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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:
   
   ftp://sgigate.sgi.com/security/19990701-01-P
          
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
   bulletin.
   
   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:
   http://www.cert.org/advisories/CA-99-09-arrayd.html.
   ______________________________________________________________________
   
CERT/CC Contact Information

   Email: cert@cert.org
          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
          U.S.A.
          
   CERT personnel answer the hotline 08:00-20:00 EST(GMT-5) / EDT(GMT-4)
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   Copyright 1999 Carnegie Mellon University.
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   ______________________________________________________________________
   
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   Revision History
   July 19, 1999:  Initial release

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