-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Tru64/Digital UNIX (dtlogin) Security Vulnerability June 10, 1999 21:00 GMT Number J-044 ______________________________________________________________________________ PROBLEM: There is a potential vulnerability with the /usr/dt/bin/dtlogin in Compaq's Tru64/DIGITAL UNIX software, where under certain circumstances, a user may gain unauthorized access as superuser. PLATFORM: Systems running Tru64/DIGITAL UNIX V4.0B, V4.0D, V4.0E and V4.0F. DAMAGE: Under certain circumstances, a user may gain unauthorized access as superuser. SOLUTION: Apply the vendor-supplied patch. ______________________________________________________________________________ VULNERABILITY The risk is high due to the possibility of gaining a root ASSESSMENT: compromise. ______________________________________________________________________________ [ Start Compaq Computer Corporation Advisory ] ________________________________________________________ UPDATE: May 11, 1999 TITLE: Tru64/DIGITAL UNIX V4.0b, V4.0d, V4.0e and V4.0f Potential Security Vulnerability ref#: SSRT0600U "dtlogin" 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: Compaq has discovered a potential vulnerability with the /usr/dt/bin/dtlogin in Compaq's Tru64/DIGITAL UNIX software, where under certain circumstances, a user may gain unauthorized access as superuser. - ----------------------------------------------------------------------- RESOLUTION: This potential security problem has been resolved and a patch for this problem has been made available for Tru64/DIGITAL UNIX V4.0B, V4.0D, V4.0E and V4.0F. Systems with enhanced security enabled and one or more of the products listed below, should install this patch immediately. - Distributed Computing Environment (DCE) from Compaq - - Advanced Server for Digital UNIX (ASDU) from Compaq - - AFS Enterprise File Systems from Transarc - - Kerberos 4 Network Authentication Protocol from MIT If you need this patch for V4.0, V4.0A or V4.0C, please contact your normal Compaq Services support channel. *This solution will be included in a future distributed release of Compaq's Tru64/DIGITAL UNIX. This patch may be obtained from the World Wide Web at the following FTP address: http://www.service.digital.com/patches Use the FTP 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 V4.0b, V4.0d, V4.0e or V4.0f. [1a] These patches may be used on any patch kit/base level. [2] IMPORTANT - Please review all README and release notes which are related to this patch or an official patch kit, prior to installation of this patch. Additional Considerations: This patch updates the following component: /usr/dt/bin/dtlogin If you believe you have, or aren't sure if you have, previously installed a patch to this module you should contact your normal Compaq Service channel. Also, if you need further information, please 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. ________________________________________________________ [ End Compaq Computer Corporation Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge the Compaq Computer Corporation for the information contained in this bulletin. ______________________________________________________________________________ For additional information or assistance, please contact CIAC: 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), use one of the following methods to contact CIAC: 1. Call the CIAC voice number 925-422-8193 and leave a message, or 2. Call 888-449-8369 to send a Sky Page to the CIAC duty person or 3. Send e-mail to 4498369@skytel.com, or 4. Call 800-201-9288 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) Anonymous FTP: ftp.ciac.org (or ciac.llnl.gov) 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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