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Gentoo Linux Security Advisory                           GLSA 200702-04
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                                            https://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:

  https://security.gentoo.org/glsa/200702-04

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
https://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.

https://creativecommons.org/licenses/by-sa/2.5/