full-disclosure - [ GLSA 201006-09 ] sudo: Privilege escalation

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Date: Tue, 01 Jun 2010 17:44:17 +0200
From: Tobias Heinlein <keytoaster@...too.org>
To: gentoo-announce@...too.org
Cc: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com,
	security-alerts@...uxsecurity.com
Subject: [ GLSA 201006-09 ] sudo: Privilege escalation

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Gentoo Linux Security Advisory                           GLSA 201006-09
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                                            http://security.gentoo.org/
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  Severity: High
     Title: sudo: Privilege escalation
      Date: June 01, 2010
      Bugs: #321697
        ID: 201006-09

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Synopsis
========

A flaw in sudo's -e option may allow local attackers to execute
arbitrary commands.

Background
==========

sudo allows a system administrator to give users the ability to run
commands as other users.

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

    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  app-admin/sudo     < 1.7.2_p6                         >= 1.7.2_p6

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

The command matching functionality does not properly handle when a file
in the current working directory has the same name as a pseudo-command
in the sudoers file and the PATH contains an entry for ".".

Impact
======

A local attacker with the permission to run sudoedit could, under
certain circumstances, execute arbitrary commands as whichever user he
has permission to run sudoedit as, typically root.

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-1.7.2_p6"

References
==========

  [ 1 ] CVE-2010-1163
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-1163

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

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

  http://security.gentoo.org/glsa/glsa-201006-09.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@...too.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2010 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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