[gentoo-announce] [ GLSA 200903-06 ] nfs-utils: Access restriction bypass

[news 28]

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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 ( -at -) 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