rcp processes... who should own them?
Mike Marshall
hubcap at hubcap.UUCP
Wed Apr 6 08:39:21 AEST 1988
Greetings:
We have noticed a difference between the way rcp works with Ultrix
(our Ultrix anyway!) and the way it works with "normal" BSD. In both
environments rcp is setuid to root:
(our Ultrix box) -rwsr-xr-x 1 root 46080 Nov 18 01:10 /usr/ucb/rcp
^
|
hmmm...
|
v
(brillig.umd.edu) -rwsr-xr-x 1 root 33792 Sep 2 1987 /bin/rcp
but it appears that with Ultrix an rcp process is owned by root and with
BSD (at least brillig, and a few others we've checked) rcp processes
are owned by whoever cranks them up.
You may wonder why I care: it so happens that the other night, a user
here cranked up an rcp process which for some reason got hung. Since
it was owned by root, this user couldn't "kill -9" it. So it stayed
hung (and we stayed connected to Maryland) until the next morning when
I came into work. It would be nice if users could control processes they
initiate.
So... I wonder if one of you might know the reason that rcp processes initiated
from this machine (780 - 2.2) are owned by root, instead of the user. Also -
I would be interested in hearing any security pros/cons on why Ultrix's
way is better/worse than BSD's way.
-Mike Marshall hubcap at hubcap.clemson.edu ...!hubcap!hubcap
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