Archive of CERT general posting, CERT Summary CS-2000-01

01/03/00, CERT Summary CS-2000-01
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To: cert-advisory@cert.org
Subject: CERT Summary CS-2000-01
From: CERT Advisory <cert-advisory@cert.org>
Date: Tue, 29 Feb 2000 13:15:03 -0500 (EST)
Organization: CERT(R) Coordination Center - +1 412-268-7090
Reply-To: cert-advisory-request@cert.org

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CERT Summary CS-2000-01

   Tuesday, February 29, 2000
   
   Each quarter, the CERT Coordination Center (CERT/CC) issues the CERT
   Summary to draw attention to the types of attacks reported to our
   incident response team, as well as other noteworthy incident and
   vulnerability information. The summary includes pointers to sources of
   information for dealing with the problems.
   
   Past CERT summaries are available from
   http://www.cert.org/summaries/
   ______________________________________________________________________
   
Recent Activity

   Since the last regularly scheduled CERT summary, issued November 1999
   (CS-99-04), we have published information on distributed
   denial-of-service tools and developments. We also continue to receive
   reports of intruders compromising machines by exploiting
   vulnerabilities in BIND, Vixie Cron, WU-FTPD, and RPC services.
   Additionally, we have published information on malicious HTML tags
   embedded in client web requests.
   
    1. Distributed Denial-of-Service Developments
       We continue to receive reports of intruders compromising machines
       in order to install software used for launching packet flooding
       denial-of-service attacks. For more information, please see
        CERT Incident Note IN-2000-01 Windows Based DDOS Agents
            http://www.cert.org/incident_notes/IN-2000-01.html
            CERT Advisory CA-2000-01 Denial-of-Service Developments
            http://www.cert.org/advisories/CA-2000-01.html
            CERT Advisory CA-99-17 Denial-of-Service Tools
            http://www.cert.org/advisories/CA-99-17-denial-of-service-too
            ls.html
            CERT Incident Note IN-99-07 Distributed Denial of Service
            Tools
            http://www.cert.org/incident_notes/IN-99-07.html
            Results of the Distributed-Systems Intruder Tools Workshop
            http://www.cert.org/reports/dsit_workshop-final.html
    2. BIND Vulnerabilities
       We continue to receive reports of intruders compromising machines
       by exploiting vulnerabilities in BIND. For more information,
       please see
        CERT Advisory CA-99-14 Multiple Vulnerabilities in BIND
            http://www.cert.org/advisories/CA-99-14-bind.html
    3. Multiple Vulnerabilities in Vixie Cron
       Compromises involving the exploitation of several vulnerabilities
       in the Vixie Cron program have recently been reported to the
       CERT/CC. These vulnerabilities, including two that were first
       discussed publicly in August 1999, allow local users to gain root
       access. More information about these vulnerabilities, including
       pointers to patch information, is available in our recently
       published Vulnerability Note VN-2000-01:
       
        CERT Vulnerability Note VN-2000-01 Multiple Vulnerabilities in
                Vixie Cron
                http://www.cert.org/vul_notes/VN-2000-01.html
                
   
    4. Root Compromises
       We continue to see root compromises as a result of vulnerabilities
       in WU-FTPD, AMD, and various RPC-related services. For more
       information, please see
        CERT Advisory CA-99-13 Multiple Vulnerabilities in WU-FTPD
            http://www.cert.org/advisories/CA-99-13-wuftpd.html
            CERT Advisory CA-99-12 Buffer Overflow in amd
            http://www.cert.org/advisories/CA-99-12-amd.html
            CERT Incident Note 99-04 Similar Attacks Using Various RPC
            Services
            http://www.cert.org/incident_notes/IN-99-04.html
    5. Malicious HTML Tags Embedded in Client Web Requests
       The CERT/CC has published information regarding web sites that may
       inadvertently include malicious HTML tags or script in a
       dynamically generated page based on unvalidated input from
       untrustworthy sources. For more information, please see
        CERT Advisory CA-2000-02 Malicious HTML Tags Embedded in Client
            Web Requests
            http://www.cert.org/advisories/CA-2000-02.html
   ______________________________________________________________________
   
"CERT/CC Current Activity" Web Page

   The CERT/CC Current Activity web page is a regularly updated summary
   of the most frequent, high-impact types of security incidents and
   vulnerabilities currently being reported to the CERT/CC. It is
   available from
   
   http://www.cert.org/current/current_activity.html
       
   The information on the Current Activity page is reviewed and updated
   as reporting trends change.
   ______________________________________________________________________
   
Year 2000 (Y2K) Information

   We continue to regularly update reports on our web site to inform the
   community of activity being reported to us by other response teams and
   sites. We will continue to update these reports through February 29,
   "leap day." For more information, please see
   
   CERT/CC and FedCIRC Year 2000 (Y2K) Status Reports
       http://www.cert.org/y2k-info/y2k-status.html
       Potential Computer Behavior on February 29, 2000
       http://www.cert.org/y2k-info/leapyear_est.html
   ______________________________________________________________________
   
What's New and Updated

   Since the last CERT summary, we have developed new and updated
     * Advisories
     * CERT statistics
     * Incident notes
     * Tech tips/FAQs
     * Y2K information
     * Announcements of Training Courses
     * CERT/CC annual report
     * Copies of Congressional testimony by our staff
       
   There are descriptions of these documents and links to them on our
   "What's New" web page at
   http://www.cert.org/nav/whatsnew.html
   ______________________________________________________________________
   
   This document is available from:
   http://www.cert.org/summaries/CS-2000-01.html
   ______________________________________________________________________
   
CERT/CC Contact Information

   Email: cert@cert.org
          Phone: +1 412-268-7090 (24-hour hotline)
          Fax: +1 412-268-6989
          Postal address:
          CERT Coordination Center
          Software Engineering Institute
          Carnegie Mellon University
          Pittsburgh PA 15213-3890
          U.S.A.
          
   CERT personnel answer the hotline 08:00-20:00 EST(GMT-5) / EDT(GMT-4)
   Monday through Friday; they are on call for emergencies during other
   hours, on U.S. holidays, and on weekends.
   
Using encryption

   We strongly urge you to encrypt sensitive information sent by email.
   Our public PGP key is available from
   
   http://www.cert.org/CERT_PGP.key
       
   If you prefer to use DES, please call the CERT hotline for more
   information.
   
Getting security information

   CERT publications and other security information are available from
   our web site
   
   http://www.cert.org/
       
   To be added to our mailing list for advisories and bulletins, send
   email to cert-advisory-request@cert.org and include SUBSCRIBE
   your-email-address in the subject of your message.
   
   Copyright 1999 Carnegie Mellon University.
   Conditions for use, disclaimers, and sponsorship information can be
   found in
   
   http://www.cert.org/legal_stuff.html
       
   * "CERT" and "CERT Coordination Center" are registered in the U.S.
   Patent and Trademark Office.
   ______________________________________________________________________
   
   NO WARRANTY
   Any material furnished by Carnegie Mellon University and the Software
   Engineering Institute is furnished on an "as is" basis. Carnegie
   Mellon University makes no warranties of any kind, either expressed or
   implied as to any matter including, but not limited to, warranty of
   fitness for a particular purpose or merchantability, exclusivity or
   results obtained from use of the material. Carnegie Mellon University
   does not make any warranty of any kind with respect to freedom from
   patent, trademark, or copyright infringement.

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