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>>                                                      CERT-NL, 01-Mar-2000 <<
>> All CERT-NL information has been moved to http://cert.surfnet.nl.  Links  <<
>> to CERT-NL information contained in this advisory are therefore outdated. <<
>>                                                                           <<
>> CERT-NL also has stopped the CERT-CC-Mirror service.  Due to this the     <<
>> links to the CERT-CC mirror are obsolete. Visit the CERT-CC site for the  <<
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Security Advisory                                                      CERT-NL
==============================================================================
Author/Source : Niels den Otter                             Index  :   S-99-03
Distribution  : World                                       Page   :         1
Classification: External                                    Version:         1
Subject       : HP security vulnerability with rpc.pcnfsd   Date   : 12-Feb-99
==============================================================================

By courtesy of HEWLETT-PACKARD we received information on a security
vulnerability with rpc.pcnfsd on the HP 9000 series 700/800 platform. This
vulnerability allows remote and local users to gain root access.

CERT-NL recommends to follow the instructions and install the available
patches as mentioned below.

- -------------------------------------------------------------------------
    HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #00091, 08 Febraury 1999
- -------------------------------------------------------------------------

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:  rpc.pcnfsd has an error in its use of the spool directory

PLATFORM: HP 9000 series 700/800.

DAMAGE:   Remote and local users can compromise root access.

SOLUTION: Install _all_ applicable patches listed below.  Reboot required.

AVAILABILITY:  All patches are available now.

- -------------------------------------------------------------------------
I.
   A. Background
      rpc.pcnfsd is a remote procedure call used by NFS clients which is
      a service providing username and password authentication for system
      which have NFS client software installed.
      If exploited, this defect allows the main printer spool directory
      used by rpc.pcnfsd to be made world writeable.

   B. Fixing the problem
      This involves installing a series of patches which require
      rebooting the system.  The main patch requires a libc patch,
      which in turn requires a kernal patch.

        For HP-UX 10.01:                        PHNE_17248
        For HP-UX 10.10:                        PHNE_17248
        For HP-UX 10.20:                        PHNE_17098
        For HP-UX 11.00:                        PHNE_16470

      The following sets of patches will need to be installed to resolve
      all the documented patch dependencies.  The dependencies will be
      satisfied by the patches listed, or any patch that supersedes them:

        s700 10.01:     PHNE_17248, PHKL_7059,  PHCO_14253;
        s800 10.01:     PHNE_17248, PHKL_7060,  PHCO_14253;
        s700 10.10:     PHNE_17248, PHKL_8292,  PHCO_14254;
        s800 10.10:     PHNE_17248, PHKL_8293,  PHCO_14254;
        s700 10.20:     PHNE_17098, PHKL_9155,  PHKL_16750,
                        PHCO_13777, PHCO_12922, PHCO_17389,
                        PHNE_16237, PHKL_16959, PHKL_17012,
                        PHKL_17253, PHKL_12007;
        s800 10.20:     PHNE_17098, PHKL_9156,  PHKL_16751,
                        PHCO_13777, PHCO_12922, PHCO_17389,
                        PHNE_17097, PHKL_16957, PHKL_17013,
                        PHKL_17254, PHKL_12008;
        s700 11.00:     PHNE_16470, PHCO_16629, PHKL_15689,
                        PHCO_14625;
        s800 11.00:     PHNE_16470, PHCO_16629, PHKL_15689,
                        PHCO_14625.

      NOTE: This problem is fixed fully in HP-UX release 11.01.

   C. 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
      at:

        http://us-support.external.hp.com
               (for US, Canada, Asia-Pacific, & Latin-America)
        http://europe-support.external.hp.com     (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 "Search Technical Knowledge Database."

      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 categorizes security
      patches by platform/OS release, and by bulletin topic.

      The security patch matrix is also available via anonymous ftp:

      us-ffs.external.hp.com
      ~ftp/export/patches/hp-ux_patch_matrix

   D. To report new security vulnerabilities, send email to

       security-alert@hp.com

      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.

     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.
________________________________________________________________________

===========================================================================
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