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TUCoPS :: HP/UX :: ciaci082.txt

HP-UX Netscape Servers Vulnerability



                       The U.S. Department of Energy
                    Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___

                             INFORMATION BULLETIN

                      HP-UX Netscape Servers Vulnerability

August 6, 1998 15:00 GMT                                          Number I-082
PROBLEM:       A vulnerability has been identified that affects the use of RSA
               Data Security encryption algorithms with Netscape server
               products that support Secure Sockets Layer (SSL).
PLATFORM:      HP9000 Series 7/800 running HP-UX releases 10.X and 11.00.
DAMAGE:        If exploited, this vulnerability could potentially be used to
               discover the key for a particular encrypted session through a
               process of repeatedly sending approximately one million
               carefully constructed messages to a target server and observing
               the server's response.
SOLUTION:      Apply available patches.
VULNERABILITY  Hewlett-Packard recommends that the information in this
ASSESSMENT:    advisory should be acted upon as soon as possible.

[ Start Hewlett-Packard Advisories ]

Document ID:  HPSBUX9807-080
Date Loaded:  19980728
      Title:  Security Advisory with Netscape servers on HP-UX

- -------------------------------------------------------------------------
         HEWLETT-PACKARD SECURITY ADVISORY: #00080, 29 July 1998
- -------------------------------------------------------------------------

The information in the following Security Advisory should be acted upon
as soon as possible.  Hewlett-Packard Company will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Advisory as soon as possible.

- -------------------------------------------------------------------------
PROBLEM:   The Million Question vulnerability affects the use of RSA
           Data Security encryption algorithms with Netscape server
           products that support Secure Sockets Layer (SSL).  The nature
           of the vulnerability is that a single encrypted SSL network
           conversation could be recorded and subsequently decrypted.

PLATFORM:  HP9000 Series 7/800 running HP-UX releases 10.X and 11.00

DAMAGE:    A cryptanalytic vulnerability could potentially be used to
           discover the key for a particular encrypted session through
           a process of repeatedly sending approximately one million
           carefully constructed messages to a target server and
           observing the server's response.

SOLUTION:  Patches for can be downloaded from Netscape directly.
           See below for the URL.

AVAILABILITY:  All patches for 3.X servers are available now.  Older
           versions will be available soon.  For updated information
           on availability please check:
- -------------------------------------------------------------------------
  A. Background

     According to RSA Data Security, Inc.,  this potential attack
     against secure Web communications is currently the subject of
     research and has not been reported by any users.

     CERT has made a technical advisory on this vulnerability available

  B. Fixing the problem

     The following servers and products are affected.

     Servers impacted:
      FastTrack, Enterprise and Proxy.
       Patches are available for those three Servers.

     Messaging and Collabora.
      Product replacements are available for these two Servers.

  C. Recommended solution

     The URL is:

     A README file is included with each package and has detailed
     instructions for installing the patch, for Enterprise and Proxy
     Server customer.  Please ensure you download the correct version.
     There is an international version (for customer outside US) as
     well as a domestic version (for customer within US and Canada).

     Netscape believes deployments with higher vulnerability are:

     FastTrack/Enterprise Server applications using SSL to protect
     communication of sensitive data over the Internet, Proxy servers
     in secure reverse proxy mode protecting sensitive communications,
     Messaging and Collabra Servers run exclusively in SSL mode over
     an unprotected network.

     HP recommends that products deployed in the above situations be
     updated as soon as is practical.

  D. To subscribe to automatically receive future NEW HP Security
     Bulletins from the HP Electronic Support Center via electronic
     mail, do the following:

     Use your browser to get to the HP Electronic Support Center page
              (for US, Canada, Asia-Pacific, & Latin-America)     (for Europe)

     Login with your user ID and password (or register for one).
     Remember to save the User ID assigned to you, and your password.
     Once you are in the Main Menu:
      To -subscribe- to future HP Security Bulletins,
       click on "Support Information Digests".
      To -review- bulletins already released from the main Menu,
       click on the "Technical Knowledge Database (Security Bulletins
     Near the bottom of the next page, click on "Browse the HP Security
     Bulletin Archive".
     Once in the archive there is another link to our current Security
     Patch Matrix.  Updated daily, this matrix is categorizes security
     patches by platform/OS release, and by bulletin topic.

  E. To report new security vulnerabilities, send email to

     Please encrypt any exploit information using the security-alert
     PGP key, available from your local key server, or by sending a
     message with a -subject- (not body) of 'get key' (no quotes) to

     Netscape, Messaging, Collabora, FastTrack/Enterprise Server and
     Netscape Server are trademarks of Netscape Communications Corp.

     Permission is granted for copying and circulating this Bulletin to
     Hewlett-Packard (HP) customers (or the Internet community) for the
     purpose of alerting them to problems, if and only if, the Bulletin
     is not edited or changed in any way, is attributed to HP, and
     provided such reproduction and/or distribution is performed for
     non-commercial purposes.

     Any other use of this information is prohibited. HP is not liable
     for any misuse of this information by any third party.
- -----End of Document ID:  HPSBUX9807-080--------------------------------------

[ End Hewlett-Packard Advisories ]

CIAC wishes to acknowledge the contributions of Hewlett-Packard  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

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:
                        (or -- they're the same machine)
   Anonymous FTP:
                        (or -- 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
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
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 or
        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

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.

LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC)

I-072: SunOS Solaris Vulnerabilities (libnsl, SUNWadmap)
I-073: multiscan ('mscan') Tool
I-074: Buffer Overflow in Some Implementations of IMAP Servers
I-075: Microsoft Office 98 Security Vulnerability
I-076: SGI IRIX ioconfig(1M) and disk_bandwidth(1M) Vulnerability
I-077: Mime Name Vulnerability in Outlook and Messenger
I-078: HP-UX ftp Security Vulnerability
I-079: IBM AIX "sdrd" daemon Vulnerability
I-080: Microsoft Exchange Denial of Service Attacks
I-081: HP UX & MPEix Predictive Vulnerability

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