GLSA 200903-06 nfs-utils: Access restriction bypass
Posted on: 03/07/2009 05:40 PM

A new security update has been released for Gentoo Linux - nfs-utils: Access restriction bypass. Here the announcement:

Gentoo Linux Security Advisory GLSA 200903-06
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http://security.gentoo.org/
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Severity: Normal
Title: nfs-utils: Access restriction bypass
Date: March 07, 2009
Bugs: #242696
ID: 200903-06

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Synopsis
========

An error in nfs-utils allows for bypass of the netgroups restriction.

Background
==========

nfs-utils contains the client and daemon implementations for the NFS
protocol.

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

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Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-fs/nfs-utils lt; 1.1.3 gt;= 1.1.3

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

Michele Marcionelli reported that nfs-utils invokes the hosts_ctl()
function with the wrong order of arguments, which causes TCP Wrappers
to ignore netgroups.

Impact
======

A remote attacker could bypass intended access restrictions, i.e. NFS
netgroups, and gain access to restricted services.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All nfs-utils users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=net-fs/nfs-utils-1.1.3"

References
==========

[ 1 ] CVE-2008-4552
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4552

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

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

http://security.gentoo.org/glsa/glsa-200903-06.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 2009 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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