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Date:      Sun, 14 Oct 2018 05:56:00 +0000
From:      bugzilla-noreply@freebsd.org
To:        jail@FreeBSD.org
Subject:   [Bug 211580] deny system message buffer access from jails
Message-ID:  <bug-211580-29815-tzsBYihHXG@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-211580-29815@https.bugs.freebsd.org/bugzilla/>
References:  <bug-211580-29815@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D211580

Jamie Gritton <jamie@FreeBSD.org> changed:

           What    |Removed                     |Added
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 Attachment #173424|0                           |1
        is obsolete|                            |

--- Comment #16 from Jamie Gritton <jamie@FreeBSD.org> ---
Created attachment 198114
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D198114&action=
=3Dedit
Current revision of allow.read_msgbuf patch

I've updated Bjoern's patch for recent changes to allow.* handling, and gav=
e it
a mention in jail(8).

As I mentioned, I'm still concerned about this permission bit beingoff by
default.  I think I might have misinterpreted Joe's focus (he may have been
referring to security.bsd.unprivileged_read_msgbufandnot allow.read_msgbuf),
but my comment remains: do we want to change the default behavior, or just
allow it to be changed for those who care?

A point in favor of changing the default is this is something of a security
issue, so a reasonable default is to tend toward the more secure - plus, th=
at's
more  of a reason to include it in 12.  Hmm ... yeah, I can see either side=
.=20
So which wins?

--=20
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