TUCoPS :: HP/UX :: ciacl093.txt

CIAC L-093 HP-UX kmmodreg Vulnerability


                       The U.S. Department of Energy
                     Computer Incident Advisory Center
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                             INFORMATION BULLETIN

                          HP-UX kmmodreg Vulnerability
               [Hewlett-Packard Company Security Bulletin #0153]

June 12, 2001 17:00 GMT                                           Number L-093
PROBLEM:       The /usr/sbin/kmmodreg command inappropriately handles files. 
PLATFORM:      HP9000 series 700/800 running HP-UX releases 11.XX only 
DAMAGE:        Potential privilege escalation or denial of service 
SOLUTION:      Apply appropriate patch as indicated below 
VULNERABILITY  The risk is MEDIUM: The command is executed automatically at 
ASSESSMENT:    every system reboot. 

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


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:  The kmmodreg(1M) inappropriately handles files.

PLATFORM: HP9000 Series 700/800 running HP-UX releases 11.XX only.

DAMAGE:   Potential increase in privilege.

SOLUTION: Install the appropriate patch for the HP-UX release:
             11.11                          PHCO_24147,
             11.04                          PHCO_24197,
             11.00                          PHCO_24112.

AVAILABILITY:  The patches are available now.
I.    Background
      Hewlett-Packard Company has discovered that the /usr/sbin/kmmodreg
      command incorrectly performs its functions, causing a serious
      potential for a denial of service attack or an increase of
      This command is executed automatically at every system reboot.

II.   Recommended solution
      Application of the appropriate patch selected from the list below
      completely solves this problem.

      For HP-UX releases:
                 11.11                          PHCO_24147,
                 11.04                          PHCO_24197,
                 11.00                          PHCO_24112.

III.   To subscribe to automatically receive future NEW HP Security
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IV.    To report new security vulnerabilities, send email to


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

CIAC wishes to acknowledge the contributions of Hewlett-Packard Company 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
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