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Gentoo: 201406-30 sudo: Privilege escalation Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
Gentoo A vulnerability has been found in sudo allowing a local attacker to gain elevated privileges.
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Gentoo Linux Security Advisory                           GLSA 201406-30
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                                            http://security.gentoo.org/
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 Severity: High
    Title: sudo: Privilege escalation
     Date: June 27, 2014
     Bugs: #503586
       ID: 201406-30

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Synopsis
========

A vulnerability has been found in sudo allowing a local attacker to
gain elevated privileges.

Background
==========

sudo allows a system administrator to give users the ability to run
commands as other users. Access to commands may also be granted on a
range to hosts.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-admin/sudo               < 1.8.5                    >= 1.8.5 
                                                              < 1.6.9 

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

When the Sudo env_reset option is disabled (it is enabled by default),
certain environment variables are not blacklisted as expected.

Impact
======

A local attacker, authorized to run commands using sudo, can use this
flaw to execute arbitrary code or escalate his privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All sudo users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-admin/sudo-1.8.5"

References
==========

[ 1 ] CVE-2014-0106
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0106

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

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

 http://security.gentoo.org/glsa/glsa-201406-30.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 2014 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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