On Fri, 15 Nov 2024 19:50:33 GMT, Artur Barashev <abaras...@openjdk.org> wrote:
> These cipher suites do not preserve forward-secrecy and are not commonly > used. Other TLS implementations (ex: Rustls) do not support or enable these > suites by default. RFC 9325 [1] states that these suites should not be used. > The IETF Draft "Deprecating Obsolete Key Exchange Methods in TLS" [2] > mandates that these suites not be used. > > Some TLS_RSA_* cipher suites are already disabled because they use DES, 3DES, > RC4, or NULL, which are disabled. This action will disable all remaining > TLS_RSA cipher suites. > > [1] RFC 9325, Recommendations for Secure Use of TLS and DTLS > (https://www.rfc-editor.org/rfc/rfc9325.html#section-4.1-2.5.1): > "Implementations SHOULD NOT negotiate cipher suites based on RSA key > transport, a.k.a. "static RSA". Rationale: These cipher suites, which have > assigned values starting with the string "TLS_RSA_WITH_*", have several > drawbacks, especially the fact that they do not support forward secrecy." > [2] IETF Draft, Deprecating Obsolete Key Exchange Methods in TLS > (https://www.ietf.org/archive/id/draft-ietf-tls-deprecate-obsolete-kex-05.html#section-4): > "Clients MUST NOT offer and servers MUST NOT select RSA cipher suites in TLS > 1.2 connections. (Note that TLS 1.0 and 1.1 are deprecated by [RFC8996], and > TLS 1.3 does not support static RSA [RFC8446].)" This pull request has now been integrated. Changeset: 882d6358 Author: Artur Barashev <abaras...@openjdk.org> Committer: Sean Mullan <mul...@openjdk.org> URL: https://git.openjdk.org/jdk/commit/882d6358074135b2c4fe21b32bd73f40022980bc Stats: 82 lines in 13 files changed: 36 ins; 18 del; 28 mod 8245545: Disable TLS_RSA cipher suites Reviewed-by: mullan ------------- PR: https://git.openjdk.org/jdk/pull/22163
