GLSA 200603-05 zoo: Stack-based buffer overflow
Posted on: 03/06/2006 11:52 PM

A new security update has been released for Gentoo Linux - zoo: Stack-based buffer overflow. Here the announcement:

Gentoo Linux Security Advisory GLSA 200603-05
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http://security.gentoo.org/
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Severity: Normal
Title: zoo: Stack-based buffer overflow
Date: March 06, 2006
Bugs: #123782
ID: 200603-05

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Synopsis
========

A stack-based buffer overflow in zoo may be exploited to execute
arbitrary code through malicious ZOO archives.

Background
==========

zoo is a file archiving utility for maintaining collections of files,
written by Rahul Dhesi.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-arch/zoo lt; 2.10-r1 gt;= 2.10-r1

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

Jean-Sebastien Guay-Leroux discovered a boundary error in the
fullpath() function in misc.c when processing overly long file and
directory names in ZOO archives.

Impact
======

An attacker could craft a malicious ZOO archive and entice someone to
open it using zoo. This would trigger a stack-based buffer overflow and
potentially allow execution of arbitrary code with the rights of the
victim user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All zoo users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=app-arch/zoo-2.10-r1"

References
==========

[ 1 ] CVE-2006-0855
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0855
[ 2 ] Original Advisory
http://www.guay-leroux.com/projects/zoo-advisory.txt

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

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

http://security.gentoo.org/glsa/glsa-200603-05.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/2.0



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