Include samba and libpam-smbpass by default in Ubuntu

[pabloalmeidaff9 at gmail.com]

We really don't have a way to have the packages installed but the service
stopped/unavailable until the user needs it?


2014/1/5 Steve Langasek <steve.langasek at ubuntu.com>

> On Sun, Jan 05, 2014 at 12:47:47PM -0500, Stéphane Graber wrote:
> > Ubuntu has a no open port by default policy at least for the Desktop
> > installation. If you look at a default Ubuntu Desktop system the only
> > exceptions you should see to that rule are the DHCP client (which needs
> > to listen on udp/68) and avahi-daemon (which needs to listen on
> > udp/5353).
>
> > So having samba installed and running by default isn't an option and
> > would be a potential security risk for millions of systems which do not
> > need the service at all anyway.
>
> > I think having nautilus prompt the user for those packages to be
> > installed is perfectly reasonable, having to restart the session however
> > seems a bit odd to me and shouldn't be a requirement.
>
> The requirement follows from the fact that CIFS shares require a different
> password hash to be available on the server system for authentication than
> the one used by default in /etc/shadow, and while the permissions on the
> file managed by libpam-smbpasswd are secure, the NTLM hashes are strictly
> weaker than the hashes used for /etc/shadow, which exposes users to greater
> risk of password cracking if the database is stolen.  So since these hashes
> are not generated until the user opts in to CIFS sharing through nautilus
> (changing their PAM config), the session logout/login is unavoidable.
>
> --
> Steve Langasek                   Give me a lever long enough and a Free OS
> Debian Developer                   to set it on, and I can move the world.
> Ubuntu Developer                                    http://www.debian.org/
> slangasek at ubuntu.com                                     vorlon at debian.org
>



-- 
Pablo Almeida
http://www.google.com/profiles/pabloalmeidaff9
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