[openssl/openssl] 01e765: Fix supported_groups handing in TLSv1.2

[Matt Caswell]

  Branch: refs/heads/openssl-3.1
  Home:   https://github.com/openssl/openssl
  Commit: 01e765f0547eb67631820647a0cfeb9b3741491a
      https://github.com/openssl/openssl/commit/01e765f0547eb67631820647a0cfeb9b3741491a
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-06-29 (Thu, 29 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: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Viktor Dukhovni <viktor at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21295)


  Commit: 5cd269461ac7a7920299232b1c1b9857c1e1908f
      https://github.com/openssl/openssl/commit/5cd269461ac7a7920299232b1c1b9857c1e1908f
  Author: Matt Caswell <matt at openssl.org>
  Date:   2023-06-29 (Thu, 29 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: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Viktor Dukhovni <viktor at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21295)


Compare: https://github.com/openssl/openssl/compare/f41c7125f76d...5cd269461ac7