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Gentoo Linux Security Advisory                           GLSA 201311-19
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: rssh: Access restriction bypass
     Date: November 28, 2013
     Bugs: #415255, #445166
       ID: 201311-19

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Synopsis
========

Multiple vulnerabilities have been found in rssh, allowing local
attackers to bypass access restrictions.

Background
==========

rssh is a restricted shell, allowing only a few commands like scp or
sftp. It is often used as a complement to OpenSSH to provide limited
access to users.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-shells/rssh              < 2.3.4                    >= 2.3.4

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

Multiple command line parsing and validation vulnerabilities have been
discovered in rssh. Please review the CVE identifiers referenced below
for details.

Impact
======

Multiple parsing and validation vulnerabilities can cause the
restrictions set up by rssh to be bypassed.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All rssh users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-shells/rssh-2.3.4"

References
==========

[ 1 ] CVE-2012-2252
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-2252
[ 2 ] CVE-2012-3478
      http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2012-3478

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

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

 http://security.gentoo.org/glsa/glsa-201311-19.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
https://bugs.gentoo.org.

License
=======

Copyright 2013 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