From: daw@mozart.cs.berkeley.edu (David Wagner)
To: linux-kernel@vger.kernel.org
Subject: Re: posix capabilities inheritance
Date: Fri, 24 Oct 2003 20:58:54 +0000 (UTC) [thread overview]
Message-ID: <bnc3qe$kab$1@abraham.cs.berkeley.edu> (raw)
In-Reply-To: 3F9956E6.2020709@stanford.edu
Andy Lutomirski wrote:
>I've been programming Windows for a long time, and windows has a
>capability system. [...] All capabilities are disabled by default (almost --
>there's a pointless exception, of course). The result is that every
>program that uses a privileged function (e.g. change the time, restart,
>etc.) wraps that call with something that turns enables the capability
>at first, then disables it. This has no benefit -- a hijacked
>privileged program can still enable them, and the admin never sees this,
>because everything enables them.
Actually, it does have some benefits. If I do an open() somewhere
else in the code, I know that it is not going to unintentionally use
my elevated privileges. That's useful. Least privilege, and all that.
next prev parent reply other threads:[~2003-10-24 21:01 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <fa.n4rmmgg.2423pm@ifi.uio.no>
[not found] ` <fa.l1oevhb.1s5k583@ifi.uio.no>
2003-10-24 8:44 ` posix capabilities inheritance Andy Lutomirski
2003-10-24 12:41 ` Theodore Ts'o
2003-10-24 16:44 ` Andy Lutomirski
2003-10-24 20:58 ` David Wagner [this message]
[not found] <fa.f26d55g.1qgijbi@ifi.uio.no>
[not found] ` <fa.hq0dft9.9i0obd@ifi.uio.no>
2003-10-24 21:24 ` Andy Lutomirski
[not found] <fa.f4bs2b4.fhub0m@ifi.uio.no>
2003-10-23 22:05 ` Michael Glasgow
2003-10-23 22:59 ` Theodore Ts'o
2003-10-24 1:36 ` Ernie Petrides
2003-10-24 2:19 ` Bernd Eckenfels
2003-10-24 5:10 ` Ernie Petrides
2003-10-25 19:51 ` Pavel Machek
2003-10-23 1:41 Albert Cahalan
[not found] <fa.f9mv0tb.27sf3j@ifi.uio.no>
2003-10-23 1:36 ` Michael Glasgow
2003-10-23 1:57 ` Andy Lutomirski
[not found] <fa.f36f4t9.1rg8j3v@ifi.uio.no>
2003-10-22 7:11 ` Michael Glasgow
2003-10-22 19:40 ` Andy Lutomirski
[not found] <fa.hehull9.10mmngt@ifi.uio.no>
2003-10-21 18:24 ` Andy Lutomirski
-- strict thread matches above, loose matches on Subject: below --
2003-10-21 11:26 Michael Glasgow
2003-10-23 16:46 ` Theodore Ts'o
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