-----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ 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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