Deprecating TLSv1.0 and TLSv1.1
draft-ietf-tls-oldversions-deprecate-01

Document Type Active Internet-Draft (tls WG)
Last updated 2018-11-07
Replaces draft-moriarty-tls-oldversions-diediedie
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Internet Engineering Task Force                              K. Moriarty
Internet-Draft                                                  Dell EMC
Updates: 8465 8422 7568 7562 7507 7465                        S. Farrell
         7255 7030 6750 6749 6739 6367            Trinity College Dublin
         6176 6042 5878 5734 5469 5422                  November 8, 2018
         5364 5281 5263 5238 5216 5158
         5091 5054 5049 5024 5023 5019
         5018 4992 4976 4975 4964 4851
         4823 4791 4785 4744 4743 4732
         4712 4681 4680 4642 4616 4582
         4540 4531 4513 4497 4279 4261
         4235 4217 4168 4162 4111 4097
         3983 3943 3903 3887 3871 3856
         3767 3749 3656 3568 3552 3501
         3470 3436 3329 3261 (if
         approved)
Intended status: Standards Track
Expires: May 12, 2019

                    Deprecating TLSv1.0 and TLSv1.1
                draft-ietf-tls-oldversions-deprecate-01

Abstract

   This document, if approved, formally deprecates Transport Layer
   Security (TLS) versions 1.0 [RFC2246] and 1.1 [RFC4346] and moves
   these documents to the historic state.  These versions lack support
   for current and recommended cipher suites, and various government and
   industry profiles of applications using TLS now mandate avoiding
   these old TLS versions.  TLSv1.2 has been the recommended version for
   IETF protocols since 2008, providing sufficient time to transition
   away from older versions.  Products having to support older versions
   increase the attack surface unnecessarily and increase opportunities
   for misconfigurations.  Supporting these older versions also requires
   additional effort for library and product maintenance.

   This document updates many RFCs that normatively refer to TLS1.0 or
   TLS1.1 as described herein.  This document also updates RFC 7525 and
   hence is part of BCP195.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute

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   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on May 12, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Updates . . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Support for Deprecation . . . . . . . . . . . . . . . . . . .   4
   3.  SHA-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  Do Not Use TLSv1.0  . . . . . . . . . . . . . . . . . . . . .   6
   5.  Do Not Use TLSv1.1  . . . . . . . . . . . . . . . . . . . . .   6
   6.  Updates to RFC7525  . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   8
     10.2.  Informative References . . . . . . . . . . . . . . . . .  16
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  20
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  20

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1.  Introduction

   Transport Layer Security (TLS) versions 1.0 [RFC2246] and 1.1
   [RFC4346] were superceded by TLSv1.2 [RFC5246] in 2008, which has now
   itself been superceded by TLSv1.3 [RFC8446].  It is therefore timely
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