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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
=================
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Package / Vulnerable / Unaffected
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1 app-shells/rssh < 2.3.0 >= 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 ">=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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