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-rw-r--r--lib/ssl/test/ssl_basic_SUITE.erl39
1 files changed, 38 insertions, 1 deletions
diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index 77ef8088b4..3fcc5d2ee7 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -91,7 +91,8 @@ basic_tests() ->
connect_twice,
connect_dist,
clear_pem_cache,
- defaults
+ defaults,
+ fallback
].
options_tests() ->
@@ -284,6 +285,14 @@ init_per_testcase(empty_protocol_versions, Config) ->
ssl:start(),
Config;
+init_per_testcase(fallback, Config) ->
+ case tls_record:highest_protocol_version([]) of
+ {3, N} when N > 1 ->
+ Config;
+ _ ->
+ {skip, "Not relevant if highest supported version is less than 3.2"}
+ end;
+
%% init_per_testcase(different_ca_peer_sign, Config0) ->
%% ssl_test_lib:make_mix_cert(Config0);
@@ -648,6 +657,34 @@ clear_pem_cache(Config) when is_list(Config) ->
0 = ets:info(FilRefDb, size).
%%--------------------------------------------------------------------
+
+fallback() ->
+ [{doc, "Test TLS_FALLBACK_SCSV downgrade prevention"}].
+
+fallback(Config) when is_list(Config) ->
+ ClientOpts = ?config(client_opts, Config),
+ ServerOpts = ?config(server_opts, Config),
+ {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+ Server =
+ ssl_test_lib:start_server_error([{node, ServerNode}, {port, 0},
+ {from, self()},
+ {options, ServerOpts}]),
+
+ Port = ssl_test_lib:inet_port(Server),
+
+ Client =
+ ssl_test_lib:start_client_error([{node, ClientNode},
+ {port, Port}, {host, Hostname},
+ {from, self()}, {options,
+ [{fallback, true},
+ {versions, ['tlsv1']}
+ | ClientOpts]}]),
+
+ ssl_test_lib:check_result(Server, {error,{tls_alert,"inappropriate fallback"}},
+ Client, {error,{tls_alert,"inappropriate fallback"}}).
+
+%%--------------------------------------------------------------------
peername() ->
[{doc,"Test API function peername/1"}].