From ciac@rumpole.llnl.gov Wed Sep 1 15:12:14 1999 From: CIAC Mail User Resent-From: mea culpa To: ciac-bulletin@rumpole.llnl.gov Resent-To: jericho@attrition.org Date: Tue, 31 Aug 1999 07:16:40 -0700 (PDT) Subject: CIAC Bulletin J-061: Lotus Notes Domino Server DOS Attacks [ For Public Release ] -----BEGIN PGP SIGNED MESSAGE----- __________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Lotus Notes Domino Server Denial of Service Attacks August 25, 1999 17:00 GMT Number J-061 ______________________________________________________________________________ PROBLEM: An overflow problem in the Notes LDAP Service (NLDAP). PLATFORM: Lotus Notes Domino Server 4.6. DAMAGE: An attacker could cause a denial of service. SOLUTION: Upgrade to Maintenance release 4.6.6 or 5.0. ______________________________________________________________________________ VULNERABILITY Risk is low because no data is lost and the system security ASSESSMENT: is not breached. ______________________________________________________________________________ [ Start ISS Advisory ] ISS Security Advisory August 23, 1999 Denial of Service Attack against Lotus Notes Domino Server 4.6 Synopsis: Lotus Domino Server is an integrated messaging and web application server. An attacker can crash the Lotus Notes Domino server and stop e-mail and other services that Domino provides for an organization. Description: There is an overflow problem in the Notes LDAP Service (NLDAP); the service that handles the LDAP protocol. This overflow is related to the way that NLDAP handles the ldap_search request. By sending a large amount of data to the parameter in the ldap_search request, an attacker can cause a PANIC in the Domino Server. This will allow an attacker to stop all Domino services running on the affected machine. Affected Versions: Lotus Notes Domino server 4.6. Recommended Action: Upgrade to Maintenance release 4.6.6 or 5.0. Additional Information: Information in this advisory was obtained by the research of Caleb Sima of the ISS X-Force. ISS X-Force would like to thank Lotus Development Corporation for their response and handling of this vulnerability. ________ About ISS: ISS leads the market as the source for e-business risk management solutions, serving as a trusted security provider to thousands of organizations including 21 of the 25 largest U.S. commercial banks and more than 35 government agencies. With its Adaptive Security Management approach, ISS empowers organizations to measure and manage enterprise security risks within Intranet, extranet and electronic commerce environments. Its award-winning SAFEsuite(r) product line of intrusion detection, vulnerability management and decision support solutions are vital for protection in today's world of global connectivity, enabling organizations to proactively monitor, detect and respond to security risks. Founded in 1994, ISS is headquartered in Atlanta, GA with additional offices throughout the U.S. and international operations in Australia/New Zealand, Belgium, France, Germany, Japan, Latin America and the UK. For more information, visit the ISS Web site at www.iss.net or call 800-776-2362. Copyright (c) 1999 by Internet Security Systems, Inc. Permission is hereby granted for the redistribution of this Alert electronically. It is not to be edited in any way without express consent of the X-Force. If you wish to reprint the whole or any part of this Alert in any other medium excluding electronic medium, please e-mail xforce@iss.net for permission. Disclaimer The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. X-Force PGP Key available at: http://xforce.iss.net/sensitive.php3 as well as on MIT's PGP key server and PGP.com's key server. Please send suggestions, updates, and comments to: X-Force xforce@iss.net of Internet Security Systems, Inc. [ End ISS Advisory ] ______________________________________________________________________________ CIAC wishes to acknowledge Internet Security Systems, Inc. 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. 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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. 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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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