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[gentoo-announce] [ GLSA 201311-19 ] rssh: Access restriction bypass

Posted on 28 November 2013
Gentoo-announce

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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


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