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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: 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
U.S.A.
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
We strongly urge you to encrypt sensitive information sent by email.
Our public PGP key is available from http://www.cert.org/CERT_PGP.key.
If you prefer to use DES, please call the CERT hotline for more
information.
Getting security information
CERT publications and other security information are available from
our web site http://www.cert.org/.
To be added to our mailing list for advisories and bulletins, send
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Copyright 1999 Carnegie Mellon University.
Conditions for use, disclaimers, and sponsorship information can be
found in http://www.cert.org/legal_stuff.html.
* "CERT" and "CERT Coordination Center" are registered in the U.S.
Patent and Trademark Office
______________________________________________________________________
NO WARRANTY
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
implied as to any matter including, but not limited to, warranty of
fitness for a particular purpose or merchantability, exclusivity or
results obtained from use of the material. Carnegie Mellon University
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
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