Jean-Marc Desperrier wrote:
> Michael Ströder wrote:
>> [...]
>> RFC 2818 (only INFORMATIONAL) references RFC 2459 concerning matching
>> rules which was obsoleted by RFC 3280 which was recently obsoleted by
>> RFC 5280. RFC 5280 references "Preferred name syntax" in RFC 1034.
>>
>> Glancing over these documents I found no provision that the dNSName in
>> subjectAltName MUST specify a fully-qualified domain name. But maybe
>> this issue should raised on the ietf-pkix mailing list.
> 
> There's no reason to forbid at that level issuance of certificates that 
> are intended to be used only on an intranet.

Well, if there are doubts whether https://de/ points to a A/CNAME record 
in the .de top-level domain or resolves to a local server (by DNS adding 
search suffix) and is therefore treated as equivalent to 
https://de.example.test/ then the TLS standard should say something 
about this. Also matching rules for dNSName are affected.

> It should be more the policy of the CA that should either refuse to 
> issue such certificates, or require a written agreement that they are 
> intended only for intranet use.

Nelson was asking for adding an additional provision to Mozilla's policy.

Ciao, Michael.
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