Operating System:


09 July 1997

Protect yourself against future threats.


              AUSCERT External Security Bulletin Redistribution

      ESB-97.084 -- REVISED 01 Hewlett-Packard Security Bulletin #0004
           MPE/iX Sec. Vulnerability with ICMP Echo Request (ping)
                               10 July 1997


Hewlett-Packard has released the following advisory concerning a
vulnerability in the incoming ICMP Echo Request (ping) packets. This
vulnerability may allow external users to cause a system abort.

This following security bulletin is provided as a service to AUSCERT's
members.  As AUSCERT did not write this document, AUSCERT has had no
control over its content.  As such, the decision to use any or all of this
information is the responsibility of each user or organisation, and should
be done so in accordance with site policies and procedures.

Contact information for HP is included in the Security Bulletin below.
If you have any questions or need further information, please contact them

If you believe that your system has been compromised, contact AUSCERT or
your representative in FIRST (Forum of Incident Response and Security

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 4477
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
        AUSCERT personnel answer during Queensland business hours
	which are GMT+10:00 (AEST).
	On call after hours for emergencies.

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Document ID:  HPSBMP9703-004
Date Loaded:  970709
      Title:  MPE/iX Sec. Vulnerability with ICMP Echo Request (ping)

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LAST CHANGE: 08 July 1997
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The information in the following Security Bulletin should be acted upon
as soon as possible.  Hewlett Packard will not be liable for any
consequences to any customer resulting from customer's failure to fully
implement instructions in this Security Bulletin as soon as possible.

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PROBLEM:  Vulnerability with specific incoming ICMP Echo Request (ping)

PLATFORM: All HP3000 Series 900 systems running MPE/iX Release 5.0 and

DAMAGE:   Vulnerability makes it possible for an external user to
          cause a system abort.

**REVISED 01**
SOLUTION: Apply patch NSTEDN1A to systems running MPE/iX Release 5.0
            and its Powerpatches (C.50.00 through C.50.06).
          Apply patch NSTEDL8A to systems running MPE/iX Release 5.5
            and its Powerpatches (C.55.00 through C.55.02).

**REVISED 01**
AVAILABILITY: All patches are available now.

CHANGE SUMMARY: Updated patch ID for MPE/iX Release 5.0;
                New patch available for MPE/iX Release 5.5.
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   A. Background
      A mailing list disclosure described a vulnerability in which
      specific, illegally formatted, incoming ICMP Echo Request (ping)
      traffic could cause a system abort on HP3000 systems.

   B. Recommended solution
      The system administrator needs to obtain and apply the patches
      mentioned above.

   C. Fixing the problem

   1. Obtain the patch
      Obtain the appropriate patch from the HP Electronic Support Center,
      URL:    http://us-support.external.hp.com
           (US,Canada, Asia-Pacific, and Latin America)

              http://europe-support.external.hp.com  (Europe)

      Follow the "Patch Database" hyperlink from the HP Electronic
      Support Center home page.

   2. Apply the patch
      MPE/iX patches are unpacked using the UNPACKP script.  UNPACKP
      runs the MOVER utility to unload the truck file for the patch.
      Hyperlinks for the UNPACKP script and the MPE Patch Installation
      Guide are located on the main page for MPE/iX patches on
      HP Electronic Support Center.

      You need MOVER version A.00.02, EOF (end-of-file) 635, to unload
      MPE/iX patches.  You can download this version of MOVER from
      the HP3000 Web Server at http://jazz.external.hp.com.  Follow
      the Shareware and Sources & Binaries hyperlinks.

   D. To subscribe to automatically receive future NEW HP Security
      Bulletins from the HP SupportLine Digest service via electronic
      mail, do the following:

      1)  From your Web browser, access the URL:

           (for US,Canada, Asia-Pacific, and Latin-America)

           http://europe-support.external.hp.com  (for Europe)

      2)  On the HP Electronic Support Center main screen, select
         the hyperlink "Support Information Digests".

      3)  On the "Welcome to HP's Support Information Digests" screen,
         under the heading "Register Now", select the appropriate
         hyperlink "Americas and Asia-Pacific", or "Europe".

      4)  On the "New User Registration" screen, fill in the fields for
         the User Information and Password and then select the button
         labeled "Submit New User".

      5)  On the "User ID Assigned" screen, select the hyperlink
         "Support Information Digests".

         ** Note what your assigned user ID and password are for
            future reference.

      6)  You should now be on the "HP Support Information Digests Main"
         screen.  You might want to verify that your e-mail address is
         correct as displayed on the screen.  From this screen, you may
         also view/subscribe to the digests, including the security
         bulletins digest.

   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

   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

   Any other use of this information is prohibited.  HP is not liable
   for any misuse of this information by any third party.
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