On Monday, May 16, 2016 at 3:31:56 PM UTC-7, Rob Stradling wrote:
> 
> One oddity: Some intermediates (e.g. https://crt.sh/?id=17014784) 
> contain the EKU extension with the MS SGC and/or NS Step-Up OIDs and 
> _not_ id-kp-serverAuthentication.  The policy says that these don't need 
> to be disclosed, but Firefox does trust them as issuers of server 
> authentication certs.
> 

Good point.

https://bugzilla.mozilla.org/show_bug.cgi?id=982932
"Check issuance date of intermediate certificate in effort to obsolete SGC EKU"
Target Milestone: mozilla49 

So, old intermediate certs like that should not be marked technically 
constrained. New intermediate certs that have the SGC EKU and not 
id-kp-serverAuthentication will not validate in Firefox 49 or later, so those 
may be treated as technically constrained.

Thanks,
Kathleen
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