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[gentoo-announce] [ GLSA 200904-18 ] udev: Multiple vulnerabilities

Posted on 18 April 2009
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 200904-18
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http://security.gentoo.org/
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Severity: High
Title: udev: Multiple vulnerabilities
Date: April 18, 2009
Bugs: #266290
ID: 200904-18

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Synopsis
========
Two errors in udev allow for a local root compromise and a Denial of
Service.

Background
==========
udev is the device manager used in the Linux 2.6 kernel series.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 sys-fs/udev < 124-r2 >= 124-r2

Description
===========
Sebastian Krahmer of SUSE discovered the following two vulnerabilities:

* udev does not verify the origin of NETLINK messages properly
(CVE-2009-1185).

* A buffer overflow exists in the util_path_encode() function in
lib/libudev-util.c (CVE-2009-1186).

Impact
======
A local attacker could gain root privileges by sending specially
crafted NETLINK messages to udev or cause a Denial of Service.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All udev users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-fs/udev-124-r2"

References
==========
[ 1 ] CVE-2009-1185
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1185
[ 2 ] CVE-2009-1186
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1186

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

http://security.gentoo.org/glsa/glsa-200904-18.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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