[Full-disclosure] [ GLSA 200603-05 ] zoo: Stack-based buffer overflow

[Thierry Carrez]

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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      < 2.10-r1                            >= 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 ">=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 at 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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