[Servercert-wg] Servercert-wg Digest, Vol 26, Issue 5

[Tamer ERGUN]

Kamu SM votes YES on ballot SC33

Regards,
Tamer ERGUN

-----Original Message-----
From: Servercert-wg <servercert-wg-bounces at cabforum.org> On Behalf Of
servercert-wg-request at cabforum.org
Sent: Saturday, August 8, 2020 9:00 PM
To: servercert-wg at cabforum.org
Subject: Servercert-wg Digest, Vol 26, Issue 5

Send Servercert-wg mailing list submissions to
	servercert-wg at cabforum.org

To subscribe or unsubscribe via the World Wide Web, visit
	https://lists.cabforum.org/mailman/listinfo/servercert-wg
or, via email, send a message with subject or body 'help' to
	servercert-wg-request at cabforum.org

You can reach the person managing the list at
	servercert-wg-owner at cabforum.org

When replying, please edit your Subject line so it is more specific than
"Re: Contents of Servercert-wg digest..."


Today's Topics:

   1. VOTING BEGINS: Ballot SC33: TLS Using ALPN Method (Wayne Thayer)


----------------------------------------------------------------------

Message: 1
Date: Fri, 7 Aug 2020 15:06:13 -0500
From: Wayne Thayer <wthayer at gmail.com>
To: "CA/B Forum Server Certificate WG Public Discussion List"
	<servercert-wg at cabforum.org>
Subject: [Servercert-wg] VOTING BEGINS: Ballot SC33: TLS Using ALPN
	Method
Message-ID:
	<CAPh8bk_wQ9T-d=-v-b1ieX-HSt9J7X7P8SzOxathtiB1knFiog at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

This begins the voting period for ballot SC33: TLS Using ALPN Method

Purpose of Ballot:

In January 2018, a vulnerability affecting the ACME TLS-SNI-01 method of
domain validation was disclosed [1]. That method is an implementation of BR
3.2.2.4.10, which is still permitted by the BRs despite the vulnerability.
Some Browsers have banned the use of method 10 unless mitigations for the
vulnerability have been put into place, and one approach to mitigation -
using application-layer protocol negotiation (ALPN) - has now been
standardized by the IETF as RFC 8737. This ballot replaces the poorly
specified and potentially insecure 'method 10' with a new 'method 20' based
on RFC 8737.

The ballot proposed no transition period during which method 10, or
validations performed using method 10 may continue to be relied upon. The
only known current use of method 10 is an implementation of RFC 8737 that
would remain compliant (although it may require changes to the CA's CPS and
the identifier of the method that is being logged when performing
validations).

This ballot also limits the use of the new method to the specific FQDN that
was validated - different subdomains require new validations, and wildcards
are not permitted. This requirement is not the result of a specific known
risk but rather stems from a belief that DNS-based validation methods are
more appropriate for verifying control over an entire subdomain.

[1]
https://groups.google.com/d/msg/mozilla.dev.security.policy/RHsIInIjJA0/LKrN
i35aAQAJ


The following motion has been proposed by Wayne Thayer of Mozilla and
endorsed by Roland Shoemaker of Let's Encrypt and Tim Hollebeek of DigiCert.

-- MOTION BEGINS --

This ballot modifies the ?Baseline Requirements for the Issuance and
Management of Publicly-Trusted Certificates? as follows, based on Version
1.7.0:

MODIFY section 3.2.2.4 as defined in the following redline:
https://github.com/cabforum/documents/compare/df5bd3b00e3a215202dedafa68bf8f
608d47041b...26913aa7f75a78eff1af5cb628451b9433011a67

-- MOTION ENDS --


This ballot proposes a Final Maintenance Guideline.

The procedure for approval of this ballot is as follows:

Discussion (7+ days)

Start Time: 31-July, 2020 17:00 UTC

End Time: not before 7-August, 2020 17:00 UTC

Vote for approval (7 days)

Start Time: 7-August, 2020 20:00 UTC

End Time: 14-August, 2020 20:00 UTC
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.cabforum.org/pipermail/servercert-wg/attachments/20200807/c88d
4dc6/attachment-0001.html>

------------------------------

Subject: Digest Footer

_______________________________________________
Servercert-wg mailing list
Servercert-wg at cabforum.org
https://lists.cabforum.org/mailman/listinfo/servercert-wg


------------------------------

End of Servercert-wg Digest, Vol 26, Issue 5
********************************************
_______________________________________________
Servercert-wg mailing list
Servercert-wg at cabforum.org
https://lists.cabforum.org/mailman/listinfo/servercert-wg