Vulnerability in IRIX autofsd

[agent99 () BOYTOY CSD SGI COM (SGI Security Coordinator)]

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______________________________________________________________________________
                Silicon Graphics Inc. Security Advisory

        Title:  Vulnerability in IRIX autofsd
        Title:  RSI.0010.10-02-98.IRIX.AUTOFSD
        Number: 19981005-01-A
        Date:   October 22, 1998
______________________________________________________________________________

Silicon Graphics provides this information freely to the SGI user community
for its consideration, interpretation, implementation and use.   Silicon
Graphics recommends that this information be acted upon as soon as possible.

Silicon Graphics provides the information in this Security Advisory on
an "AS-IS" basis only, and disclaims all warranties with respect thereto,
express, implied or otherwise, including, without limitation, any warranty
of merchantability or fitness for a particular purpose.  In no event shall
SGI be liable for any loss of profits, loss of business, loss of data or
for any indirect, special, exemplary, incidental or consequential damages
of any kind arising from your use of, failure to use or improper use of
any of the instructions or information in this Security Advisory.
______________________________________________________________________________

- -----------------------
- --- Issue Statement ---
- -----------------------

Silicon Graphics Inc. acknowledges the vulnerability in autofsd publicly
reported by RSI.0010.10-02-98.IRIX.AUTOFSD:

http://www.repsec.com/advisory/0010.html

For the protection of all our customers, SGI does not disclose, discuss
or confirm vulnerabilities until a full investigation has occurred and
any necessary patch(es) are available for all currently supported vulnerable
IRIX O/S.

Until Silicon Graphics has more definitive information to provide, customers
are encouraged to assume all security vulnerabilities as exploitable and take
appropriate steps according to local site security policies and requirements.

Steps to disable the autofsd daemon are found in the Temporary Solution
section.

Currently, Silicon Graphics Inc. is investigating and no further information
is available for public release at this time.

As further information becomes available, additional advisories will be
issued via the normal SGI security information distribution methods
including the wiretap mailing list.


- ----------------------------
- ----- Temporary Solution ---
- ----------------------------

The steps below can be used to disable the autofs(1M) daemon.

      =================
      **** WARNING ****
      =================

      Disabling autofs(1M) daemon will prevent users from automatically
      mounting remote file systems. The automount(1M) daemon can be used
      as a temporary workaround. See the ONC3/NFS Administrator's Guide
      which is available online from the insight program or via the web:

      http://techpubs.sgi.com/library/


     1) Become the root user on the system.

              % /bin/su -
              Password:
              #


     2) Verify autofs(1M) daemon is enabled.

              # chkconfig

              Flag                 State
              ====                 =====
              autofs               on


     3) Disable autofs(1M) daemon.

              # chkconfig autofsd off



     4) Verify autofs(1M) daemon has been disabled.

              # chkconfig

              Flag                 State
              ====                 =====
              autofs               off



     5) Reboot the system

              # reboot


- -----------------------------------------
- --- SGI Security Information/Contacts ---
- -----------------------------------------

If there are questions about this document, email can be sent to
cse-security-alert () sgi com.

                      ------oOo------

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                      ------oOo------

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                      ------oOo------

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                      ------oOo------

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______________________________________________________________________________
  This information is provided freely to all interested parties and may
  be redistributed provided that it is not altered in any way, Silicon
  Graphics is appropriately credited and the document retains and
  includes its valid PGP signature.

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