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Message-ID: <050e01c3814f$bd8511c0$ac3e4381@chrismob>
From: "Chris Rodgers" <cygwin AT bulk DOT rodgers DOT org DOT uk>
To: <cygwin AT cygwin DOT com>
References: <5 DOT 1 DOT 0 DOT 14 DOT 0 DOT 20030915104435 DOT 027cf828 AT 127 DOT 0 DOT 0 DOT 1> <04ce01c37ba7$5b1e67a0$a500000a AT chrismob> <20030915171438 DOT GK9981 AT cygbert DOT vinschen DOT de>
Subject: Re: ntsec: changing the everyone user
Date: Mon, 22 Sep 2003 22:23:16 +0100
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> On Mon, Sep 15, 2003 at 05:35:20PM +0100, Chris Rodgers wrote:
> > OK. Here is an example of the way permissions leak out to "Everyone". I
> > create a new file, with no permissions granted to "other". Cygwin shows
this
> > to have worked OK. Yet in actual fact there is an ACL there giving
Everyone
> > some access rights. I usually choose not to have "Everyone" authorised
to do
> > anything on my Windows NT/2000 boxes, using Authorised Users instead.
This
> > way, without a valid login, you cannot get any information, including
> > usernames and ACLs.
> >
> > How can I stop cygwin setting these ACLs?
>
> Did you have a close look to the access rights granted to everyone?
> Otherwise, just don't use ntsec.
>
> Corinna
>
> > [...]
> >                 Everyone:(special access:)
> >                          READ_CONTROL
> >                          FILE_READ_EA
> >                          FILE_READ_ATTRIBUTES
>

For the archives (NOT for release :-)), I think that a quick hack is to
redefine well_known_world_sid in src/winsup/cygwin/sec_helper.cc to be
"S-1-5-11" instead of "S-1-1-0". This refers to the "Authorized Users"
well-known group, instead of to "Everyone".

Chris.


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