bpo-4379: Skip TLS 1.0/1.1 tests under OpenSSL 3.0.0 (pythonGH-25304)

Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit 5151d64)

Co-authored-by: Christian Heimes <christian@python.org>

Author: tiran

Lib/test/test_ssl.py

@@ -38,6 +38,7 @@
 IS_LIBRESSL = ssl.OPENSSL_VERSION.startswith('LibreSSL')
 IS_OPENSSL_1_1_0 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 0)
 IS_OPENSSL_1_1_1 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (1, 1, 1)
+IS_OPENSSL_3_0_0 = not IS_LIBRESSL and ssl.OPENSSL_VERSION_INFO >= (3, 0, 0)
 PY_SSL_DEFAULT_CIPHERS = sysconfig.get_config_var('PY_SSL_DEFAULT_CIPHERS')
 
 PROTOCOL_TO_TLS_VERSION = {}
@@ -208,6 +209,10 @@ def has_tls_version(version):
     if not getattr(ssl, f'HAS_{version.name}'):
         return False
 
+    if IS_OPENSSL_3_0_0 and version < ssl.TLSVersion.TLSv1_2:
+        # bpo43791: 3.0.0-alpha14 fails with TLSV1_ALERT_INTERNAL_ERROR
+        return False
+
     # check runtime and dynamic crypto policy settings. A TLS version may
     # be compiled in but disabled by a policy or config option.
     ctx = ssl.SSLContext()

Misc/NEWS.d/next/Tests/2021-04-09-15-10-38.bpo-43791.4KxiXK.rst

@@ -0,0 +1,2 @@
+OpenSSL 3.0.0: Disable testing of legacy protocols TLS 1.0 and 1.1. Tests
+are failing with TLSV1_ALERT_INTERNAL_ERROR.