[ GLSA 200702-04 ] RAR, UnRAR: Buffer overflow

[Raphael Marichez <falco () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200702-04
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                                            http://security.gentoo.org/
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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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