Date: Tue, 31 Mar 2015 11:34:21 +0200 From: Willem Jan Withagen <wjw@digiware.nl> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: freebsd-security@freebsd.org Subject: Re: ftpd don't record login in utmpx Message-ID: <551A6A1D.5030307@digiware.nl> In-Reply-To: <20150331084426.GX23643@zxy.spb.ru> 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>
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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.
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.
Or write a script that actually unites the output from either the
database and/or last(8).
--WjW
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