[ GLSA 201006-09 ] sudo: Privilege escalation

[Tobias Heinlein <keytoaster () gentoo org>]

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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 () gentoo 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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