TITLE: SSRT0583U COMPAQ COMPUTER CORPORATION ADVISORY

Subj: COMPAQ COMPUTER CORPORATION ADVISORY  SSRT0583U

          * No Restrictions For Distribution *

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DATE:                                              08 FEB 1999

 TITLE: DIGITAL UNIX  at & inc   V4.0, V4.0a, V4.0b, V4.0c, V4.0d, V4.0e
        - Potential Security Vulnerability
       ref#: SSRT0583U  "at" & "inc"

 SOURCE: Compaq Computer Corporation
         Software Security Response Team

"Compaq is broadly distributing this Security Advisory in order
to bring to the attention of users of Compaq products the
important security information contained in this Advisory.
Compaq recommends that all users determine the applicability of
this information to their individual situations and take
appropriate action.

Compaq does not warrant that this information is necessarily
accurate or complete for all user situations and, consequently,
Compaq will not be responsible for any damages resulting from
user's use or disregard of the information provided in this
Advisory."

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IMPACT:

  Compaq has discovered a potential vulnerability with the
  "at" and "inc" for Compaq's DIGITAL UNIX  software, where under certain
  circumstances, an user may gain unauthorized privileges.

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RESOLUTION:

This potential security problem has been resolved and a
patch for this problem has been made available for
Compaq's Tru64/DIGITAL  UNIX V4.0 to V4.0e


*This solution will be included in the next distributed release of
 Compaq's Tru64/DIGITAL UNIX

The patch may be obtained from the World Wide Web at the
ollowing FTP address:

   http://www.service.digital.com/html/patch_service.html
   Use the Browse Patch Tree access option, select DIGITAL_UNIX
   directory then choose the appropriate version directory
   and download the patch accordingly.

 Note: [1]  The appropriate patch kit must be installed
       following any upgrade to V4.0a, V4.0b, or V4.0c,
     V4.0d, V4.0e.  If you upgrade from one version to
       another, i.e., V4.0b to V4.0d you should re-install
       these patches.


          [2]   IMPORTANT - Please review the appropriate
     release notes prior to installation of this patch.

Additional Considerations:

  The following components are updated by these patches:

 /usr/bin/at           (the "at" command)
  /usr/bin/mh/inc      (The MH message handling system's "inc" command)
  /usr/shlib/libmh.so  (The MH shared library)

If you believe you have, or aren't sure if you have, previously
installed a patch to any of these modules you should contact your
normal Compaq Services support channel.

Compaq appreciates your cooperation and patience. We regret any
inconvenience applying this information may cause.

As always, Compaq urges you to periodically review your system
management and security procedures.

Compaq will continue to review and enhance the security
features of its products and work with customers to maintain and
improve the security and integrity of their systems.

______________________________________________________________
Copyright (c) Compaq Computer Corporation, 1999 All
Rights Reserved.
Unpublished Rights Reserved Under The Copyright Laws Of
The United States.
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