[chrony-users] Re: Perms on refclock socket

[infection.many550@xxxxxxxxxxx]

On Mon, Mar 18, 2024 at 09:15:57AM +0100, Miroslav Lichvar wrote:

> Normally you wouldn't want non-root users to be able to send chronyd
> bogus refclock data in order to modify the system clock.

If an attacker can assume the identity of this account, I have *much*
bigger problems than that.

> If you really want to change the permissions or ownership of the
> socket, you can do it in the chronyd systemd service file like this

> ExecStartPost=/usr/bin/chown user:root /var/run/chrony.refclock.sock

Thanks. I'll probably use a dedicated group instead, but the idea is
perfect.

-- 
Ian

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