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TUCoPS :: Unix :: Various Flavours :: ciacj027.txt

Digital Unix At Inc Vulnerabilities




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             __________________________________________________________

                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___
             __________________________________________________________

                             INFORMATION BULLETIN

                  Digital Unix  Vulnerabilities ( at , inc )

February 11, 1999 17:00 GMT                                       Number J-027
______________________________________________________________________________
PROBLEM:       A potential security vulnerability has been identified in the
               "at" and "inc" commands.
PLATFORM:      Compaq's Tru64 running DIGITAL UNIX software; V4.0, V4.0a,
               V4.0b, V4.0c, V4.0d, V4.0e.
DAMAGE:        If exploited, users may gain unauthorized privileges.
SOLUTION:      Install the appropriate patch kit.
______________________________________________________________________________
VULNERABILITY  Risk is medium. Compaq recommends that all users determine the
ASSESSMENT:    applicability of this information to their individual
               situations and take appropriate action.
______________________________________________________________________________

[  Start Compaq Computer Corp. Advisory  ]

______________________________________________________________
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."

- ----------------------------------------------------------------------
IMPACT:

A potential  potential security vulnerability has been discovered
with the "at" and "inc" for Compaq's Tru64/DIGITAL UNIX software,
where under certain circumstances, an user may gain
unauthorized privileges.

- -----------------------------------------------------------------------
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
following 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.
___________________________________________________________

Acknowledgments ---

Compaq wishes to thank Lamont Granquist and others for their
assistance in this matter.


[  End Compaq Computer Corp. Advisory  ]
______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Compaq Computer Corporation
for the information contained in this bulletin.
______________________________________________________________________________


CIAC, the Computer Incident Advisory Capability, is the computer
security incident response team for the U.S. Department of Energy
(DOE) and the emergency backup response team for the National
Institutes of Health (NIH). CIAC is located at the Lawrence Livermore
National Laboratory in Livermore, California. CIAC is also a founding
member of FIRST, the Forum of Incident Response and Security Teams, a
global organization established to foster cooperation and coordination
among computer security teams worldwide.

CIAC services are available to DOE, DOE contractors, and the NIH. CIAC
can be contacted at:
    Voice:    +1 925-422-8193
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@llnl.gov

For emergencies and off-hour assistance, DOE, DOE contractor sites,
and the NIH may contact CIAC 24-hours a day. During off hours (5PM -
8AM PST), call the CIAC voice number 925-422-8193 and leave a message,
or call 800-759-7243 (800-SKY-PAGE) to send a Sky Page. CIAC has two
Sky Page PIN numbers, the primary PIN number, 8550070, is for the CIAC
duty person, and the secondary PIN number, 8550074 is for the CIAC
Project Leader.

Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.

   World Wide Web:      http://www.ciac.org/
                        (or http://ciac.llnl.gov -- they're the same machine)
   Anonymous FTP:       ftp.ciac.org
                        (or ciac.llnl.gov -- they're the same machine)
   Modem access:        +1 (925) 423-4753 (28.8K baud)
                        +1 (925) 423-3331 (28.8K baud)

CIAC has several self-subscribing mailing lists for electronic
publications:
1. CIAC-BULLETIN for Advisories, highest priority - time critical
   information and Bulletins, important computer security information;
2. SPI-ANNOUNCE for official news about Security Profile Inspector
   (SPI) software updates, new features, distribution and
   availability;
3. SPI-NOTES, for discussion of problems and solutions regarding the
   use of SPI products.

Our mailing lists are managed by a public domain software package
called Majordomo, which ignores E-mail header subject lines. To
subscribe (add yourself) to one of our mailing lists, send the
following request as the E-mail message body, substituting
ciac-bulletin, spi-announce OR spi-notes for list-name:

E-mail to       ciac-listproc@llnl.gov or majordomo@rumpole.llnl.gov:
        subscribe list-name
  e.g., subscribe ciac-bulletin

You will receive an acknowledgment email immediately with a confirmation
that you will need to mail back to the addresses above, as per the
instructions in the email.  This is a partial protection to make sure
you are really the one who asked to be signed up for the list in question.

If you include the word 'help' in the body of an email to the above address,
it will also send back an information file on how to subscribe/unsubscribe,
get past issues of CIAC bulletins via email, etc.

PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing
communities receive CIAC bulletins.  If you are not part of these
communities, please contact your agency's response team to report
incidents. Your agency's team will coordinate with CIAC. The Forum of
Incident Response and Security Teams (FIRST) is a world-wide
organization. A list of FIRST member organizations and their
constituencies can be obtained via WWW at http://www.first.org/.

This document was prepared as an account of work sponsored by an
agency of the United States Government. Neither the United States
Government nor the University of California nor any of their
employees, makes any warranty, express or implied, or assumes any
legal liability or responsibility for the accuracy, completeness, or
usefulness of any information, apparatus, product, or process
disclosed, or represents that its use would not infringe privately
owned rights. Reference herein to any specific commercial products,
process, or service by trade name, trademark, manufacturer, or
otherwise, does not necessarily constitute or imply its endorsement,
recommendation or favoring by the United States Government or the
University of California. The views and opinions of authors expressed
herein do not necessarily state or reflect those of the United States
Government or the University of California, and shall not be used for
advertising or product endorsement purposes.

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