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To: gentoo-announce@g.o
From: Stefan Behte <craig@g.o>
Subject: [ GLSA 201206-29 ] mount-cifs: Multiple vulnerabilites
Date: Mon, 25 Jun 2012 21:01:05 +0200
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Gentoo Linux Security Advisory                           GLSA 201206-29
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: mount-cifs: Multiple vulnerabilites
     Date: June 25, 2012
     Bugs: #308067
       ID: 201206-29

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Synopsis
========

Multiple vulnerabilities were found in mount-cifs, the worst of which
leading to privilege escalation.

Background
==========

mount-cifs is the cifs filesystem mount helper split from Samba.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-fs/mount-cifs            < 3.4.6                    >= 3.4.6

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

Multiple vulnerabilities have been discovered in mount-cifs. Please
review the CVE identifiers referenced below for details.

Impact
======

The vulnerabilities allow local users to cause a denial of service
(mtab corruption) via a crafted string. Also, local users could mount a
CIFS share on an arbitrary mountpoint, and gain privileges via a
symlink attack on the mountpoint directory file.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All mount-cifs users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-fs/mount-cifs-3.4.6"

References
==========

[ 1 ] CVE-2010-0547
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0547
[ 2 ] CVE-2010-0787
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0787

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

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

 http://security.gentoo.org/glsa/glsa-201206-29.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@g.o or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2012 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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Updated Jun 25, 2012

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