From: Ricardo Wurmus <rekado@elephly.net>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: guix-devel@gnu.org
Subject: Re: We should disable dmesg for unprivileged users by default
Date: Mon, 15 Jul 2019 14:48:58 +0200 [thread overview]
Message-ID: <87ims3ihtx.fsf@elephly.net> (raw)
In-Reply-To: <87y3101xtk.fsf@gnu.org>
Ludovic Courtès <ludo@gnu.org> writes:
> 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?
This sounds good!
--
Ricardo
next prev parent reply other threads:[~2019-07-15 12:49 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
2019-07-15 12:48 ` Ricardo Wurmus [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87ims3ihtx.fsf@elephly.net \
--to=rekado@elephly.net \
--cc=guix-devel@gnu.org \
--cc=ludo@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this external index
https://git.savannah.gnu.org/cgit/guix.git
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.