AUSCERT External Security Bulletin Redistribution

       ESB-2002.691 -- HP Support Information Digest HPSBUX0212-232
              SSRT2370 Sec. Vulnerability with ntpd on HP-UX
                             12 December 2002


        AusCERT Security Bulletin Summary

Product:                xntpd
Vendor:                 Hewlett-Packard
Operating System:       HP-UX 10.20
                        HP-UX 10.24
                        HP-UX 11.00
                        HP-UX 11.04
                        HP-UX 11.11
Platform:               HP9000 Series 700
                        HP9000 Series 800
Impact:                 Denial of Service

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 Originally issued: 10 Dec 2002
 SSRT2370 Sec. Vulnerability with ntpd on HP-UX 

NOTICE: There are no restrictions for distribution of this Bulletin
provided that it remains complete and intact.

The information in the following Security Bulletin 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 Bulletin as soon as possible.

PROBLEM:  xntpd software may HANG or exhibit extremely poor

IMPACT:   Potential denial of service (DoS).

PLATFORM: HP 9000 Series 700 and 800 running HP-UX releases 10.20, 
          10.24, 11.00, 11.04 and 11.11 using the xntpd software.

SOLUTION: Retrieve and apply the following patches:

          for HP-UX 10.20:          PHNE_24510
          for HP-UX 10.24(VVOS):    PHNE_28002
          for HP-UX 11.00:          PHNE_27223
          for HP-UX 11.04(VVOS):    PHNE_27442
          for HP-UX 11.11:          PHNE_24512


AVAILABILITY:  All patches are currently available from <itrc.hp.com>.
 A. Background
    Some HP-UX systems running the latest xntpd software may HANG
    or exhibit extremely poor performance.

 B. Recommended solution
    HP has made available a patch to upgrade NTP timeservices. 
    Retrieve and apply the following patches to affected systems.
          for HP-UX 10.20:          PHNE_24510
                    10.24(VVOS):    PHNE_28002
                    11.00:          PHNE_27223
                    11.04(VVOS):    PHNE_27442
                    11.11:          PHNE_24512

    The patches do not require a reboot.  The problem is fixed in
    HP-UX release 11.22.    

 C. To subscribe to automatically receive future NEW HP Security
    Bulletins from the HP IT Resource Center via electronic
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    Use your browser to get to the HP IT Resource Center page


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    To -subscribe- to future HP Security Bulletins or other
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    To -review- bulletins already released, select the link
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    To -gain access- to the Security Patch Matrix, select
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    For information on the Security Patch Check tool, see:

    The security patch matrix is also available via anonymous


    On the "Support Information Digest Main" page:
    click on the "HP Security Bulletin Archive".

 D. 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 security-alert@hp.com.


(c) Copyright 2002 Hewlett-Packard Company
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
in this document is subject to change without notice.
Hewlett-Packard Company and the names of HP products referenced
herein are trademarks and/or service marks of Hewlett-Packard
Company.  Other product and company names mentioned herein may be
trademarks and/or service marks of their respective owners.

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