Date: Fri, 22 Mar 2002 12:48:51 -0800 From: "DiCioccio, Jason" <jdicioccio@epylon.com> To: 'Anthony Schneider' <aschneid@mail.slc.edu>, Fernan Aguero <fernan@iib.unsam.edu.ar> Cc: FreeBSD Security <freebsd-security@FreeBSD.ORG> Subject: RE: su -c user command not working Message-ID: <657B20E93E93D4118F9700D0B73CE3EA02FFF4C4@goofy.epylon.lan>
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Also you can try: su -m man -c catman
Cheers,
- -JD-
- -----Original Message-----
From: Anthony Schneider [mailto:aschneid@mail.slc.edu]
Sent: Friday, March 22, 2002 12:37 PM
To: Fernan Aguero
Cc: FreeBSD Security
Subject: Re: su -c user command not working
the -c flag passes a command to the shell of the user you are su'ing to,
so since user man's shell is /sbin/nologin, /sbin/nologin is (according
to su) supposed to interpret the command 'catman' and execute it,
however /sbin/nologin doesn't interpret commands, it just prints the
message "This account is currently unavailable" (just as it did for you)
and then exits. for 'su -c' to work, the user you are su'ing to needs
something to actually interpret the command. i suggest you either change
that user's passwd info to have such a shell, or you to an account that
has such a shell.
as for xterm reading your .cshrc, you need to pass it the option -ls,
which tells it to launch a login shell.
- -Anthony.
On Fri, Mar 22, 2002 at 04:58:17PM -0300, Fernan Aguero wrote:
> I wonder if this is security related.
>
> Basically I'd like to know if this has been disabled for security
> reasons.
>
> According to su(1) you can do something like:
> su man -c catman
> Runs the command catman as user man. You will be asked for man's
> password unless your real UID is 0.
>
> However, I am refused to run the example in this way (I am root, of
> course).
>
> root> su man -c catman
> This account is currently not available.
>
> man is listed in /etc/passwd with /sbin/nologin as shell
>
> I'd also like to know why my ~/.cshrc is not read when I log in or
> open an xterm. I have to source it every time. Is this also related to
> the previous issue (disabled for some reason?)
>
> I am running FreeBSD-4.3 (RELENG_4_3), and except for some minor
> things haven't done major configuration or editing of system base
> defaults.
>
> Thanks in advance for any help or pointers,
>
> Fernan
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-security" in the body of the message
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