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From: Moritz Warning <m.warning@meteocontrol.de>
To: Sascha Hauer <s.hauer@pengutronix.de>
Cc: "barebox@lists.infradead.org" <barebox@lists.infradead.org>
Subject: Re: Secure barebox
Date: Mon, 1 Jun 2015 14:12:00 +0200	[thread overview]
Message-ID: <556C4C10.3010400@meteocontrol.de> (raw)
In-Reply-To: <20150601120652.GH6325@pengutronix.de>

Thanks for the information!

On 06/01/2015 02:06 PM, Sascha Hauer wrote:
> Hi Moritz,
>
> On Mon, Jun 01, 2015 at 11:34:23AM +0200, Moritz Warning wrote:
>> Hi,
>>
>> I like to secure access to barebox using a password.
>> passwd seems to be the right command, but setting a
>> password does not seem to have any effect.
>>
>> After a reset, access to barebox is not limited as far
>> as I can tell.
>
> I've never really used password support. I just gave it a try and I can
> only say: It's not usable in its current state. The thing you were
> missing is: You must set nv.login.timeout to something nonzero:
>
> nv.login.timeout=3; saveenv
>
> Then afterwards I get asked for a password. If I enter this correctly I
> get to the prompt, if I enter the wrong password I'm asked for a
> password again. However, when I press ctrl-c or just an empty password I
> also get to the prompt.
> The password protection support is currently implemented in the
> /env/bin/init script. This makes the whole stuff very fragile. The
> barebox shell is not designed to be secure. Once the shell is started
> the system is insecure, so the password asking process should be done
> before entering the shell, not from the shell.
>
> Sascha
>

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  reply	other threads:[~2015-06-01 12:12 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-06-01  9:34 Moritz Warning
2015-06-01 12:06 ` Sascha Hauer
2015-06-01 12:12   ` Moritz Warning [this message]
2015-06-01 12:29     ` Moritz Warning
2015-06-03  8:24       ` Sascha Hauer
2015-06-08  8:25         ` Moritz Warning

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