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[gentoo-announce] [ GLSA 201206-29 ] mount-cifs: Multiple vulnerabilites

Posted on 25 June 2012
Gentoo-announce

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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@gentoo.org 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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