[Servercert-wg] Discussion begins for Ballot SC45: Wildcard Domain Validation

Ryan Sleevi sleevi at google.com
Thu May 20 18:51:46 UTC 2021

This email begins the discussion period for Ballot SC45: Wildcard Domain

Purpose of Ballot:

This Ballot addresses security issues with the use of methods,, and of the Baseline Requirements to authenticate an
entire domain namespace. These methods rely on an HTTP based demonstration
of control, which only demonstrates control over a particular host and
service, rather than the entire Domain Namespace.

Effective 2021-12-01, these methods MUST NOT be used to issue Wildcard
Certificates and MUST NOT be used as Authorization Domain Names for
subordinate FQDNs of the validated FQDN.

Although not directly modifying the same section, this Ballot does interact
with Ballot SC42: 398-day Re-use Period, and so two versions are presented,
based on whether or not SC42 finishes the IP review period without issues.
If SC42 is adopted, does not need to change, because no past
validations can be reused to issue new certificates after the effective
date. However, if SC42 were to fail, is also modified to keep
consistent with .18 and .19.

The following motion has been proposed by Ryan Sleevi of Google and
endorsed by Jos Purvis of Cisco and Dimitris Zacharopoulos of HARICA.

It can be viewed on GitHub as


This ballot modifies the “Baseline Requirements for the Issuance and
Management of Publicly-Trusted Certificates” (“Baseline Requirements”),
based on Version 1.7.4.

If SC42 finishes the IP Review period without issues and is adopted, MODIFY
the Baseline Requirements as specified in the following Redline:


If SC42 fails to finish the IP Review period without issues and is not
adopted, MODIFY the Baseline Requirements as specified in the following



This ballot proposes a Final Maintenance Guideline.

The procedure for approval of this ballot is as follows:

Discussion (7+ days)

Start Time: 2021-05-20 19:00:00 UTC
End Time: TBD

Vote for approval (7 days)

Start Time: TBD
End Time: TBD
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