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Gentoo: GNU tar Buffer overflow Print E-mail
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Posted by Benjamin D. Thomas   
Gentoo A malicious tar archive could trigger a Buffer overflow in GNU tar, potentially resulting in the execution of arbitrary code.
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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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