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Gentoo Linux Security Advisory                           GLSA 201709-24
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: RAR, UnRAR: Multiple vulnerabilities
     Date: September 25, 2017
     Bugs: #622342, #628182, #628184
       ID: 201709-24

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Synopsis
========

Multiple vulnerabilities have been found in RAR and UnRAR, the worst of
which may allow attackers to execute 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            < 5.5.0_p20170811     >= 5.5.0_p20170811 
  2  app-arch/unrar               < 5.5.7                    >= 5.5.7 
    -------------------------------------------------------------------
     2 affected packages

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

Multiple vulnerabilities have been discovered in RAR and UnRAR. Please
review the referenced CVE identifiers for details.

Impact
======

A remote attacker, by enticing a user to open a specially crafted RAR,
could possibly execute arbitrary code with the privileges of the
process or cause a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All RAR users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/rar-5.5.0_p20170811"

All UnRAR users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-arch/unrar-5.5.7"

References
==========

[ 1 ] CVE-2012-6706
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6706
[ 2 ] CVE-2017-12940
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-12940
[ 3 ] CVE-2017-12941
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-12941
[ 4 ] CVE-2017-12942
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-12942

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

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

 https://security.gentoo.org/glsa/201709-24

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 2017 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