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TUCoPS :: HP/UX :: ciach009.txt

HP 9000 Access Vulnerability





             __________________________________________________________

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

                             INFORMATION BULLETIN

                          HP 9000 Access Vulnerability

December 5, 1996 19:00 GMT                                         Number H-09
______________________________________________________________________________
PROBLEM:       A vulnerability with the use of user or group id's greater than
               60000.
PLATFORM:      HP 9000 series 700/800 systems running version 10.20
DAMAGE:        Allows for an increase in capability and unauthorized access.
SOLUTION:      Until futher notice do not use any uid's greater than 60000.
               Modify all such accounts by assigning them uid's and gid's less
               than 60000.
______________________________________________________________________________
VULNERABILITY  The information on this vulnerability should be acted upon as
ASSESSMENT:    soon as possible to avoid possible unauthorized access. No
               patches are available at this time.
______________________________________________________________________________

[ Start Hewlett Parkard Advisory ]

______________________________________________________________________________

HEWLETT-PACKARD SECURITY ADVISORY: #00041, 21 November 1996
______________________________________________________________________________

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

------------------------------------------------------------------------------

PROBLEM:  Use of user or group id's greater than 60000

PLATFORM: HP 9000 series 700/800 systems running version 10.20

DAMAGE:   Increase in capability and unauthorized access

SOLUTION: Until further notice do not use any uid's or gid's greater
          than 60000.  Modify all such accounts by assigning them uid's
          and gid's less than 60000.

AVAILABILITY: The availability of patches or procedures to allow the 
              safe use of large user and group id's will be announced in 
              a future Security Bulletin.
------------------------------------------------------------------------------

I.
   A. Background
      Large user and group id's are a new feature of HP-UX revision 
      10.20.

   B. Fixing the problem
      Do not use large user and group id's.

   C. Recommended solution
      Use SAM to change all accounts that have large user or group id's.

      For all groups with gid's greater than 60000:

       Select the Accounts for Users and Groups...Users menu in SAM.
       Modify the accounts in the group with the large group ids to use
       a group with an id less than 60000.

       Select the Accounts for Users and Groups...Groups menu in SAM
       and remove the group with the large gid.

      For all accounts with uid's greater than 60000:

       Select the Accounts for Users and Groups...Users menu in SAM.
       Modify all accounts with large uid's by assigning those accounts
       a uid less than 60000.


   D. Impact of the patch
      No patch is available at this time.


   E. 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:

      http://us-support.external.hp.com (US,Canada, Asia-Pacific, and
      Latin-America)

      http://europe-support.external.hp.com  (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 email address is
      correct as displayed on the screen.  From this screen, you may
      also view/subscribe to the digests, including the security 
      bulletins digest.


   F. 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 Advisory to
     Hewlett-Packard (HP) customers (or the Internet community) for the
     purpose of alerting them to problems, if and only if, the Advisory 
     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 Hewlett Parkard Advisory ]

_______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Hewlett Parkard 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:    +1 510-422-8193
    FAX:      +1 510-423-8002
    STU-III:  +1 510-423-2604
    E-mail:   ciac@llnl.gov

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 510-422-8193 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:      http://ciac.llnl.gov/
   Anonymous FTP:       ciac.llnl.gov (128.115.19.53)
   Modem access:        +1 (510) 423-4753 (28.8K baud)
                        +1 (510) 423-3331 (28.8K baud)

CIAC has several self-subscribing mailing lists for electronic
publications:
1. CIAC-BULLETIN for Advisories, highest priority - time critical
   information and Bulletins, important computer security information;
2. CIAC-NOTES for Notes, a collection of computer security articles;
3. SPI-ANNOUNCE for official news about Security Profile Inspector
   (SPI) software updates, new features, distribution and
   availability;
4. 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 ListProcessor, 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, CIAC-NOTES, SPI-ANNOUNCE or SPI-NOTES for list-name and
valid information for LastName FirstName and PhoneNumber when sending

E-mail to       ciac-listproc@llnl.gov:
        subscribe list-name LastName, FirstName PhoneNumber
  e.g., subscribe ciac-notes OHara, Scarlett W. 404-555-1212 x36

You will receive an acknowledgment containing address, initial PIN,
and information on how to change either of them, cancel your
subscription, or get help.

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 by sending email to
docserver@first.org with an empty subject line and a message body
containing the line: send first-contacts.

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)

G-46: Vulnerabilities in Transarc DCE and DFS 
G-47: Unix FLEXlm Vulnerabilities
G-48: TCP SYN Flooding and IP Spoofing Attacks
H-01: Vulnerabilities in bash
H-02: SUN's TCP SYN Flooding Solutions
H-03: HP-UX_suid_Vulnerabilities
H-04: HP-UX  Ping Vulnerability
H-05: Internet Hoaxes
H-07: Sendmail SIGHUP-smtpd Vulnerability
H-08: lpr Buffer Overrun Vulnerability

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Notes 11 - 7/31/95     Virus Update, Hats Off to Administrators,
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