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TUCoPS :: HP/UX :: ciacl115.txt

CIAC L-115 Hewlett-Packard dlkm Vulnerability




             __________________________________________________________

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

                             INFORMATION BULLETIN

                      Hewlett-Packard login Vulnerability
                   [Hewlett-Packard Security Bulletin #0160]

July 17, 2001 22:00 GMT                                           Number L-114
______________________________________________________________________________
PROBLEM:       The login(1) command allows restricted shell users to 
               circumvent security checks.
PLATFORM:      HP9000 Series 700/800 running HP-UX releases 11.00, 11.11, and 
               10.20. 
DAMAGE:        Restricted shell users can gain unauthorized access. 
SOLUTION:      Apply the appropriate patch for the HP-UX release as prescribed 
               by Hewlett Packard. 
______________________________________________________________________________
VULNERABILITY  The risk is MEDIUM. The vulnerability in login can allow 
ASSESSMENT:    restricted shell users to execute unauthorized commands and 
               possibly break out of the restricted shell. 
______________________________________________________________________________

[******  Start Hewlett-Packard Security Bulletin ******]

------------------------------------------------------------------------
    HEWLETT-PACKARD COMPANY SECURITY BULLETIN: #0160, 17 July '01
------------------------------------------------------------------------

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.

------------------------------------------------------------------------
ISSUE:    The login(1) command allows restricted shell users to
          circumvent security checks.

PLATFORM: HP9000 Series 700/800 running HP-UX releases 11.00, 11.11,
          and 10.20.

DAMAGE:   Restricted shell users can gain unauthorized access.

SOLUTION: Install the appropriate patch for the HP-UX release:
           11.00                       PHCO_24083,
           11.11                       PHCO_23900,
           10.20                       PHCO_24267.

AVAILABILITY:  All patches are available now.
------------------------------------------------------------------------
I.   Background
     Hewlett-Packard Company has learned of a defect in login which
     allows restricted shell users to execute unauthorized commands
     and possibly break out of the restricted shell.

II.  Recommended actions
     Apply the appropriate patch as listed herein:
           11.11                       PHCO_23900,
           11.00                       PHCO_24083,
           10.20                       PHCO_24267.


III. To subscribe to automatically receive future NEW HP Security
     Bulletins from the HP IT Resource Center via electronic mail,
     do the following:

     Use your browser to get to the HP IT Resource Center page
     at:

       http://itrc.hp.com

     Use the 'Login' tab at the left side of the screen to login
     using your ID and password.

     Use the 'Login' tab at the left side of the screen to login
     using your ID and password.  Use your existing login or the
     "Register" button at the left to create a login, in order to
     gain access to many areas of the ITRC.  Remember to save the
     User ID assigned to you, and your password.

     Under the "Notifications" section (near the bottom of the
     page), select "Support Information Digests".

     To -subscribe- to future HP Security Bulletins or other
     Technical Digests, click the check box (in the left column)
     for the appropriate digest and then click the "Update
     Subscriptions" button at the bottom of the page.

     or

     To -review- bulletins already released, select the link
     (in the middle column) for the appropriate digest.

     To -gain access- to the Security Patch Matrix, select
     the link for "hp security bulletins archive" near the bottom.
     Once in the archive the top link is 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:

     ftp.itrc.hp.com:~ftp/export/patches/hp-ux_patch_matrix

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


IV. 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.

[******  End Hewlett-Packard Security Bulletin ******]

_______________________________________________________________________________

CIAC wishes to acknowledge the contributions of Hewlett-Packard for the 
information contained in this bulletin.
_______________________________________________________________________________


CIAC, the Computer Incident Advisory Center, 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:    +1 925-422-8193 (7x24)
    FAX:      +1 925-423-8002
    STU-III:  +1 925-423-2604
    E-mail:   ciac@ciac.org

Previous CIAC notices, anti-virus software, and other information are
available from the CIAC Computer Security Archive.

   World Wide Web:      http://www.ciac.org/
   Anonymous FTP:       ftp.ciac.org

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 via WWW at http://www.first.org/.

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.

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