GLSA 200512-15 rssh: Privilege escalation
Posted on: 12/27/2005 04:52 PM

A new security update has been released for Gentoo Linux - rssh: Privilege escalation. Here the announcement:

Gentoo Linux Security Advisory GLSA 200512-15
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http://security.gentoo.org/
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Severity: High
Title: rssh: Privilege escalation
Date: December 27, 2005
Bugs: #115082
ID: 200512-15

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Synopsis
========

Local users could gain root privileges by chrooting into arbitrary
directories.

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 lt; 2.3.0 gt;= 2.3.0

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

Max Vozeler discovered that the rssh_chroot_helper command allows local
users to chroot into arbitrary directories.

Impact
======

A local attacker could exploit this vulnerability to gain root
privileges by chrooting into arbitrary directories.

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 "gt;=app-shells/rssh-2.3.0"

References
==========

[ 1 ] CVE-2005-3345
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3345
[ 2 ] rssh security announcement
http://www.pizzashack.org/rssh/security.shtml

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

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

http://security.gentoo.org/glsa/glsa-200512-15.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 2005 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/2.0



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