Subject: Re: 'shutdown' setuid?
To: Simon Burge <>
From: Steven M. Bellovin <>
List: netbsd-users
Date: 12/03/2002 23:14:07
In message <>, Simon Burge 
>Steve Bellovin wrote:
>> Why is /sbin/shutdown setuid root on 1.6 and -current?  (I haven't checked
>> any other versions.)  The code ensures that it's running as root, which 
>> is reasonable -- but if it's setuid, it always will be.
>> (I agree that on single-user machines, it's a reasonable thing to do.  
>> But the owner can do that on a per-machine basis.)
>It's also only executable by group operator:
>	-r-sr-xr--  1 root  operator  270144 Aug  4 01:14 /sbin/shutdown*
>so operator folk can reboot the computer.

Tnx -- I looked explicitly at that, and missed it.

		--Steve Bellovin, (me) ("Firewalls" book)