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Old 10-07-2005, 10:20 AM   #1
rob_of_ownsboro
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Registered: May 2005
Location: Owensboro KY
Distribution: RHEL 4
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suid bit on an executable is ignored during boot process.


I have an executable /usr/local/bin/process_monitor which is owned by the user engineer.
I have set the SUID bit with chmod u+s. I have a scripts which calls this executable passing the required parameters. Upon bootup my script is called from another in /etc/rc5.d. Process_monitor and other processes it forks are ran as root. If I manualy execute this script from when logged in as root process_monitor is ran as engineer being the owner as expected.

OS: RHEL4
 
Old 11-21-2005, 11:34 PM   #2
ahedler
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Registered: Oct 2005
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I think you need to do an su in the startup script to run it as the engineer user. You may actually need to run a different script to call the intended script with su.

-Alan
 
Old 11-22-2005, 01:42 AM   #3
jschiwal
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Registered: Aug 2001
Location: Fargo, ND
Distribution: SuSE AMD64
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I don't believe that suid scripts are allow in linux because they are difficult to secure.

Check out lesson 7 in this page:
http://www.samag.com/documents/s=114...106a/0106a.htm
 
Old 11-22-2005, 12:34 PM   #4
foo_bar_foo
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Registered: Jun 2004
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it might be trying to run the script while the partition is still mounted read only -- i think read only is a non-suid mode.
 
  


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