Re: shim-signed

2022-04-28 Thread Steve McIntyre
Tollef Fog Heen wrote: >]] Hanno 'Rince' Wagner >> >> I am a very firm believer of giving people as much information as >> possible while being responsible. Meaning, that I would love to have >> that documentation - including a big warning sign which sais "if you >> follow this path, you may bric

Re: shim-signed

2022-04-28 Thread Steve McIntyre
The Wanderer wrote: >On 2022-04-26 at 10:14, Marc Haber wrote: > >> On Sat, 23 Apr 2022 18:21:47 +0100, Steve McIntyre >> wrote: > >>> Alternatively, people can build replacement shim-signed packages >>> using their own root of trust if desired. If we had a large enough >>> number of users wanting

Re: shim-signed

2022-04-28 Thread Steve McIntyre
The Wanderer wrote: >On 2022-04-26 at 18:05, Paul Wise wrote: > >> On Tue, 2022-04-26 at 20:41 +0200, Bastian Blank wrote: >> >>> secure boot signing process at Microsoft is a review-sign process >> >> What kind of review are Microsoft doing of the Debian shim? >> >> Are they reviewing the sourc

Re: shim-signed

2022-04-27 Thread Tollef Fog Heen
]] The Wanderer > I can't speak to how big of an advantage A is, but B seems to me to be > pretty important. It's a manual process that includes poking around in MS' partner portal, USB HSMs stored in a safe place and rebooting to Windows, then checking back days (and sometimes weeks) later to d

Re: shim-signed

2022-04-27 Thread Tollef Fog Heen
]] Hanno 'Rince' Wagner > Hi everbody, > > On Sun, 24 Apr 2022, Tollef Fog Heen wrote: > > > I don't think we have docs for running with a different root of trust > > than MS'. To be honest, I'm not sure we even _should_ have a lot of docs > > around it, since the general brittleness of the boo

Re: shim-signed

2022-04-26 Thread The Wanderer
On 2022-04-26 at 18:05, Paul Wise wrote: > On Tue, 2022-04-26 at 20:41 +0200, Bastian Blank wrote: > >> secure boot signing process at Microsoft is a review-sign process > > What kind of review are Microsoft doing of the Debian shim? > > Are they reviewing the source and checking for a reproduc

Re: shim-signed

2022-04-26 Thread The Wanderer
On 2022-04-26 at 10:14, Marc Haber wrote: > On Sat, 23 Apr 2022 18:21:47 +0100, Steve McIntyre > wrote: >> Alternatively, people can build replacement shim-signed packages >> using their own root of trust if desired. If we had a large enough >> number of users wanting a different root of trust,

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Paul Wise
On Tue, 2022-04-26 at 20:41 +0200, Bastian Blank wrote: > secure boot signing process at Microsoft is a review-sign process What kind of review are Microsoft doing of the Debian shim? Are they reviewing the source and checking for a reproducible build? -- bye, pabs https://wiki.debian.org/Pau

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Bastian Blank
Moin On Tue, Apr 26, 2022 at 04:14:02PM +0200, Marc Haber wrote: > On Sat, 23 Apr 2022 18:21:47 +0100, Steve McIntyre > wrote: > >We don't have good docs around this in general (hey, it's security > >software - it's against the law to write good and complete docs!), but > >I've certainly discusse

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Steve McIntyre
Marc Haber wrote: >On Sat, 23 Apr 2022 18:21:47 +0100, Steve McIntyre > >>Better than that, our shim-signed source package always double-checks >>things here. At build time it removes the Microsoft signature and >>compares that shim binary to the binary that we submitted for >>signing. We would sp

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Ansgar
On Tue, 2022-04-26 at 16:04 +0200, Marc Haber wrote: > On Sat, 23 Apr 2022 13:54:59 +0200, Ansgar wrote: > > Why? > > If only I knew. I myself don't feel to comfortable to rely on > Microsoft being able to pull the plug on us any time. I don't know > whether they can, but I imagine some kind of r

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Marc Haber
On Sat, 23 Apr 2022 18:21:47 +0100, Steve McIntyre wrote: >We don't have good docs around this in general (hey, it's security >software - it's against the law to write good and complete docs!), but >I've certainly discussed this with a few folks over the years. It would be great to have that writ

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-26 Thread Marc Haber
On Sat, 23 Apr 2022 13:54:59 +0200, Ansgar wrote: >On Sat, 2022-04-23 at 12:21 +0200, Marc Haber wrote: >> >Is the presence of shim-signed on the install media enough to make >> >people feel somehow contaminated? >> >> I think so, yes. Personally, I don't care too much but i can >> understand why

Re: shim-signed

2022-04-23 Thread Tollef Fog Heen
]] Marc Haber > Excuse me for asking a user question on -devel, but do we have any > docs where someone explains how much a security trade off is > shim-signed relativ to the optimum? I think that using shim-signed is > surely worse than a directly signed kernel, but I don't know whether I > can

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-23 Thread Paul Wise
On Sat, 2022-04-23 at 18:21 +0100, Steve McIntyre wrote: > If you don't like the fact that Microsoft's keys are involved, > it's possible on a lot of machines to enrol your own keys On machines where this isn't possible in the UEFI firmware interface, IIRC shim-signed is designed to allow you to

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-23 Thread Steve McIntyre
Marc Haber wrote: >On Fri, 22 Apr 2022 11:16:42 +0200, Philip Hands >wrote: >>I understand the urge to insist upon absolute DFSG purity in the media >>we produce, but when it comes to wanting to avoid every last shred of >>data that we could not regenerate ourselves, I think we crossed that >>line

Re: shim-signed (was: Firmware - what are we going to do about it?)

2022-04-23 Thread Ansgar
On Sat, 2022-04-23 at 12:21 +0200, Marc Haber wrote: > >Is the presence of shim-signed on the install media enough to make > >people feel somehow contaminated? > > I think so, yes. Personally, I don't care too much but i can > understand why some people might. Why? Because it contains a third-part