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96-11

96-11
Posted Sep 23, 1999

96-11

SHA-256 | b66fb6fe5b4e5f06d6f5f2f8fe814269590d163e9c56acc5ed2fc4ac195ce14d

96-11

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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---

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