From: Luca Barbieri <luca.barbieri@gmail.com>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>, Ingo Molnar <mingo@elte.hu>,
James Morris <jmorris@namei.org>,
linux-kernel@vger.kernel.org, Kyle McMartin <kyle@mcmartin.ca>,
Alexander Viro <viro@ftp.linux.org.uk>
Subject: Re: Upstream first policy
Date: Tue, 9 Mar 2010 03:09:11 +0100 [thread overview]
Message-ID: <ff13bc9a1003081809x7a4b5828wdcb0a56594a1fb24@mail.gmail.com> (raw)
In-Reply-To: <20100309015518.GS30031@ZenIV.linux.org.uk>
> <sarcasm>
> Yeah, especially when it's read by sshd. Who cares, indeed? So it's got
> a passwordless root, that's even better, right? Nobody will see your
> real root password that way...
> </sarcasm>
Not sure what you mean exactly.
You won't have a passwordless root if you don't allow anyone to modify
the file at /etc/shadow, or change that dentry by deleting a file
there or putting an arbitrary file there (with creat, rename or link).
This is conceptually a path-based security check.
It is also separate from the problem of not giving anyone knowledge of
the root password or hash of it, which a conceptually content-based
security check on reads.
next prev parent reply other threads:[~2010-03-09 2:09 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-07 21:23 Upstream first policy James Morris
2010-03-07 21:31 ` Linus Torvalds
2010-03-07 21:36 ` Linus Torvalds
2010-03-08 9:46 ` Ingo Molnar
2010-03-08 17:30 ` Alan Cox
2010-03-08 18:08 ` Linus Torvalds
2010-03-08 18:45 ` Al Viro
2010-03-08 18:53 ` Al Viro
2010-03-08 18:59 ` Linus Torvalds
2010-03-08 19:15 ` Linus Torvalds
2010-03-08 19:17 ` Alan Cox
2010-03-08 19:32 ` Linus Torvalds
2010-03-09 0:48 ` Kyle McMartin
2010-03-08 21:20 ` Chris Adams
2010-03-08 19:18 ` Al Viro
2010-03-09 1:18 ` Luca Barbieri
2010-03-09 1:25 ` Al Viro
2010-03-09 1:51 ` Luca Barbieri
2010-03-09 1:55 ` Al Viro
2010-03-09 2:09 ` Luca Barbieri [this message]
2010-03-08 19:08 ` Alan Cox
2010-03-08 19:18 ` Linus Torvalds
2010-03-08 19:27 ` Alan Cox
2010-03-08 19:34 ` Linus Torvalds
2010-03-09 7:29 ` Ingo Molnar
2010-03-09 8:46 ` Dave Airlie
2010-03-09 14:58 ` Ulrich Drepper
2010-03-08 23:02 ` Eric W. Biederman
2010-03-08 23:18 ` Eric Paris
2010-03-09 15:16 ` Florian Mickler
2010-03-09 22:49 ` Alan Cox
2010-03-11 3:52 ` Eric W. Biederman
2010-03-08 22:12 ` Ulrich Drepper
2010-03-08 23:12 ` Eric Paris
2010-03-08 23:21 ` Linus Torvalds
2010-03-08 23:18 ` Rik van Riel
2010-03-08 23:37 ` Linus Torvalds
2010-03-08 23:51 ` Rik van Riel
2010-03-09 0:10 ` Linus Torvalds
2010-03-09 3:26 ` Casey Schaufler
2010-03-09 3:58 ` Linus Torvalds
2010-03-09 13:09 ` Samir Bellabes
2010-03-09 0:15 ` Al Viro
2010-03-09 0:48 ` Al Viro
2010-03-09 1:49 ` Linus Torvalds
2010-03-09 2:05 ` Al Viro
2010-03-09 2:18 ` Linus Torvalds
2010-03-23 13:59 ` Pavel Machek
[not found] <elwcV-406-1@gated-at.bofh.it>
[not found] ` <elHL4-42q-5@gated-at.bofh.it>
[not found] ` <elP5U-6Ku-29@gated-at.bofh.it>
[not found] ` <elPyV-7zE-7@gated-at.bofh.it>
[not found] ` <elQbE-8ll-7@gated-at.bofh.it>
[not found] ` <elQv0-vu-13@gated-at.bofh.it>
[not found] ` <elQEG-Hn-33@gated-at.bofh.it>
2010-03-08 19:40 ` James Kosin
-- strict thread matches above, loose matches on Subject: below --
2010-03-04 18:39 [git pull] drm request 3 Jesse Barnes
2010-03-04 18:51 ` Linus Torvalds
2010-03-04 18:56 ` Jesse Barnes
2010-03-04 19:08 ` Linus Torvalds
2010-03-04 19:25 ` Dave Airlie
2010-03-04 20:01 ` Linus Torvalds
2010-03-04 22:06 ` Dave Airlie
2010-03-05 0:08 ` Linus Torvalds
2010-03-05 0:28 ` Ben Skeggs
2010-03-05 0:41 ` Linus Torvalds
2010-03-05 1:19 ` Upstream first policy Kyle McMartin
2010-03-05 1:28 ` Linus Torvalds
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