Article View: comp.sys.dec
Article #3018REXECD-Problem 3.1->4.0 (Warning)
From: Peter Davids
Date: Fri, 25 Jan 1991 15:04
Date: Fri, 25 Jan 1991 15:04
33 lines
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1628 bytes
Good afternoon! Some weeks ago somebody posted that there was a problem with rexecd (/usr/etc/rexecd) on Ultrix 4.0! We have Ultrix 4.0 (rev179) installed a didn't succeed in getting MacX working (stream came up halfway.... was the errormessage on the Mac-side). The solution was posted to remove the new (4.0) rexecd with an older one, for example from Ultrix 3.1. I did it and MacX worked fine. So did some other application which use rexecd! BUT !!!!! There is a dangerous trap in this solution! If you use MacX and start an 'xterm' on an Ultrix machine you suddenly have group-ID 0 (this is the systemgroup!!!!) Now you are able to write to /etc for example! This should (must) not happen!!! A college of mine phoned with DEC-Fieldservice (here in Germany/Frank- furt a.M.) and they sent (quiet fast!) a patch! This version is o.k.. When I log in now, i have gid=15 (users) which is the correct one! Good luck with other Ultrix-Problems!!! P. Davids (davids@informatik.rwth-aachen.de) -- _________________________________________________________________________ Peter Davids Lehrstuhl fuer Informatik IV RWTH Aachen D-5100 Aachen Tel. +241-8021411 Fax: +241-806295 davids@informatik.rwth-aachen.de
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!fub!opal!unido!rwthinf!forst!davids From: davids@forst.informatik.rwth-aachen.de (Peter Davids) Newsgroups: comp.sys.dec Subject: REXECD-Problem 3.1->4.0 (Warning) Message-ID: <davids.664815884@forst> Date: 25 Jan 91 15:04:44 GMT Sender: news@rwthinf.UUCP Distribution: comp Lines: 33