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CERT Advisory CA-99-09 Array Services default configuration

   Originally released: July 19, 1999
   Source: CERT/CC
Systems Affected

     * IRIX systems running the Array Services daemon
     * UNICOS systems running the Array Services daemon
I. Description

   A vulnerability has been discovered in the default configuration of
   the Array Services daemon, arrayd. Array Services are used to manage a
   cluster of systems. The default configuration file, arrayd.auth,
   disables authentication and does not provide adequate protection for
   systems connected to an untrusted network.
   SGI has published the following document describing the vulnerability
   and solutions:
II. Impact

   On systems installed with the default configuration, remote and local
   users can execute arbitrary commands as root.
III. Solution

   Use "SIMPLE" authentication
   Reconfigure arrayd to use "SIMPLE" authentication. For more
   information about reconfiguring arrayd, please see the SGI security
   Disable the arrayd daemon
   If you do not need the capabilities provided by the arrayd daemon, you
   may wish to disable the daemon.
   The CERT Coordination Center would like to thank Yuri Volobuev and the
   SGI Security Team for their assistance in preparing this advisory.
   This document is available from:
CERT/CC Contact Information

   Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
          Phone: +1 412-268-7090 (24-hour hotline)
          Fax: +1 412-268-6989
          Postal address:
          CERT Coordination Center
          Software Engineering Institute
          Carnegie Mellon University
          Pittsburgh PA 15213-3890
   CERT personnel answer the hotline 08:00-20:00 EST(GMT-5) / EDT(GMT-4)
   Monday through Friday; they are on call for emergencies during other
   hours, on U.S. holidays, and on weekends.
Using encryption

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Getting security information

   CERT publications and other security information are available from
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   Copyright 1999 Carnegie Mellon University.
   Conditions for use, disclaimers, and sponsorship information can be
   found in
   * "CERT" and "CERT Coordination Center" are registered in the U.S.
   Patent and Trademark Office
   Any material furnished by Carnegie Mellon University and the Software
   Engineering Institute is furnished on an "as is" basis. Carnegie
   Mellon University makes no warranties of any kind, either expressed or
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   does not make any warranty of any kind with respect to freedom from
   patent, trademark, or copyright infringement.
   Revision History
   July 19, 1999:  Initial release

Version: 2.6.2


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