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GLSA 200410-28: rssh: Format string vulnerability
Posted by Philipp Esselbach on: 10/27/2004 05:02 PM [ Print | 0 comment(s) ]
A rssh security update has been released for Gentoo Linux
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Gentoo Linux Security Advisory GLSA 200410-28
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http://security.gentoo.org/
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Severity: High
Title: rssh: Format string vulnerability
Date: October 27, 2004
Bugs: #66988
ID: 200410-28
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Synopsis
=======
rssh is vulnerable to a format string vulnerability that allows arbitrary execution of code with the rights of the connected user, thereby bypassing rssh restrictions.
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Gentoo Linux Security Advisory GLSA 200410-28
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Severity: High
Title: rssh: Format string vulnerability
Date: October 27, 2004
Bugs: #66988
ID: 200410-28
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Synopsis
=======
rssh is vulnerable to a format string vulnerability that allows arbitrary execution of code with the rights of the connected user, thereby bypassing rssh 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
================
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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-shells/rssh < 2.2.2 >= 2.2.2
Description
==========
Florian Schilhabel from the Gentoo Linux Security Audit Team found a format string vulnerability in rssh syslogging of failed commands.
Impact
=====
Using a malicious command, it may be possible for a remote authenticated user to execute arbitrary code on the target machine with user rights, effectively bypassing any restriction of rssh.
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-2.2.2"
References
=========
[ 1 ] 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-200410-28.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 2004 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/1.0
=========
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 < 2.2.2 >= 2.2.2
Description
==========
Florian Schilhabel from the Gentoo Linux Security Audit Team found a format string vulnerability in rssh syslogging of failed commands.
Impact
=====
Using a malicious command, it may be possible for a remote authenticated user to execute arbitrary code on the target machine with user rights, effectively bypassing any restriction of rssh.
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-2.2.2"
References
=========
[ 1 ] 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-200410-28.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 2004 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/1.0
