From: "Daniel Cegiełka" <daniel.cegielka@gmail.com>
To: musl@lists.openwall.com
Subject: Re: shadow.h
Date: Wed, 27 Feb 2013 18:04:08 +0100 [thread overview]
Message-ID: <CAPLrYETDT6OMv5X8UjbhBJM8TeaN-yd2G5hZ+ugGDxQLR_Wftg@mail.gmail.com> (raw)
In-Reply-To: <20130227165408.GJ20323@brightrain.aerifal.cx>
2013/2/27 Rich Felker <dalias@aerifal.cx>:
>>
>> I prefer tcb, but the current implementation in musl isn't as
>> functional as owl's (privilege separation):
>
> Can you explain this better?
Owl's tcb uses SGID instead SUID, so SUID is not needed for programs
like passwd. Here is a good presentation:
http://www.openwall.com/presentations/Owl/mgp00020.html
> I don't think the code in libc has
> anything to do with privilege separation model used. It only *reads*
> the tcb shadow data; it doesn't write anything, and it doesn't depend
> on any particular permissions model for the data except that it be
> readable by whichever user is doing authenticating.
>
> Rich
next prev parent reply other threads:[~2013-02-27 17:04 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-26 22:54 shadow.h Daniel Cegiełka
2013-02-26 23:19 ` shadow.h Szabolcs Nagy
2013-02-27 8:24 ` shadow.h Daniel Cegiełka
2013-02-27 16:52 ` shadow.h Rich Felker
2013-02-27 17:18 ` shadow.h Daniel Cegiełka
2013-02-26 23:35 ` shadow.h Rich Felker
2013-02-27 9:09 ` shadow.h Daniel Cegiełka
2013-02-27 16:54 ` shadow.h Rich Felker
2013-02-27 17:04 ` Daniel Cegiełka [this message]
2013-02-27 17:06 ` shadow.h Rich Felker
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