[ GLSA 200407-09 ] MoinMoin: Group ACL bypass

From: Kurt Lieber (klieber_at_gentoo.org)
Date: 07/11/04

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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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