AUSCERT External Security Bulletin Redistribution
                       ESB-98.121 -- CERT VB-98.07
                 OpenVMS loginout Vulnerability Update
                              31 July 1998


The CERT Coordination Center has released the following advisory containing
updated information concerning a potential vulnerability in loginout for
OpenVMS.  This vulnerability may allow a user to gain unauthorised access.

The following security bulletin is provided as a service to AusCERT's
members.  As AusCERT did not write this document, AusCERT has had no
control over its content.  As such, the decision to use any or all of this
information is the responsibility of each user or organisation, and should
be done so in accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It will
not be updated when the original bulletin is.  If downloading at a later
date, it is recommended that the bulletin is retrieved from the original
authors to ensure that the information is still current.

Contact information for Compaq is included in the Security Bulletin below.
If you have any questions or need further information, please contact them

Previous advisories and external security bulletins can be retrieved from:


If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.

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CERT* Vendor-Initiated Bulletin VB-98.07
July 28, 1998

Topic:  OpenVMS (VAX & ALPHA) V7.1 LOGINOUT Potential Security Vulnerability
Source: Compaq Computer Corporation

To aid in the wide distribution of essential security information, the CERT
Coordination Center is forwarding the following information from Compaq
Computer Corporation. Compaq urges you to act on this information as soon as
possible. Compaq Computer Corporation contact information is included in the
forwarded text below; please contact them if you have any questions or need
further information.

=======================FORWARDED TEXT STARTS HERE============================
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.

========================FORWARDED TEXT ENDS HERE=============================

If you believe that your system has been compromised, contact the CERT
Coordination Center or your representative in the Forum of Incident Response
and Security Teams (FIRST). See http://www.first.org/team-info/.

We strongly urge you to encrypt any sensitive information you send by email.
The CERT Coordination Center can support a shared DES key and PGP. Contact
the CERT staff for more information.

Location of CERT PGP key

CERT Contact Information
- - ------------------------
Email    cert@cert.org

Phone    +1 412-268-7090 (24-hour hotline)
                CERT personnel answer 8:30-5:00 p.m. EST
                (GMT-5)/EDT(GMT-4), and are on call for
                emergencies during other hours.

Fax      +1 412-268-6989

Postal address
        CERT Coordination Center
        Software Engineering Institute
        Carnegie Mellon University
        Pittsburgh PA 15213-3890

CERT publications, information about FIRST representatives, and other
security-related information are available from

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The CERT Coordination Center is part of the Software Engineering
Institute (SEI). The SEI is sponsored by the U. S. Department of Defense.

This file: ftp://ftp.cert.org/pub/cert_bulletins/VB-98.07.OpenVMS.LOGINOUT

Version: 2.6.2


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Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key