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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Comodo proposes the following motion, looking for a seconder.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Proposal: Modify the Baseline Requirements v1.4.9 as follows:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>3.2.2.8. CAA Records<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Change:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As part of the issuance process, the CA MUST check for a CAA record for each dNSName in the subjectAltName extension of the certificate to be issued, according to the procedure in RFC 6844, following the processing instructions set down in RFC 6844 for any records found. If the CA issues, they MUST do so within the TTL of the CAA record, or 8 hours, whichever is greater.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>As part of the issuance process, the CA MUST check for CAA records and follow the processing instructions for any records found, for each dNSName in the subjectAltName extension of the certificate to be issued, as specified in RFC 6844 as amended by Errata 5065 (Appendix A). If the CA issues, they MUST do so within the TTL of the CAA record, or 8 hours, whichever is greater.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Add the following as an appendix.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Appendix A:<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>The following errata report has been held for document update for RFC6844, "DNS Certification Authority Authorization (CAA) Resource Record".<br><br>--------------------------------------<br>You may review the report below and at:<br><a href="http://www.rfc-editor.org/errata/eid5065" target="_blank">http://www.rfc-editor.org/errata/eid5065</a><br><br>--------------------------------------<br>Status: Held for Document Update<br>Type: Technical<br><br>Reported by: Phillip Hallam-Baker <<a href="mailto:philliph@comodo.com" target="_blank">philliph@comodo.com</a>> Date Reported: 2017-07-10 Held by: EKR (IESG)<br><br>Section: 4<br><br>Original Text<br>-------------<br> Let CAA(X) be the record set returned in response to performing a CAA<br> record query on the label X, P(X) be the DNS label immediately above<br> X in the DNS hierarchy, and A(X) be the target of a CNAME or DNAME<br> alias record specified at the label X.<br><br> o If CAA(X) is not empty, R(X) = CAA (X), otherwise<br><br> o If A(X) is not null, and R(A(X)) is not empty, then R(X) =<br> R(A(X)), otherwise<br><br> o If X is not a top-level domain, then R(X) = R(P(X)), otherwise<br><br> o R(X) is empty.<br><br>Corrected Text<br>--------------<br> Let CAA(X) be the record set returned in response to performing a CAA<br> record query on the label X, P(X) be the DNS label immediately above<br> X in the DNS hierarchy, and A(X) be the target of a CNAME or DNAME<br> alias record chain specified at the label X.<br><br> o If CAA(X) is not empty, R(X) = CAA (X), otherwise<br><br> o If A(X) is not null, and CAA(A(X)) is not empty, then R(X) =<br> CAA(A(X)), otherwise<br><br> o If X is not a top-level domain, then R(X) = R(P(X)), otherwise<br><br> o R(X) is empty.<br><br> Thus, when a search at node X returns a CNAME record, the CA will<br> follow the CNAME record chain to its target. If the target label<br> contains a CAA record, it is returned.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> Otherwise, the CA continues the search at<br> the parent of node X.<br><br> Note that the search does not include the parent of a target of a<br> CNAME record (except when the CNAME points back to its own path).<br><br> To prevent resource exhaustion attacks, CAs SHOULD limit the length of<br> CNAME chains that are accepted. However CAs MUST process CNAME<br> chains that contain 8 or fewer CNAME records.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>