[Servercert-wg] Voting Period Begins: Ballot SC-076v2 "Clarify andImprove OCSP Requirements"

[Marco Schambach]

IdenTrust votes “Yes” on Ballot SC-076v2

 

Marco S.

TrustID Program Manager 

 

From: Servercert-wg <servercert-wg-bounces at cabforum.org> On Behalf Of Aaron Gable via Servercert-wg
Sent: Thursday, September 26, 2024 3:01 PM
To: CA/B Forum Server Certificate WG Public Discussion List <servercert-wg at cabforum.org>
Subject: [External][Servercert-wg] Voting Period Begins: Ballot SC-076v2 "Clarify andImprove OCSP Requirements"

 

Purpose of Ballot

 

This is v2 of this ballot; you can see the discussion thread for v1 here: https://lists.cabforum.org/pipermail/servercert-wg/2024-August/004798.html

 

This ballot attempts to address three concerns:
- The confusion around "reserved" serials, which do not actually exist because all Precertificate serials are assumed to also exist in corresponding Certificates and are therefore actually "assigned";
- Confusion around whether, and how quickly, OCSP responders must begin providing authoritative responses for Certificates and Precertificates; and
- Confusion around whether and how the OCSP requirements apply to Certificates which do not contain an AIA OCSP URL, but for which the CA's OCSP responder is still willing to provide responses.

 

These concerns have been previously discussed in this Mozilla policy bug <https://github.com/mozilla/pkipolicy/issues/280> , this ServerCert WG bug <https://github.com/cabforum/servercert/issues/422> , and this Bugzilla incident <https://bugzilla.mozilla.org/show_bug.cgi?id=1905419> .

It addresses these concerns by:
- Stating that OCSP responses must be available within 15 minutes of signing a certificate containing an AIA OCSP URL;
- Removing the concept of a "reserved" serial entirely;
- Moving all OCSP requirements into Section 4.9.9, leaving Section 4.9.10 (which RFC 3647 says is meant to place requirements on relying parties, not on CAs) empty; and
- Organizing the requirements in Section 4.9.9 into three clusters:
  - Definitions of "validity interval", "assigned", and "unassigned";
  - Requirements on OCSP Responders, which apply only to responses from AIA OCSP URLs found in issued certs; and
  - Requirements on OCSP Responses, which apply to all responses regardless of whether the certificate in question has an AIA OCSP URL.

 

GitHub PR representing this ballot: https://github.com/cabforum/servercert/pull/535

Rendered view of the resulting text: https://github.com/cabforum/servercert/blob/a8a36690802250cdbe508a6c1f99f700a5357bd3/docs/BR.md#499-on-line-revocationstatus-checking-availability

 

Motion

 

The following motion has been proposed by Aaron Gable (Let's Encrypt / ISRG), and is endorsed by Ben Wilson (Mozilla) and Antonis Eleftheriadis (HARICA).

 

Motion Begins

 

Modify the "Baseline Requirements for the Issuance and Management of Publicly-Trusted TLS Server Certificates", based on Version 2.0.6, as specified in the following redline:

 

https://github.com/cabforum/servercert/compare/929d9b4a1ed1f13f92f6af672ad6f6a2153b8230...a8a36690802250cdbe508a6c1f99f700a5357bd3

 

Motion Ends

 

This ballot proposes a Final Maintenance Guideline. The procedure for approval of this ballot is as follows:

 

Discussion Period (at least 7 days)

 

Start: August 29, 2024 19:00 UTC

End: September 26, 2024 19:00 UTC

 

Voting Period (7 days)

 

Start: September 26, 2024 19:00 UTC

End: October 3, 2024 19:00 UTC

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