[pkix] [Technical Errata Reported] RFC6844 (5452)

RFC Errata System <rfc-editor@rfc-editor.org> Mon, 06 August 2018 18:13 UTC

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Subject: [pkix] [Technical Errata Reported] RFC6844 (5452)
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The following errata report has been submitted for RFC6844,
"DNS Certification Authority Authorization (CAA) Resource Record".

You may review the report below and at:

Type: Technical
Reported by: EBNF, text, examples do not match <rsalz@akamaic.om>

Section: GLOBAL

Original Text

The EBNF (scattered throughout the document) does not match the examples
nor the prose. It is also ambiguous in places (allowing two different
interpretations of a parameter list), and nonsensical in others (such
as the handling of whitespace).

Corrected Text
The EBNF should be corrected as follows:

issuevalue = *WSP [domain *WSP] [";" *WSP [parameters *WSP]]

domain = label *("." label)
label = (ALPHA / DIGIT) *( *("-") (ALPHA / DIGIT))

parameters = (parameter *WSP ";" *WSP parameters) / parameter
parameter = tag *WSP "=" *WSP value
value = *(%x21-3A / %x3C-7E)

I am proposing this on behalf of the IETF ACME WG. We want to submit a standards-track document, but the current CAA specification is broken. We know it is being revised, but we do not want to wait.  Our AD has said to submit the errata and he will accept it.

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RFC6844 (draft-ietf-pkix-caa-15)
Title               : DNS Certification Authority Authorization (CAA) Resource Record
Publication Date    : January 2013
Author(s)           : P. Hallam-Baker, R. Stradling
Category            : PROPOSED STANDARD
Source              : Public-Key Infrastructure (X.509)
Area                : Security
Stream              : IETF
Verifying Party     : IESG