*BSD News Article 58932


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Q: File permissions changed in 2.1?
Date: 7 Jan 1996 11:05:49 GMT
Organization: Private BSD site, Dresden
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References: <4cn5q3$7vd@pilhuhn.pilhuhn.de>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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pmh@pilhuhn.de (Patrick M.Hausen) writes:

> After installing 2.1 I found that cu, for example, is world executable and
> setuid uucp. The same with uucico. I don't think this is a good idea, since
> now any user can dial out. If I remember correctly, in 2.0.5 only users in
> group dialer could invoke cu or uucico. I don't remember, if this was via
> the /dev/cua* or /usr/bin/cu's permissions, though. (and I don't have my
> cdrom handy)

It's done via group permissions of /dev/cua*.  Make the cua's 0660,
and cu will only allow you accessing the device if your are root or a
member of group dialer.

cu and uucico must be setuid uucp in order to read the configuration
files under /etc/uucp (some of them are owned by uucp and perm 0600).

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)