GLSA 200903-06: nfs-utils: Access restriction bypass

http://security.gentoo.org/

Severity:	normal
Title:	nfs-utils: Access restriction bypass
Date:	03/07/2009
Bugs:	#242696
ID:	200903-06

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	Architecture(s)
net-fs/nfs-utils	< 1.1.3	>= 1.1.3	All supported architectures

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

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 https://bugs.gentoo.org.