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Gentoo Linux Security Advisory                           GLSA 200702-04
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  Severity: Normal
     Title: RAR, UnRAR: Buffer overflow
      Date: February 13, 2007
      Bugs: #166440
        ID: 200702-04

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Synopsis
========

RAR and UnRAR contain a buffer overflow allowing the execution of
arbitrary code.

Background
==========

RAR and UnRAR provide command line interfaces for compressing and
decompressing RAR files.

Affected packages
=================

    -------------------------------------------------------------------
     Package         /    Vulnerable    /                   Unaffected
    -------------------------------------------------------------------
  1  app-arch/rar        < 3.7.0_beta1                  >= 3.7.0_beta1
  2  app-arch/unrar         < 3.7.3                           >= 3.7.3
    -------------------------------------------------------------------
     2 affected packages on all of their supported architectures.
    -------------------------------------------------------------------

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

RAR and UnRAR contain a boundary error when processing
password-protected archives that could result in a stack-based buffer
overflow.

Impact
======

A remote attacker could entice a user to process a specially crafted
password-protected archive and execute arbitrary code with the rights
of the user uncompressing the archive.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All UnRAR users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/rar-3.7.3"

All RAR users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=app-arch/rar-3.7.0_beta1"

References
==========

  [ 1 ] CVE-2007-0855
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0855

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

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

  http://security.gentoo.org/glsa/glsa-200702-04.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 2007 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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