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From: "Ludovic Courtès" <ludo@gnu.org>
To: Alex Vong <alexvong1995@gmail.com>
Cc: guix-devel@gnu.org
Subject: Re: We should disable dmesg for unprivileged users by default
Date: Sun, 14 Jul 2019 16:43:19 +0200	[thread overview]
Message-ID: <87y3101xtk.fsf@gnu.org> (raw)
In-Reply-To: <86h87qpv0u.fsf@gmail.com> (Alex Vong's message of "Sat, 13 Jul 2019 09:45:21 +0800")

Hi,

Alex Vong <alexvong1995@gmail.com> skribis:

> I think we should set /proc/sys/kernel/dmesg_restrict to 1 by default to
> prevent unprivileged users from reading the kernel ring buffer (since it
> could expose sensitive information about the system).

We could have a ‘dmesg-restrict’ service that would write to that file
as part of system activation, and we’d add it to ‘%base-packages’.
WDYT?

That way, people could easily remove it from ‘%base-packages’ if they
don’t want it.  (I might do that on my laptop for instance.  :-))

Thanks,
Ludo’.

  parent reply	other threads:[~2019-07-14 14:43 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-13  1:45 We should disable dmesg for unprivileged users by default Alex Vong
2019-07-13  5:20 ` Pierre Neidhardt
2019-07-14 14:43 ` Ludovic Courtès [this message]
2019-07-15 12:48   ` Ricardo Wurmus
2019-07-16 22:58     ` Alex Vong
2019-07-17  7:04 ` Tobias Geerinckx-Rice
2019-07-17  7:26   ` [PATCH] gnu: linux-libre: Restrict ‘dmesg’ to privileged users Tobias Geerinckx-Rice
2019-07-26 22:41     ` [bug#36701] " Ludovic Courtès
2019-07-26 23:19       ` bug#36701: " Tobias Geerinckx-Rice via Guix-patches

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