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Date:      Sat, 4 Mar 2006 18:01:34 +0200
From:      Giorgos Keramidas <keramida@ceid.upatras.gr>
To:        Kovesdan Gabor <gabor.kovesdan@t-hosting.hu>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Where am I? :)
Message-ID:  <20060304160134.GA34673@flame.pc>
In-Reply-To: <4409B8A0.40501@t-hosting.hu>
References:  <4408D4D3.4030102@t-hosting.hu> <20060304000640.GA26726@flame.pc> <44094903.8080006@t-hosting.hu> <20060304145809.GA33965@flame.pc> <4409B8A0.40501@t-hosting.hu>

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On 2006-03-04 16:56, Kovesdan Gabor <gabor.kovesdan@t-hosting.hu> wrote:
>Giorgos Keramidas wrote:
>> What is your method?  I haven't seen any description of how
>> *you* ended up not being logged in.  Are you using screen(1)
>> or another program that tweaks /var/log/wtmp?  Which program?
>> Have you found out why your login seems record in wtmp was
>> marked as logged out?
>
> Here's my method:
>
> http://www.freebsd.org/cgi/query-pr.cgi?pr=94060

Ah, I see now.  Thanks :)

>> What a bug about this would report is that set-user-id
>> programs, like screen(1), can do all sorts of nasty things if
>> abused.  This isn't exactly a bug, but common knowledge.
>
> /bin/login is suid, too. Can't screen and login be modified
> somehow to take care of this issue?

login is part of the base system so it should be fixed, if
possible.  `screen' is a thirdparty program and the feature *is*
deliberate, but I think it can be disabled by running screen as
non-suid root.




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