On 11/18/2014 05:44 PM, Reindl Harald wrote:
Am 18.11.2014 um 16:12 schrieb Michael Catanzaro:
> On Tue, 2014-11-18 at 12:11 +0100, Florian Weimer wrote:
>> Firefox also builds a repository of intermediate certificates over
>> and uses them automatically to fill gaps in certificate chains for
>> completely unrelated sites. This leads to somewhat non-predictable
>> behavior regarding the set of sites to which Firefox can connect
>> reliably. This is difficult to emulate in one-shot command line
>> such as wget which do not keep any local state by default.
> And that's arguably the biggest problem of all. The goal is to reduce
> certificate validation failures for users who have seen a particular
> intermediate cert before, but the effect is that web developers get
> false positives when testing whether their sites are set up properly or
> not. This just makes things worse in the long run.
true - *but* anybody responsible for a https site should at leat once
per month run https://www.ssllabs.com/ssltest/
receives an “A+” rating, even though it lacks an
intermediate certificate and connections from non-browser clients fail.
You have to read the results carefully to discover that the site is
misconfigured in a significant way.
Florian Weimer / Red Hat Product Security