[Python-Dev] Validating SSL By Default (aka Including a Cert Bundle in CPython)

Donald Stufft donald at stufft.io
Mon Jun 3 23:47:31 CEST 2013

On Jun 3, 2013, at 5:41 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:

> On Mon, 3 Jun 2013 22:31:40 +0100
> Paul Moore <p.f.moore at gmail.com> wrote:
>>> Some legit sites with proper
>>> certificates still manage to muck something up administratively
>>> (developer.quicksales.com.au has a cert from RapidSSL but doesn't
>>> bundle the intermediates, and I've told their devs about it, but all I
>>> can do is disable cert checking). This will break code in ways that
>>> will surprise people greatly. But I'd still rather the default be
>>> True.
>> I'm happy if the "will cease to work" clause only says "some sites with
>> broken security configurations may stop working" with a clear explanation
>> that it is *their* fault, not Python's. I'd also expect that the same sites
>> would fail in browsers - if not, we should also be able to make them work
>> (or face cries of "well, Internet Explorer/Firefox doesn't have a problem
>> with my site, why does Python?").
> Keep in mind that not every HTTPS service is a Web site that is meant
> to be readable with a browser. Some are Web services, possibly internal,
> possibly without a domain name (and, therefore, probably a non-matching
> certificate subject name).

They should need to explicitly opt in to disabling the checks that allow that to work.

> Regards
> Antoine.
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Donald Stufft
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