[openssl/openssl] e609a4: Fix supported_groups handing in TLSv1.2

[Matt Caswell]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: e609a4565f9ededc5c982175c297bb08058f767c
      https://github.com/openssl/openssl/commit/e609a4565f9ededc5c982175c297bb08058f767c
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-06-27 (Tue, 27 Jun 2023)

  Changed paths:
    M ssl/t1_lib.c

  Log Message:
  -----------
  Fix supported_groups handing in TLSv1.2

In TLSv1.2 we should not attempt to use a supported_group value that is
intended for use with TLSv1.3 - even if both the server and the client
support it, e.g. the ffdhe groups are supported by OpenSSL for TLSv1.3 but
not for TLSv1.2.

Fixes #21081

Reviewed-by: Viktor Dukhovni <viktor at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21274)


  Commit: 2c59d54cd7cb741c4547311ca1b8479e08dce0b7
      https://github.com/openssl/openssl/commit/2c59d54cd7cb741c4547311ca1b8479e08dce0b7
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-06-27 (Tue, 27 Jun 2023)

  Changed paths:
    M test/ssl-tests/14-curves.cnf
    M test/ssl-tests/14-curves.cnf.in

  Log Message:
  -----------
  Add some test_ssl_new tests for the ffdhe groups

Reviewed-by: Viktor Dukhovni <viktor at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21274)


Compare: https://github.com/openssl/openssl/compare/810f7dc1c7cc...2c59d54cd7cb