[ GLSA 200407-09 ] MoinMoin: Group ACL bypass

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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_at_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