Deprecating TLSv1.0 and TLSv1.1
draft-ietf-tls-oldversions-deprecate-08

The information below is for an old version of the document
Document Type Active Internet-Draft (tls WG)
Authors Kathleen Moriarty  , Stephen Farrell 
Last updated 2020-11-09 (latest revision 2020-10-14)
Replaces draft-moriarty-tls-oldversions-diediedie
Stream Internent Engineering Task Force (IETF)
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Stream WG state Submitted to IESG for Publication
Document shepherd Sean Turner
Shepherd write-up Show (last changed 2020-07-27)
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Send notices to Sean Turner <sean@sn3rd.com>, Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>
Internet Engineering Task Force                              K. Moriarty
Internet-Draft                                                  Dell EMC
Obsoletes: 7507 (if approved)                                 S. Farrell
Updates: 8465 8422 8261 7568 7562 7525            Trinity College Dublin
         7465 7030 6750 6749 6739 6460                  October 14, 2020
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Intended status: Best Current Practice
Expires: April 17, 2021

                    Deprecating TLSv1.0 and TLSv1.1
                draft-ietf-tls-oldversions-deprecate-08

Abstract

   This document, if approved, formally deprecates Transport Layer
   Security (TLS) versions 1.0 (RFC 2246) and 1.1 (RFC 4346).
   Accordingly, those documents (will be moved|have been moved) to
   Historic status.  These versions lack support for current and
   recommended cryptographic algorithms and mechanisms, 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.  Removing
   support for older versions from implementations reduces the attack
   surface, reduces opportunity for misconfiguration, and streamlines
   library and product maintenance.

   This document also deprecates Datagram TLS (DTLS) version 1.0
   (RFC6347), but not DTLS version 1.2, and there is no DTLS version
   1.1.

   This document updates many RFCs that normatively refer to TLSv1.0 or
   TLSv1.1 as described herein.  This document also updates the best
   practices for TLS usage in RFC 7525 and hence is part of BCP195.

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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
   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 April 17, 2021.

Copyright Notice

   Copyright (c) 2020 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.  RFCs Updated  . . . . . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   5
   2.  Support for Deprecation . . . . . . . . . . . . . . . . . . .   5
   3.  SHA-1 Usage Problematic in TLSv1.0 and TLSv1.1  . . . . . . .   6
   4.  Do Not Use TLSv1.0  . . . . . . . . . . . . . . . . . . . . .   6
   5.  Do Not Use TLSv1.1  . . . . . . . . . . . . . . . . . . . . .   7
   6.  Updates to RFC7525  . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   8
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   9.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   8
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     10.1.  Normative References . . . . . . . . . . . . . . . . . .   9
     10.2.  Informative References . . . . . . . . . . . . . . . . .  17

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   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  21
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