Security Vulnerability with ICMP echo requests (ping)

Security Vulnerability with ICMP echo requests (ping)

Post by Security Ale » Fri, 01 Nov 1996 04:00:00



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      HEWLETT-PACKARD SECURITY BULLETIN: #000040, 30 October 1996
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Hewlett-Packard recommends that 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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for any misuse of this information by any third party.

_______________________________________________________________________
PROBLEM:  Vulnerability with specific incoming ICMP Echo Request (ping)
          packets.
PLATFORM: HP9000 Series 700 and 800 systems.
DAMAGE:   Vulnerability makes it possible for an external user to
          cause a system reboot.
SOLUTION: Apply the following patch:

          Patch Name(Platform/OS)   | Notes
          --------------------------+----------------------------------
          PHNE_9027 (s700 9.01)     : PHNE_7704 must first be installed
          PHNE_9028 (s700 9.03/5/7) : PHNE_7252 must first be installed
          PHNE_9030 (s700 10.00)    :             No patch dependencies
          PHNE_9032 (s700 10.01)    : PHNE_8168 must first be installed
          PHNE_9034 (s700 10.10)    : PHNE_8063 must first be installed
          PHNE_9036 (s700 10.20)    :             No patch dependencies
          --------------------------+----------------------------------
          PHNE_8672 (s800 9.00)     : PHNE_7197 must first be installed
          PHNE_9029 (s800 9.04)     : PHNE_7317 must first be installed
          PHNE_9031 (s800 10.00)    :             No patch dependencies
          PHNE_9033 (s800 10.01)    : PHNE_8169 must first be installed
          PHNE_9035 (s800 10.10)    : PHNE_8064 must first be installed
          PHNE_9037 (s800 10.20)    :             No patch dependencies
          --------------------------+----------------------------------

          Due to the critical nature of this defect, HP is introducing
          this as a non-cumulative patch.  As a result, in cases where
          a dependency exists, the current ARPA Transport cumulative
          patch will need to be installed first.  The two can be
          installed in the same session to minimize system downtime,
          but the prerequisite patch must be loaded first.
          Installation will fail if this is not the case.

AVAILABILITY: All patches are available now.  
_______________________________________________________________________

I. Update

   A. Problem description

   A recent mailing list disclosure described a vulnerability in which
   specific, illegally formatted, incoming ICMP Echo Request (ping)
   traffic could cause a system reboot on some HP9000 Series 700,
   and 800 systems running HP-UX releases 9.X and 10.X.  HP9000 Series
   300 and 400 systems have not been found to be vulnerable.

   B. Fixing the problem

   The vulnerability can be eliminated from HP-UX releases 9.X and 10.X
   by applying either one or two patches.

   C. How to Install the Patch:

     1.  Determine which patch(es) are appropriate for your hardware
         platform and operating system.

     2.  Hewlett-Packard's HP-UX patches are available via email
         and the World Wide Web

         To obtain a copy of the Hewlett-Packard SupportLine email
         service user's guide, send the following in the TEXT PORTION

         is required):

                               send guide

         The users guide explains the HP-UX patch downloading process
         via email and other services available.

         World Wide Web service for downloading of patches
         is available via our URL:
                  (http://us.external.hp.com)

     3.  Apply the patch(es) to your HP-UX system.  In cases where
         a dependency exists, the current ARPA Transport cumulative
         patch will need to be installed first.  The two can be
         installed in the same session to minimize system downtime,
         but the prerequisite patch must be loaded first.  Installation
         will fail if this is not the case.

     4.  Examine /tmp/update.log (9.X), or /var/adm/sw/swinstall.log
         (10.X), for any relevant WARNINGs or ERRORs.

   D. Impact

   The patches for HP-UX releases 9.X and 10.X provide enhancements
   in the ARPA Transport stack to avoid this vulnerability.

   E. HP SupportLine

   To subscribe to automatically receive future NEW HP Security
   Bulletins from the HP SupportLine mail service via electronic mail,
   send an email message to:


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   send the following in the TEXT PORTION OF THE MESSAGE:

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   referenced by either Security Bulletin or Platform/OS, put the
   following in the text portion of your message:

          send hp-ux_patch_matrix

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   our URL:
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          Choose "Support news", then under Support news,
          choose "Security Bulletins"

   F. To report new security vulnerabilities, send email to


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   message with a -subject- (not body) of 'get key' (no quotes) to

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