diff options
Diffstat (limited to 'lib/ssl/src/ssl_connection.erl')
| -rw-r--r-- | lib/ssl/src/ssl_connection.erl | 120 |
1 files changed, 80 insertions, 40 deletions
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl index 6e7c8c5ddd..0e51106bfb 100644 --- a/lib/ssl/src/ssl_connection.erl +++ b/lib/ssl/src/ssl_connection.erl @@ -1,7 +1,7 @@ %% %% %CopyrightBegin% %% -%% Copyright Ericsson AB 2013-2016. All Rights Reserved. +%% Copyright Ericsson AB 2013-2017. All Rights Reserved. %% %% Licensed under the Apache License, Version 2.0 (the "License"); %% you may not use this file except in compliance with the License. @@ -148,19 +148,19 @@ socket_control(Connection, Socket, Pid, Transport) -> %%-------------------------------------------------------------------- socket_control(Connection, Socket, Pid, Transport, udp_listner) -> %% dtls listner process must have the socket control - {ok, dtls_socket:socket(Pid, Transport, Socket, Connection)}; + {ok, Connection:socket(Pid, Transport, Socket, Connection, undefined)}; socket_control(tls_connection = Connection, Socket, Pid, Transport, ListenTracker) -> case Transport:controlling_process(Socket, Pid) of ok -> - {ok, tls_socket:socket(Pid, Transport, Socket, Connection, ListenTracker)}; + {ok, Connection:socket(Pid, Transport, Socket, Connection, ListenTracker)}; {error, Reason} -> {error, Reason} end; socket_control(dtls_connection = Connection, {_, Socket}, Pid, Transport, ListenTracker) -> case Transport:controlling_process(Socket, Pid) of ok -> - {ok, tls_socket:socket(Pid, Transport, Socket, Connection, ListenTracker)}; + {ok, Connection:socket(Pid, Transport, Socket, Connection, ListenTracker)}; {error, Reason} -> {error, Reason} end. @@ -323,8 +323,14 @@ handle_session(#server_hello{cipher_suite = CipherSuite, -spec ssl_config(#ssl_options{}, client | server, #state{}) -> #state{}. %%-------------------------------------------------------------------- ssl_config(Opts, Role, State) -> - {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, CRLDbInfo, - OwnCert, Key, DHParams} = + {ok, #{cert_db_ref := Ref, + cert_db_handle := CertDbHandle, + fileref_db_handle := FileRefHandle, + session_cache := CacheHandle, + crl_db_info := CRLDbHandle, + private_key := Key, + dh_params := DHParams, + own_certificate := OwnCert}} = ssl_config:init(Opts, Role), Handshake = ssl_handshake:init_handshake_history(), TimeStamp = erlang:monotonic_time(), @@ -335,7 +341,7 @@ ssl_config(Opts, Role, State) -> file_ref_db = FileRefHandle, cert_db_ref = Ref, cert_db = CertDbHandle, - crl_db = CRLDbInfo, + crl_db = CRLDbHandle, session_cache = CacheHandle, private_key = Key, diffie_hellman_params = DHParams, @@ -357,11 +363,13 @@ init({call, From}, {start, Timeout}, State0, Connection) -> timer = Timer}), Connection:next_event(hello, Record, State); init({call, From}, {start, {Opts, EmOpts}, Timeout}, - #state{role = Role} = State0, Connection) -> + #state{role = Role, ssl_options = OrigSSLOptions, + socket_options = SockOpts} = State0, Connection) -> try - State = ssl_config(Opts, Role, State0), + SslOpts = ssl:handle_options(Opts, OrigSSLOptions), + State = ssl_config(SslOpts, Role, State0), init({call, From}, {start, Timeout}, - State#state{ssl_options = Opts, socket_options = EmOpts}, Connection) + State#state{ssl_options = SslOpts, socket_options = new_emulated(EmOpts, SockOpts)}, Connection) catch throw:Error -> {stop_and_reply, normal, {reply, From, {error, Error}}} end; @@ -426,11 +434,11 @@ abbreviated(internal, #finished{verify_data = Data} = Finished, verified -> ConnectionStates1 = ssl_record:set_server_verify_data(current_read, Data, ConnectionStates0), - State1 = + {State1, Actions} = finalize_handshake(State0#state{connection_states = ConnectionStates1}, abbreviated, Connection), {Record, State} = prepare_connection(State1#state{expecting_finished = false}, Connection), - Connection:next_event(connection, Record, State); + Connection:next_event(connection, Record, State, Actions); #alert{} = Alert -> handle_own_alert(Alert, Version, abbreviated, State0) end; @@ -864,11 +872,11 @@ handle_call({close, {Pid, Timeout}}, From, StateName, State0, Connection) when i %% When downgrading an TLS connection to a transport connection %% we must recive the close alert from the peer before releasing the %% transport socket. - {next_state, downgrade, State, [{timeout, Timeout, downgrade}]}; + {next_state, downgrade, State#state{terminated = true}, [{timeout, Timeout, downgrade}]}; handle_call({close, _} = Close, From, StateName, State, Connection) -> %% Run terminate before returning so that the reuseaddr - %% inet-option - Result = Connection:terminate(Close, StateName, State), + %% inet-option works properly + Result = Connection:terminate(Close, StateName, State#state{terminated = true}), {stop_and_reply, {shutdown, normal}, {reply, From, Result}, State}; handle_call({shutdown, How0}, From, _, @@ -1010,7 +1018,10 @@ handle_info(Msg, StateName, #state{socket = Socket, error_tag = Tag} = State) -> terminate(_, _, #state{terminated = true}) -> %% Happens when user closes the connection using ssl:close/1 %% we want to guarantee that Transport:close has been called - %% when ssl:close/1 returns. + %% when ssl:close/1 returns unless it is a downgrade where + %% we want to guarantee that close alert is recived before + %% returning. In both cases terminate has been run manually + %% before run by gen_statem which will end up here ok; terminate({shutdown, transport_closed} = Reason, @@ -1227,13 +1238,13 @@ new_server_hello(#server_hello{cipher_suite = CipherSuite, negotiated_version = Version} = State0, Connection) -> try server_certify_and_key_exchange(State0, Connection) of #state{} = State1 -> - State2 = server_hello_done(State1, Connection), + {State2, Actions} = server_hello_done(State1, Connection), Session = Session0#session{session_id = SessionId, cipher_suite = CipherSuite, compression_method = Compression}, {Record, State} = Connection:next_record(State2#state{session = Session}), - Connection:next_event(certify, Record, State) + Connection:next_event(certify, Record, State, Actions) catch #alert{} = Alert -> handle_own_alert(Alert, Version, hello, State0) @@ -1248,10 +1259,10 @@ resumed_server_hello(#state{session = Session, {_, ConnectionStates1} -> State1 = State0#state{connection_states = ConnectionStates1, session = Session}, - State2 = + {State2, Actions} = finalize_handshake(State1, abbreviated, Connection), {Record, State} = Connection:next_record(State2), - Connection:next_event(abbreviated, Record, State); + Connection:next_event(abbreviated, Record, State, Actions); #alert{} = Alert -> handle_own_alert(Alert, Version, hello, State0) end. @@ -1334,12 +1345,12 @@ client_certify_and_key_exchange(#state{negotiated_version = Version} = State0, Connection) -> try do_client_certify_and_key_exchange(State0, Connection) of State1 = #state{} -> - State2 = finalize_handshake(State1, certify, Connection), + {State2, Actions} = finalize_handshake(State1, certify, Connection), State3 = State2#state{ %% Reinitialize client_certificate_requested = false}, {Record, State} = Connection:next_record(State3), - Connection:next_event(cipher, Record, State) + Connection:next_event(cipher, Record, State, Actions) catch throw:#alert{} = Alert -> handle_own_alert(Alert, Version, certify, State0) @@ -1356,8 +1367,25 @@ server_certify_and_key_exchange(State0, Connection) -> request_client_cert(State2, Connection). certify_client_key_exchange(#encrypted_premaster_secret{premaster_secret= EncPMS}, - #state{private_key = Key} = State, Connection) -> - PremasterSecret = ssl_handshake:premaster_secret(EncPMS, Key), + #state{private_key = Key, client_hello_version = {Major, Minor} = Version} = State, Connection) -> + + %% Countermeasure for Bleichenbacher attack always provide some kind of premaster secret + %% and fail handshake later.RFC 5246 section 7.4.7.1. + PremasterSecret = + try ssl_handshake:premaster_secret(EncPMS, Key) of + Secret when erlang:byte_size(Secret) == ?NUM_OF_PREMASTERSECRET_BYTES -> + case Secret of + <<?BYTE(Major), ?BYTE(Minor), _/binary>> -> %% Correct + Secret; + <<?BYTE(_), ?BYTE(_), Rest/binary>> -> %% Version mismatch + <<?BYTE(Major), ?BYTE(Minor), Rest/binary>> + end; + _ -> %% erlang:byte_size(Secret) =/= ?NUM_OF_PREMASTERSECRET_BYTES + make_premaster_secret(Version, rsa) + catch + #alert{description = ?DECRYPT_ERROR} -> + make_premaster_secret(Version, rsa) + end, calculate_master_secret(PremasterSecret, State, Connection, certify, cipher); certify_client_key_exchange(#client_diffie_hellman_public{dh_public = ClientPublicDhKey}, @@ -1861,11 +1889,11 @@ cipher_role(server, Data, Session, #state{connection_states = ConnectionStates0 Connection) -> ConnectionStates1 = ssl_record:set_client_verify_data(current_read, Data, ConnectionStates0), - State1 = + {State1, Actions} = finalize_handshake(State0#state{connection_states = ConnectionStates1, session = Session}, cipher, Connection), {Record, State} = prepare_connection(State1, Connection), - Connection:next_event(connection, Record, State). + Connection:next_event(connection, Record, State, Actions). is_anonymous(Algo) when Algo == dh_anon; Algo == ecdh_anon; @@ -2296,7 +2324,7 @@ format_reply(_, _,#socket_options{active = false, mode = Mode, packet = Packet, {ok, do_format_reply(Mode, Packet, Header, Data)}; format_reply(Transport, Socket, #socket_options{active = _, mode = Mode, packet = Packet, header = Header}, Data, Tracker, Connection) -> - {ssl, tls_socket:socket(self(), Transport, Socket, Connection, Tracker), + {ssl, Connection:socket(self(), Transport, Socket, Connection, Tracker), do_format_reply(Mode, Packet, Header, Data)}. deliver_packet_error(Transport, Socket, SO= #socket_options{active = Active}, Data, Pid, From, Tracker, Connection) -> @@ -2305,7 +2333,7 @@ deliver_packet_error(Transport, Socket, SO= #socket_options{active = Active}, Da format_packet_error(_, _,#socket_options{active = false, mode = Mode}, Data, _, _) -> {error, {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}; format_packet_error(Transport, Socket, #socket_options{active = _, mode = Mode}, Data, Tracker, Connection) -> - {ssl_error, tls_socket:socket(self(), Transport, Socket, Connection, Tracker), + {ssl_error, Connection:socket(self(), Transport, Socket, Connection, Tracker), {invalid_packet, do_format_reply(Mode, raw, 0, Data)}}. do_format_reply(binary, _, N, Data) when N > 0 -> % Header mode @@ -2360,11 +2388,11 @@ alert_user(Transport, Tracker, Socket, Active, Pid, From, Alert, Role, Connectio case ssl_alert:reason_code(Alert, Role) of closed -> send_or_reply(Active, Pid, From, - {ssl_closed, tls_socket:socket(self(), + {ssl_closed, Connection:socket(self(), Transport, Socket, Connection, Tracker)}); ReasonCode -> send_or_reply(Active, Pid, From, - {ssl_error, tls_socket:socket(self(), + {ssl_error, Connection:socket(self(), Transport, Socket, Connection, Tracker), ReasonCode}) end. @@ -2425,16 +2453,23 @@ handle_sni_extension(#sni{hostname = Hostname}, State0) -> undefined -> State0; _ -> - {ok, Ref, CertDbHandle, FileRefHandle, CacheHandle, CRLDbHandle, OwnCert, Key, DHParams} = - ssl_config:init(NewOptions, State0#state.role), - State0#state{ - session = State0#state.session#session{own_certificate = OwnCert}, - file_ref_db = FileRefHandle, - cert_db_ref = Ref, - cert_db = CertDbHandle, - crl_db = CRLDbHandle, - session_cache = CacheHandle, - private_key = Key, + {ok, #{cert_db_ref := Ref, + cert_db_handle := CertDbHandle, + fileref_db_handle := FileRefHandle, + session_cache := CacheHandle, + crl_db_info := CRLDbHandle, + private_key := Key, + dh_params := DHParams, + own_certificate := OwnCert}} = + ssl_config:init(NewOptions, State0#state.role), + State0#state{ + session = State0#state.session#session{own_certificate = OwnCert}, + file_ref_db = FileRefHandle, + cert_db_ref = Ref, + cert_db = CertDbHandle, + crl_db = CRLDbHandle, + session_cache = CacheHandle, + private_key = Key, diffie_hellman_params = DHParams, ssl_options = NewOptions, sni_hostname = Hostname @@ -2456,3 +2491,8 @@ update_ssl_options_from_sni(OrigSSLOptions, SNIHostname) -> _ -> ssl:handle_options(SSLOption, OrigSSLOptions) end. + +new_emulated([], EmOpts) -> + EmOpts; +new_emulated(NewEmOpts, _) -> + NewEmOpts. |