Re: [TLS] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice

Martin Duke <martin.h.duke@gmail.com> Mon, 30 November 2020 03:02 UTC

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From: Martin Duke <martin.h.duke@gmail.com>
Date: Sun, 29 Nov 2020 19:02:05 -0800
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To: Last Call <last-call@ietf.org>
Cc: IETF-Announce <ietf-announce@ietf.org>, Kathleen Moriarty <kathleen.moriarty.ietf@gmail.com>, tls-chairs@ietf.org, draft-ietf-tls-oldversions-deprecate@ietf.org, tls@ietf.org
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Subject: Re: [TLS] Last Call: <draft-ietf-tls-oldversions-deprecate-09.txt> (Deprecating TLSv1.0 and TLSv1.1) to Best Current Practice
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I support this draft. RFCs do not always equal the real world, but less
secure versions of TLS should be deprecated with the strongest possible
terms.

On Mon, Nov 9, 2020 at 2:27 PM The IESG <iesg-secretary@ietf.org> wrote:

>
> The IESG has received a request from the Transport Layer Security WG (tls)
> to
> consider the following document: - 'Deprecating TLSv1.0 and TLSv1.1'
>   <draft-ietf-tls-oldversions-deprecate-09.txt> as Best Current Practice
>
> The IESG plans to make a decision in the next few weeks, and solicits final
> comments on this action. Please send substantive comments to the
> last-call@ietf.org mailing lists by 2020-11-30. Exceptionally, comments
> may
> be sent to iesg@ietf.org instead. In either case, please retain the
> beginning
> of the Subject line to allow automated sorting.
>
> 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.
>
>
>
>
> The file can be obtained via
> https://datatracker.ietf.org/doc/draft-ietf-tls-oldversions-deprecate/
>
>
>
> No IPR declarations have been submitted directly on this I-D.
>
>
> The document contains these normative downward references.
> See RFC 3967 for additional information:
>     rfc5024: ODETTE File Transfer Protocol 2.0 (Informational -
> Independent Submission Editor stream)
>     rfc5024: ODETTE File Transfer Protocol 2.0 (Informational -
> Independent Submission Editor stream)
>     rfc5023: The Atom Publishing Protocol (Proposed Standard - IETF stream)
>     rfc5019: The Lightweight Online Certificate Status Protocol (OCSP)
> Profile for High-Volume Environments (Proposed Standard - IETF stream)
>     rfc5019: The Lightweight Online Certificate Status Protocol (OCSP)
> Profile for High-Volume Environments (Proposed Standard - IETF stream)
>     rfc5018: Connection Establishment in the Binary Floor Control Protocol
> (BFCP) (Proposed Standard - IETF stream)
>     rfc4992: XML Pipelining with Chunks for the Internet Registry
> Information Service (Proposed Standard - IETF stream)
>     rfc4992: XML Pipelining with Chunks for the Internet Registry
> Information Service (Proposed Standard - IETF stream)
>     rfc4976: Relay Extensions for the Message Sessions Relay Protocol
> (MSRP) (Proposed Standard - IETF stream)
>     rfc4975: The Message Session Relay Protocol (MSRP) (Proposed Standard
> - IETF stream)
>     rfc4975: The Message Session Relay Protocol (MSRP) (Proposed Standard
> - IETF stream)
>     rfc4964: The P-Answer-State Header Extension to the Session Initiation
> Protocol for the Open Mobile Alliance Push to Talk over Cellular
> (Informational - IETF stream)
>     rfc4964: The P-Answer-State Header Extension to the Session Initiation
> Protocol for the Open Mobile Alliance Push to Talk over Cellular
> (Informational - IETF stream)
>     rfc4851: The Flexible Authentication via Secure Tunneling Extensible
> Authentication Protocol Method (EAP-FAST) (Informational - IETF stream)
>     rfc4851: The Flexible Authentication via Secure Tunneling Extensible
> Authentication Protocol Method (EAP-FAST) (Informational - IETF stream)
>     rfc4823: FTP Transport for Secure Peer-to-Peer Business Data
> Interchange over the Internet (Informational - IETF stream)
>     rfc4823: FTP Transport for Secure Peer-to-Peer Business Data
> Interchange over the Internet (Informational - IETF stream)
>     rfc4791: Calendaring Extensions to WebDAV (CalDAV) (Proposed Standard
> - IETF stream)
>     rfc4791: Calendaring Extensions to WebDAV (CalDAV) (Proposed Standard
> - IETF stream)
>     rfc4785: Pre-Shared Key (PSK) Ciphersuites with NULL Encryption for
> Transport Layer Security (TLS) (Proposed Standard - IETF stream)
>     rfc4785: Pre-Shared Key (PSK) Ciphersuites with NULL Encryption for
> Transport Layer Security (TLS) (Proposed Standard - IETF stream)
>     rfc4744: Using the NETCONF Protocol over the Blocks Extensible
> Exchange Protocol (BEEP) (Historic - IETF stream)
>     rfc4744: Using the NETCONF Protocol over the Blocks Extensible
> Exchange Protocol (BEEP) (Historic - IETF stream)
>     rfc4743: Using NETCONF over the Simple Object Access Protocol (SOAP)
> (Historic - IETF stream)
>     rfc4743: Using NETCONF over the Simple Object Access Protocol (SOAP)
> (Historic - IETF stream)
>     rfc4732: Internet Denial-of-Service Considerations (Informational -
> IAB stream)
>     rfc4732: Internet Denial-of-Service Considerations (Informational -
> IAB stream)
>     rfc4712: Transport Mappings for Real-time Application
> Quality-of-Service Monitoring (RAQMON) Protocol Data Unit (PDU) (Proposed
> Standard - IETF stream)
>     rfc4712: Transport Mappings for Real-time Application
> Quality-of-Service Monitoring (RAQMON) Protocol Data Unit (PDU) (Proposed
> Standard - IETF stream)
>     rfc4681: TLS User Mapping Extension (Proposed Standard - IETF stream)
>     rfc4680: TLS Handshake Message for Supplemental Data (Proposed
> Standard - IETF stream)
>     rfc4680: TLS Handshake Message for Supplemental Data (Proposed
> Standard - IETF stream)
>     rfc4642: Using Transport Layer Security (TLS) with Network News
> Transfer Protocol (NNTP) (Proposed Standard - IETF stream)
>     rfc4642: Using Transport Layer Security (TLS) with Network News
> Transfer Protocol (NNTP) (Proposed Standard - IETF stream)
>     rfc4616: The PLAIN Simple Authentication and Security Layer (SASL)
> Mechanism (Proposed Standard - IETF stream)
>     rfc4616: The PLAIN Simple Authentication and Security Layer (SASL)
> Mechanism (Proposed Standard - IETF stream)
>     rfc4582: The Binary Floor Control Protocol (BFCP) (Proposed Standard -
> IETF stream)
>     rfc4582: The Binary Floor Control Protocol (BFCP) (Proposed Standard -
> IETF stream)
>     rfc4540: NEC's Simple Middlebox Configuration (SIMCO) Protocol Version
> 3.0 (Experimental - Independent Submission Editor stream)
>     rfc4540: NEC's Simple Middlebox Configuration (SIMCO) Protocol Version
> 3.0 (Experimental - Independent Submission Editor stream)
>     rfc4531: Lightweight Directory Access Protocol (LDAP) Turn Operation
> (Experimental - IETF stream)
>     rfc4513: Lightweight Directory Access Protocol (LDAP): Authentication
> Methods and Security Mechanisms (Proposed Standard - IETF stream)
>     rfc3436: Transport Layer Security over Stream Control Transmission
> Protocol (Proposed Standard - IETF stream)
>     rfc3436: Transport Layer Security over Stream Control Transmission
> Protocol (Proposed Standard - IETF stream)
>     rfc3329: Security Mechanism Agreement for the Session Initiation
> Protocol (SIP) (Proposed Standard - IETF stream)
>     rfc3329: Security Mechanism Agreement for the Session Initiation
> Protocol (SIP) (Proposed Standard - IETF stream)
>     rfc3261: SIP: Session Initiation Protocol (Proposed Standard - IETF
> stream)
>     rfc3261: SIP: Session Initiation Protocol (Proposed Standard - IETF
> stream)
>     rfc2246: The TLS Protocol Version 1.0 (Proposed Standard - IETF stream)
>     rfc6749: The OAuth 2.0 Authorization Framework (Proposed Standard -
> IETF stream)
>     rfc6739: Synchronizing Service Boundaries and <mapping> Elements Based
> on the Location-to-Service Translation (LoST) Protocol (Experimental - IETF
> stream)
>     rfc6739: Synchronizing Service Boundaries and <mapping> Elements Based
> on the Location-to-Service Translation (LoST) Protocol (Experimental - IETF
> stream)
>     rfc6367: Addition of the Camellia Cipher Suites to Transport Layer
> Security (TLS) (Informational - IETF stream)
>     rfc6367: Addition of the Camellia Cipher Suites to Transport Layer
> Security (TLS) (Informational - IETF stream)
>     rfc6176: Prohibiting Secure Sockets Layer (SSL) Version 2.0 (Proposed
> Standard - IETF stream)
>     rfc6176: Prohibiting Secure Sockets Layer (SSL) Version 2.0 (Proposed
> Standard - IETF stream)
>     rfc6042: Transport Layer Security (TLS) Authorization Using KeyNote
> (Informational - Independent Submission Editor stream)
>     rfc5878: Transport Layer Security (TLS) Authorization Extensions
> (Experimental - IETF stream)
>     rfc5469: DES and IDEA Cipher Suites for Transport Layer Security (TLS)
> (Informational - IETF stream)
>     rfc5469: DES and IDEA Cipher Suites for Transport Layer Security (TLS)
> (Informational - IETF stream)
>     rfc5422: Dynamic Provisioning Using Flexible Authentication via Secure
> Tunneling Extensible Authentication Protocol (EAP-FAST) (Informational -
> IETF stream)
>     rfc5422: Dynamic Provisioning Using Flexible Authentication via Secure
> Tunneling Extensible Authentication Protocol (EAP-FAST) (Informational -
> IETF stream)
>     rfc5364: Extensible Markup Language (XML) Format Extension for
> Representing Copy Control Attributes in Resource Lists (Proposed Standard -
> IETF stream)
>     rfc5364: Extensible Markup Language (XML) Format Extension for
> Representing Copy Control Attributes in Resource Lists (Proposed Standard -
> IETF stream)
>     rfc5281: Extensible Authentication Protocol Tunneled Transport Layer
> Security Authenticated Protocol Version 0 (EAP-TTLSv0) (Informational -
> IETF stream)
>     rfc5281: Extensible Authentication Protocol Tunneled Transport Layer
> Security Authenticated Protocol Version 0 (EAP-TTLSv0) (Informational -
> IETF stream)
>     rfc5263: Session Initiation Protocol (SIP) Extension for Partial
> Notification of Presence Information (Proposed Standard - IETF stream)
>     rfc5263: Session Initiation Protocol (SIP) Extension for Partial
> Notification of Presence Information (Proposed Standard - IETF stream)
>     rfc5238: Datagram Transport Layer Security (DTLS) over the Datagram
> Congestion Control Protocol (DCCP) (Proposed Standard - IETF stream)
>     rfc5216: The EAP-TLS Authentication Protocol (Proposed Standard - IETF
> stream)
>     rfc5216: The EAP-TLS Authentication Protocol (Proposed Standard - IETF
> stream)
>     rfc5158: 6to4 Reverse DNS Delegation Specification (Informational -
> IETF stream)
>     rfc5091: Identity-Based Cryptography Standard (IBCS) #1: Supersingular
> Curve Implementations of the BF and BB1 Cryptosystems (Informational - IETF
> stream)
>     rfc5054: Using the Secure Remote Password (SRP) Protocol for TLS
> Authentication (Informational - IETF stream)
>     rfc5054: Using the Secure Remote Password (SRP) Protocol for TLS
> Authentication (Informational - IETF stream)
>     rfc5049: Applying Signaling Compression (SigComp) to the Session
> Initiation Protocol (SIP) (Proposed Standard - IETF stream)
>     rfc3501: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 (Proposed
> Standard - IETF stream)
>     rfc3501: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 (Proposed
> Standard - IETF stream)
>     rfc4346: The Transport Layer Security (TLS) Protocol Version 1.1
> (Proposed Standard - IETF stream)
>     rfc2246: The TLS Protocol Version 1.0 (Proposed Standard - IETF stream)
>     rfc4346: The Transport Layer Security (TLS) Protocol Version 1.1
> (Proposed Standard - IETF stream)
>     rfc4279: Pre-Shared Key Ciphersuites for Transport Layer Security
> (TLS) (Proposed Standard - IETF stream)
>     rfc4261: Common Open Policy Service (COPS) Over Transport Layer
> Security (TLS) (Proposed Standard - IETF stream)
>     rfc4235: An INVITE-Initiated Dialog Event Package for the Session
> Initiation Protocol (SIP) (Proposed Standard - IETF stream)
>     rfc4235: An INVITE-Initiated Dialog Event Package for the Session
> Initiation Protocol (SIP) (Proposed Standard - IETF stream)
>     rfc4217: Securing FTP with TLS (Proposed Standard - IETF stream)
>     rfc4168: The Stream Control Transmission Protocol (SCTP) as a
> Transport for the Session Initiation Protocol (SIP) (Proposed Standard -
> IETF stream)
>     rfc4162: Addition of SEED Cipher Suites to Transport Layer Security
> (TLS) (Proposed Standard - IETF stream)
>     rfc4111: Security Framework for Provider-Provisioned Virtual Private
> Networks (PPVPNs) (Informational - IETF stream)
>     rfc4097: Middlebox Communications (MIDCOM) Protocol Evaluation
> (Informational - IETF stream)
>     rfc4097: Middlebox Communications (MIDCOM) Protocol Evaluation
> (Informational - IETF stream)
>     rfc3983: Using the Internet Registry Information Service (IRIS) over
> the Blocks Extensible Exchange Protocol (BEEP) (Proposed Standard - IETF
> stream)
>     rfc3943: Transport Layer Security (TLS) Protocol Compression Using
> Lempel-Ziv-Stac (LZS) (Informational - IETF stream)
>     rfc3903: Session Initiation Protocol (SIP) Extension for Event State
> Publication (Proposed Standard - IETF stream)
>     rfc6749: The OAuth 2.0 Authorization Framework (Proposed Standard -
> IETF stream)
>     rfc3887: Message Tracking Query Protocol (Proposed Standard - IETF
> stream)
>     rfc3871: Operational Security Requirements for Large Internet Service
> Provider (ISP) IP Network Infrastructure (Informational - IETF stream)
>     rfc3871: Operational Security Requirements for Large Internet Service
> Provider (ISP) IP Network Infrastructure (Informational - IETF stream)
>     rfc3856: A Presence Event Package for the Session Initiation Protocol
> (SIP) (Proposed Standard - IETF stream)
>     rfc3767: Securely Available Credentials Protocol (Proposed Standard -
> IETF stream)
>     rfc3749: Transport Layer Security Protocol Compression Methods
> (Proposed Standard - IETF stream)
>     rfc3749: Transport Layer Security Protocol Compression Methods
> (Proposed Standard - IETF stream)
>     rfc3656: The Mailbox Update (MUPDATE) Distributed Mailbox Database
> Protocol (Experimental - Independent Submission Editor stream)
>     rfc3568: Known Content Network (CN) Request-Routing Mechanisms
> (Informational - IETF stream)
>     rfc6750: The OAuth 2.0 Authorization Framework: Bearer Token Usage
> (Proposed Standard - IETF stream)
>     rfc6750: The OAuth 2.0 Authorization Framework: Bearer Token Usage
> (Proposed Standard - IETF stream)
>     rfc7030: Enrollment over Secure Transport (Proposed Standard - IETF
> stream)
>     rfc7030: Enrollment over Secure Transport (Proposed Standard - IETF
> stream)
>     rfc7465: Prohibiting RC4 Cipher Suites (Proposed Standard - IETF
> stream)
>     rfc7465: Prohibiting RC4 Cipher Suites (Proposed Standard - IETF
> stream)
>     rfc7507: TLS Fallback Signaling Cipher Suite Value (SCSV) for
> Preventing Protocol Downgrade Attacks (Proposed Standard - IETF stream)
>     rfc7507: TLS Fallback Signaling Cipher Suite Value (SCSV) for
> Preventing Protocol Downgrade Attacks (Proposed Standard - IETF stream)
>     rfc7562: Transport Layer Security (TLS) Authorization Using Digital
> Transmission Content Protection (DTCP) Certificates (Informational -
> Independent Submission Editor stream)
>     rfc7562: Transport Layer Security (TLS) Authorization Using Digital
> Transmission Content Protection (DTCP) Certificates (Informational -
> Independent Submission Editor stream)
>     rfc7568: Deprecating Secure Sockets Layer Version 3.0 (Proposed
> Standard - IETF stream)
>     rfc7568: Deprecating Secure Sockets Layer Version 3.0 (Proposed
> Standard - IETF stream)
>     rfc8422: Elliptic Curve Cryptography (ECC) Cipher Suites for Transport
> Layer Security (TLS) Versions 1.2 and Earlier (Proposed Standard - IETF
> stream)
>     rfc8422: Elliptic Curve Cryptography (ECC) Cipher Suites for Transport
> Layer Security (TLS) Versions 1.2 and Earlier (Proposed Standard - IETF
> stream)
>
>
>
>
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