Fwd: [ GLSA 200506-22 ] sudo: Arbitrary command execution

[Derek M. <co...@pi...>]

This is precisely why I WILL NOT add an arbitrary command
configuration feature to rssh...  It's really hard to do it right, and
if you screw it up, you lose.


----- Forwarded message from Sune Kloppenborg Jeppesen <jae...@ge...=
> -----

=46rom: Sune Kloppenborg Jeppesen <jae...@ge...>
To: gen...@ge...
Cc: bu...@se..., ful...@li...,
	sec...@li...
Date: Thu, 23 Jun 2005 09:26:51 +0200
Subject: [ GLSA 200506-22 ] sudo: Arbitrary command execution
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Gentoo Linux Security Advisory                           GLSA 200506-22
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: sudo: Arbitrary command execution
      Date: June 23, 2005
      Bugs: #96618
        ID: 200506-22

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Synopsis
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A vulnerability in sudo may allow local users to elevate privileges.

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

Affected packages
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    -------------------------------------------------------------------
     Package         /  Vulnerable  /                       Unaffected
    -------------------------------------------------------------------
  1  app-admin/sudo     < 1.6.8_p9                         >=3D 1.6.8_p9

Description
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The sudoers file is used to define the actions sudo users are permitted
to perform. Charles Morris discovered that a specific layout of the
sudoers file could cause the results of an internal check to be
clobbered, leaving sudo vulnerable to a race condition.

Impact
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Successful exploitation would permit a local sudo user to execute
arbitrary commands as another user.

Workaround
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Reorder the sudoers file using the visudo utility to ensure the 'ALL'
pseudo-command precedes other command definitions.

Resolution
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All sudo users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=3Dapp-admin/sudo-1.6.8_p9"

References
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  [ 1 ] Sudo Announcement
        http://www.sudo.ws/sudo/alerts/path_race.html

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

  http://security.gentoo.org/glsa/glsa-200506-22.xml

Concerns?
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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
sec...@ge... or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
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Copyright 2005 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/2.0



----- End forwarded message -----

--=20
Derek D. Martin
http://www.pizzashack.org/
GPG Key ID: 0x81CFE75D