[ GLSA 200904-18 ] udev: Multiple vulnerabilities

[Pierre-Yves Rofes <py () gentoo org>]

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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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