-----BEGIN PGP SIGNED MESSAGE----- - ---EXTERNAL RELEASE---EXTERNAL RELEASE---EXTERNAL RELEASE---EXTERNAL RELEASE--- ======= ============ ====== ====== ======= ============== ======= ======= === === ==== ====== ====== === =========== ======= ======= === =========== === ======= === === === ==== === ===== === ======= ============== ===== === ===== ======= ============ ===== = ===== EMERGENCY RESPONSE SERVICE OUTSIDE ADVISORY REDISTRIBUTION 05 August 1996 12:00 GMT Number: ERS-OAR-E01-1996:011.1 =============================================================================== The IBM-ERS Outside Advisory Redistribution is designed to provide customers of the IBM Emergency Response Service with access to the security advisories sent out by other computer security incident response teams, vendors, and other groups concerned about security. IBM makes no representations and assumes no responsibility for the contents or accuracy of the advisories themselves. IBM-ERS is forwarding the following information from NASIRC. Contact information for NASIRC is included in the forwarded text below; please contact them if you have any questions or need further information. =============================================================================== ********************** FORWARDED INFORMATION STARTS HERE ********************** NASIRC BULLETIN B-96-31 July 31, 1996 NetKit-B 0.07A Released =========================================================== NASA Automated Systems Incident Response Capability __ __ __ ___ ___ ____ ____ /_/\ /_/| /_/\ / _/\ /_/| / __/ \ / __/\ | |\ \| || / \ \ | /\/ | || | /\ \/ | | \/ | ||\ \ || / /\ \ \ \ \ | || |_\/ /\ | | | || \ \|| / /--\ \ \ /\_\\ | || | |\ \ \ | \_/\ |_|/ \_|//_/ \_\/ \/__/ |_|/ |_| \_\/ \___\/ Serving NASA and the International Aerospace Communities =========================================================== This bulletin reports a recently announced security vulner- ability. It may contain a workaround or software patch. Bulletins should be considered urgent as vulnera- bility information is likely to be widely known by the time a patch is issued or other solutions are developed. =========================================================== Version 0.07A of NetKit-B, a collection of basic network tools, has been released. Its components have been updated to address many security vulnerabilities. SYSTEMS AFFECTED Systems using NetKit-B version 0.06 or earlier are affected. PROBLEM DESCRIPTION NetKit-B is a collection of various basic network tools (e.g., telnet, ftp, finger, rsh, etc.). NetKit-B is generally packaged for Linux systems but is portable to other UNIX variants. There are known vulnerabilities in various components of older versions of NetKit-B. Most of the vulnerabilities deal with overflowing buffers so that arbitrary commands can be executed. For instance, an old fingerd vulnerability allowed users to enter too many characters for input. These extra characters could include an arbitrary command that would be executed by fingerd. The updated components of NetKit-B include the following: fingerd talkd rlogin rshd rsh ping telnetd RECOMMENDED ACTION Users should replace their network tools with those found in NetKit-B version 0.07A, the most recent collection of basic network tools for Linux. The primary distribution site for NetKit-B-0.07A is as follows: ftp://ftp.uk.linux.org/pub/linux/Networking/base/NetKit-B-0.07A.tar.gz -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- ACKNOWLEDGMENTS: David Holland, maintainer of NetKit-B, for the announcement of this release. BULLETIN AUTHOR: Allen Chen -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This advisory may be forwarded without restriction. Persons within the NASA community or operating in support of a NASA contract may contact NASIRC with any questions about this advisory. Telephone: 1-800-7-NASIRC (1-800-762-7472) FAX: 1-301-441-1853 International: +1-301-441-4398 STU III: 1-301-982-5480 Internet E-Mail: nasirc@nasa.gov 24-Hour/Emergency Pager: 1-800-759-7243/Pin:2023056 WWW: http://nasirc.nasa.gov/NASIRC_home.html FTP: nasirc.nasa.gov, login "anonymous" Anyone requiring assistance or wishing to report a security incident but not operating in support of NASA may contact the Forum of Incident Response and Security Teams (FIRST), an international organization of incident response teams, to determine the appropriate team. A list of FIRST member organizations and their constituencies may be obtained by sending E-mail to "docserver@first.org" with an empty "subject" line and a message body containing the line "send first-contacts" or via WWW at http://www.first.org/ . *********************** FORWARDED INFORMATION ENDS HERE *********************** =============================================================================== IBM's Internet Emergency Response Service (IBM-ERS) is a subscription-based Internet security response service that includes computer security incident response and management, regular electronic verification of your Internet gateway(s), and security vulnerability alerts similar to this one that are tailored to your specific computing environment. By acting as an extension of your own internal security staff, IBM-ERS's team of Internet security experts helps you quickly detect and respond to attacks and exposures across your Internet connection(s). As a part of IBM's Business Recovery Services organization, the IBM Internet Emergency Response Service is a component of IBM's SecureWay(tm) line of security products and services. From hardware to software to consulting, SecureWay solutions can give you the assurance and expertise you need to protect your valuable business resources. To find out more about the IBM Internet Emergency Response Service, send an electronic mail message to ers-sales@vnet.ibm.com, or call 1-800-742-2493 (Prompt 4). IBM-ERS maintains a site on the World Wide Web at http://www.ers.ibm.com/. Visit the site for information about the service, copies of security alerts, team contact information, and other items. IBM-ERS uses Pretty Good Privacy* (PGP*) as the digital signature mechanism for security vulnerability alerts and other distributed information. The IBM-ERS PGP* public key is available from http://www.ers.ibm.com/team-info/pgpkey.html. "Pretty Good Privacy" and "PGP" are trademarks of Philip Zimmerman. IBM-ERS is a Member Team of the Forum of Incident Response and Security Teams (FIRST), a global organization established to foster cooperation and response coordination among computer security teams worldwide. The information in this document is provided as a service to customers of the IBM Emergency Response Service. Neither International Business Machines Corporation, Integrated Systems Solutions Corporation, 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 contained herein, or represents that its use would not infringe any 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 IBM or its subsidiaries. The views and opinions of authors expressed herein do not necessarily state or reflect those of IBM or its subsidiaries, and may not be used for advertising or product endorsement purposes. - ---EXTERNAL RELEASE---EXTERNAL RELEASE---EXTERNAL RELEASE---EXTERNAL RELEASE--- -----BEGIN PGP SIGNATURE----- Version: 2.7.1 iQCVAwUBMgXrzPWDLGpfj4rlAQEI5gP+MnEr0rkcawLmVXR+npgGiMhMYbCjat2G VitKpg7soahfQ5J2rmv8W7nQDmxnQ39HLFEw/H6ol4bq7NCNJLiZOy0vO3OyZksX xgZYmMPhHGG2v9Asl3uazh8On8GdObFQ+aVNGknSTg0zodEveT6zShjOk1fE9kK2 EZ9km+CxN8E= =dc/b -----END PGP SIGNATURE-----