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Bug#992692: general: Use https for {deb,security}.debian.org by default



On Thu, 2021-09-02 at 21:26 +0200, Simon Richter wrote:
> As it is now, I can install a Debian system where no X.509
> certificate authorities are trusted.

That doesn't change with the proposal?

>   - If I deselect all CAs in the configuration dialog of the 
> ca-certificates package, what mechanism will allow apt to work?

If people intentionally detrust them, they have to deal with the
fallout. People can also detrust Debian's OpenPGP signing keys; it's
not much different.

Accessing www.debian.org will also not work on such systems (and unlike
deb.d.o that does not even offer non-https). It's not Debian's problem.

>   - Do we want to pin the certificate provider for Debian mirrors, in
> the knowledge that we want to be bound to this provider for several 
> years, do we want any "root" CA to be able to provide a trust anchor?

Probably not?

>   - Is there a revocation mechanism by which we can mark "root" CAs
> as 
> untrustworthy?

If we don't have one, shouldn't we worry more about that given the
widespread use of TLS?

Do we have a revocation mechanism by which we can mark OpenPGP signing
keys as untrustworthy (say for apt)?

>   - What does the UI look like if OSCP verification fails?
>   - How do mirror operators get a signed certificate?

Not all mirror operators have a TLS certificate. I don't think that was
proposed to be changed (see subject of the mail).

> I think we're adding a lot of complexity and external dependencies to
> the system here, which adds a lot of burden to mirror operators that 
> aren't large CDNs.

See above.

>   - do we have a contingency plan if deb.debian.org hosting on Fastly
> is no longer feasible?

Is replacing deb.d.o by a non-CDN feasible? If no, what does use of
https change?

As far as I know there is also at least https://cdn-aws.deb.debian.org/
if you don't like Fastly.

Ansgar


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