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[gentoo-announce] [ GLSA 201406-30 ] sudo: Privilege escalation

Posted on 27 June 2014
Gentoo-announce

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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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