Date: Sat, 13 Jan 2001 15:45:02 -0800 From: Kris Kennaway <kris@FreeBSD.ORG> To: James Wyatt <jwyatt@rwsystems.net> Cc: Ryan Thompson <ryan@sasknow.com>, freebsd-security@FreeBSD.ORG Subject: Re: Majordomo lists security Message-ID: <20010113154502.C2379@citusc.usc.edu> In-Reply-To: <Pine.BSF.4.10.10101131002390.98425-100000@bsdie.rwsystems.net>; from jwyatt@rwsystems.net on Sat, Jan 13, 2001 at 10:17:37AM -0600 References: <20010112222249.A28910@citusc.usc.edu> <Pine.BSF.4.10.10101131002390.98425-100000@bsdie.rwsystems.net>
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On Sat, Jan 13, 2001 at 10:17:37AM -0600, James Wyatt wrote:
> On Fri, 12 Jan 2001, Kris Kennaway wrote:
> > On Sat, Jan 13, 2001 at 12:05:10AM -0600, Ryan Thompson wrote:
> > > Hmm... Maybe this has been answered before.
> > >
> > > Is there a GOOD reason that, by default, /usr/local/majordomo/lists is
> > > world readable? Does not just the "majordom" user/group ever read the
> > > files contained therein? Until now, I've never really had cause to play
> [ ... ]
> > From the makefile:
> >
> > .if !defined(BATCH) && !defined(PACKAGE_BUILDING)
> > /usr/bin/dialog --yesno "Majordomo is unsafe to use on multi-user machines: local users can run
> > arbitrary commands as the majordomo user. Do you wish to accept the security risk and build majordomo
> > anyway?" 8 60 || ${FALSE}
> > .endif
>
> This says *nothing* about allowing (very portable) passwords to leak, just
> that they can run commands. Most users would take that to mean run such
> commands *locally*, not remotely. - Jy@
The ability to run commands as the user is a superset of the ability
to read a file, since the majordomo user can read its own files :-)
Both of these abilities require the user to be on the local machine,
hence the first part of the warning also covers it.
Kris
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