo Linux - bzip2: Denial of Service. Here the announcement:

Gentoo Linux Security Advisory GLSA 200804-02
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http://security.gentoo.org/
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Severity: Normal
Title: bzip2: Denial of Service
Date: April 02, 2008
Bugs: #213820
ID: 200804-02

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Synopsis
========

A buffer overread vulnerability has been discovered in Bzip2.

Background
==========

bzip2 is a free and open source lossless data compression program.

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

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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/bzip2 lt; 1.0.5 gt;= 1.0.5

Description
===========

The Oulu University discovered that bzip2 does not properly check
offsets provided by the bzip2 file, leading to a buffer overread.

Impact
======

Remote attackers can entice a user or automated system to open a
specially crafted file that triggers a buffer overread, causing a
Denial of Service. libbz2 and programs linking against it are also
affected.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All bzip2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=app-arch/bzip2-1.0.5"

References
==========

[ 1 ] CVE-2008-1372
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1372

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

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

http://security.gentoo.org/glsa/glsa-200804-02.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 2008 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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