[ GLSA 200603-06 ] GNU tar: Buffer overflow

[Thierry Carrez <koon () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200603-06
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: GNU tar: Buffer overflow
      Date: March 10, 2006
      Bugs: #123038
        ID: 200603-06

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Synopsis
========

A malicious tar archive could trigger a Buffer overflow in GNU tar,
potentially resulting in the execution of arbitrary code.

Background
==========

GNU tar is the standard GNU utility for creating and manipulating tar
archives, a common format used for creating backups and distributing
files on UNIX-like systems.

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

    -------------------------------------------------------------------
     Package       /   Vulnerable   /                       Unaffected
    -------------------------------------------------------------------
  1  app-arch/tar      < 1.15.1-r1                        >= 1.15.1-r1

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

Jim Meyering discovered a flaw in the handling of certain header fields
that could result in a buffer overflow when extracting or listing the
contents of an archive.

Impact
======

A remote attacker could construct a malicious tar archive that could
potentially execute arbitrary code with the privileges of the user
running GNU tar.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU tar users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/tar-1.15.1-r1"

References
==========

  [ 1 ] CVE-2006-0300
        http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0300

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

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

  http://security.gentoo.org/glsa/glsa-200603-06.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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