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TUCoPS :: Antique Systems :: ciaci071.txt

OpenVMS Loginout Vulnerability


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

                             INFORMATION BULLETIN

                         OpenVMS loginout Vulnerability

July 27, 1998 20:00 GMT                                          Number I-071A
PROBLEM:       A potential vulnerability has been identified with loginout.
DAMAGE:        If exploited, a user may gain unauthorized access.
SOLUTION:      Apply patches listed below.
VULNERABILITY  If is strongly recommended that you upgrade to a minimum of
ASSESSMENT:    OpenVMS (VAX or Alpha) V7.1 and that the appropriate patches be
               applied immediately.

[ Updated on July 27, 1998 with revised information from Compaq Computer Corp.]

[ Start Compaq Computer Corp. Advisory ]

UPDATED:                                JULY 24, 1998
DATE:					JULY 13, 1998

  TITLE:  OpenVMS (VAX & ALPHA) V7.1
          LOGINOUT Potential Security Vulnerability
          Ref #: SSRT0541V
	SOURCE: Compaq Computer Corporation
                Software Security Response Team 
"We are broadly distributing this Security Advisory in order
to bring to the attention of users of OpenVMS products the
important security information contained in this Advisory. 
We recommend that all users determine the applicability 
of this information to their individual situations and take
appropriate action.

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

- ----------------------------------------------------------------------

A potential vulnerability with LOGINOUT  for 
OpenVMS (VAX & ALPHA) V7.1 software has been 
discovered, where under certain circumstances,  
a user may gain unauthorized access. 

Prior versions of OpenVMS (VAX & ALPHA) are not affected.

This potential vulnerability is limited to OpenVMS V7.1 with
external authentication enabled. The vulnerability does not 
exist if external authentication is disabled. 
(External authentication is disabled by 
default. Please refer to the OpenVMS Guide to System Security,
section 7.4, for detailed information on external authentication.)

We strongly recommend that OpenVMS V7.1 customers install the 
appropriate patch kit immediately.
- ----------------------------------------------------------------------

This potential security vulnerability has been resolved and an
official patch for this problem has been made available for OpenVMS
VAX V7.1 and OpenVMS ALPHA V7.1, V7.1-1H1, and V7.1-1H2 systems.

  o the World Wide Web at the following FTP address:    
 Use the FTP access option, select the directory, 
 then choose the appropriate VAX/V7.1   
 or ALP/V7.1 directory and download the 
 patch accordingly.

    OpenVMS VAX kit      
    OpenVMS Alpha kit

  Note: [1]The appropriate patch kit must be installed
     following any upgrade to OpenVMS (VAX or ALPHA) V7.1
        [2] Please review the appropriate release notes and
     cover letter prior to installation.
 If you need further information, please contact your normal Compaq
 Customer Services support channel for OpenVMS (VAX or ALPHA).

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

 As always, we urge you to periodically review your system
 management and security procedures. 

 We will continue to review and enhance the security
 features of our products and work with customers to  
 maintain and improve the security and integrity of 
 their systems.
(c) Copyright 1994, 1995, 1996, 1997, 1998 Compaq Computer
Corporation.  All Rights Reserved.   Unpublished Rights 
Reserved Under The Copyright Laws Of The United States.

[ End Compaq Computer Corp. Advisory ]

CIAC wishes to acknowledge the contributions of Compaq Computer Corp. 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

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:
                        (or -- they're the same machine)
   Anonymous FTP:
                        (or -- 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
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
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 or
        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

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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