[ GLSA 200407-09 ] MoinMoin: Group ACL bypass

[Kurt Lieber <klieber () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200407-09
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: MoinMoin: Group ACL bypass
      Date: July 11, 2004
      Bugs: #53126
        ID: 200407-09

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Synopsis
========

MoinMoin contains a bug allowing a user to bypass group ACLs (Access
Control Lists).

Background
==========

MoinMoin is a Python clone of WikiWiki, based on PikiPiki.

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

    -------------------------------------------------------------------
     Package           /   Vulnerable   /                   Unaffected
    -------------------------------------------------------------------
  1  net-www/moinmoin       <= 1.2.1                          >= 1.2.2

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

MoinMoin contains a bug in the code handling administrative group ACLs.
A user created with the same name as an administrative group gains the
privileges of the administrative group.

Impact
======

If an administrative group called AdminGroup existed an attacker could
create a user called AdminGroup and gain the privileges of the group
AdminGroup. This could lead to unauthorized users gaining
administrative access.

Workaround
==========

For every administrative group with special privileges create a user
with the same name as the group.

Resolution
==========

All users should upgrade to the latest available version of MoinMoin,
as follows:

    # emerge sync

    # emerge -pv ">=net-ww/moinmoin-1.2.2"
    # emerge ">=net-ww/moinmoin-1.2.2"

References
==========

  [ 1 ] MoinMoin Announcement
        http://sourceforge.net/tracker/index.php?func=detail&aid=948103&group_id=8482&atid=108482
  [ 2 ] OSVDB Entry
        http://www.osvdb.org/6704

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

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

    http://security.gentoo.org/glsa/glsa-200407-09.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
http://bugs.gentoo.org.

License
=======

Copyright 2004 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/1.0

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