Date: Tue, 31 Mar 2015 12:49:15 +0300 From: Slawa Olhovchenkov <slw@zxy.spb.ru> To: Willem Jan Withagen <wjw@digiware.nl> Cc: freebsd-security@freebsd.org Subject: Re: ftpd don't record login in utmpx Message-ID: <20150331094915.GY23643@zxy.spb.ru> In-Reply-To: <551A6A1D.5030307@digiware.nl> References: <20150330142543.GD74532@zxy.spb.ru> <44y4me9gfi.fsf@lowell-desk.lan> <20150331034402.GE74532@zxy.spb.ru> <551A561C.5000904@digiware.nl> <20150331084426.GX23643@zxy.spb.ru> <551A6A1D.5030307@digiware.nl>
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On Tue, Mar 31, 2015 at 11:34:21AM +0200, Willem Jan Withagen wrote:
> On 31-3-2015 10:44, Slawa Olhovchenkov wrote:
> > On Tue, Mar 31, 2015 at 10:09:00AM +0200, Willem Jan Withagen wrote:
> >
> >> On 31-3-2015 05:44, Slawa Olhovchenkov wrote:
> >>> On Mon, Mar 30, 2015 at 08:08:49PM -0400, Lowell Gilbert wrote:
> >>>
> >>>> Slawa Olhovchenkov <slw@zxy.spb.ru> writes:
> >>>>
> >>>>> ftpd from FreeBSD-10 and up don't record ftp logins to utmpx database
> >>>>> (for case of chrooted login).
> >>>>> This is lack security information.
> >>>>> I found this is done by r202209 and r202604.
> >>>>> I can't understand reason of this.
> >>>>> Can somebody explain?
> >>>>
> >>>> Having a jail log into the base system is a security issue in the
> >>>> making. Can't you do this in a safer way by doing remote logging to the
> >>>> base system rather than having the jail hold on to a file handle that
> >>>> belongs outside the jail?
> >>>
> >>> Jail? Why I you talk about jail?
> >>>
> >>>> It's certainly possible to maintain these kinds of capabilities, but
> >>>> you would have to convince code reviewers that the same results can't be
> >>>> achieved some other way that's easier to secure.
> >>
> >> I might have just too many miles on the clock already....
> >>
> >> It used to liek this: to be able to do anything usefull in a chroot,
> >> you'd rebuild those parts of the system tree that you need in under the
> >> chrootdir.
> >> Eg. including ls(1) and all the libs it needed to function in ftpd.
> >> Some for apaches that ran chrooted, you'd carry/duplicate all you needed
> >> into the chroot env
> >>
> >> So in this case you probably need
> >> ${CHROOTDIR/var/log
> >> and create the database there.
> >
> > I have many ftp acconts, than need be isolated by ftp.
> > I need united database about login and logout.
> > FreeBSD 1.x-9.x do this.
> > Why this removed in 10.x?
>
> Slawa,
>
> I can't tell you that, but it is in r202209. And you can ask the one
> that removed it (ed@). :)
> Like r202209 says 5 years ago:
> Maybe we can address this in the future if it turns out to be a
> real issue.
What about issue talk?
Opened file outside chroot? /dev/null and /var/run/logpriv still opened.
Disabling logging for chrooted accounts? Realy?!
> Hasn't been an issue uptill now, it seems.
>
> But then there are many flavours of FTP server out there ATM, so freely
> quoted from Andy Tannenbaum:
> If you don't like this version, get another one.
Now I only see removing old and working functionality w/o reassonable
> Or write a script that actually unites the output from either the
> database and/or last(8).
You kidding.
For this I need rearange ALL ftp acconts. Change permissions. Create
hieararhie. Learn users.
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