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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
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-fs/nfs-utils < 1.1.3 >= 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 ">=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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