aboutsummaryrefslogtreecommitdiffstats
path: root/lib
diff options
context:
space:
mode:
Diffstat (limited to 'lib')
-rw-r--r--lib/ssh/src/ssh_transport.erl12
-rw-r--r--lib/ssh/test/ssh_options_SUITE.erl23
-rw-r--r--lib/ssl/doc/src/notes.xml54
-rw-r--r--lib/ssl/src/dtls_connection.erl1
-rw-r--r--lib/ssl/src/ssl.appup.src2
-rw-r--r--lib/ssl/src/ssl_connection.erl21
-rw-r--r--lib/ssl/src/ssl_connection.hrl1
-rw-r--r--lib/ssl/src/tls_connection.erl1
-rw-r--r--lib/ssl/vsn.mk2
9 files changed, 103 insertions, 14 deletions
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 9bebaf2d9b..61a1a57063 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -1827,12 +1827,6 @@ same(Algs) -> [{client2server,Algs}, {server2client,Algs}].
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
trim_tail(Str) ->
- lists:reverse(trim_head(lists:reverse(Str))).
-
-trim_head([$\s|Cs]) -> trim_head(Cs);
-trim_head([$\t|Cs]) -> trim_head(Cs);
-trim_head([$\n|Cs]) -> trim_head(Cs);
-trim_head([$\r|Cs]) -> trim_head(Cs);
-trim_head(Cs) -> Cs.
-
-
+ lists:takewhile(fun(C) ->
+ C=/=$\r andalso C=/=$\n
+ end, Str).
diff --git a/lib/ssh/test/ssh_options_SUITE.erl b/lib/ssh/test/ssh_options_SUITE.erl
index eedb2b389d..aefd31834a 100644
--- a/lib/ssh/test/ssh_options_SUITE.erl
+++ b/lib/ssh/test/ssh_options_SUITE.erl
@@ -36,7 +36,9 @@
id_string_no_opt_client/1,
id_string_no_opt_server/1,
id_string_own_string_client/1,
+ id_string_own_string_client_trail_space/1,
id_string_own_string_server/1,
+ id_string_own_string_server_trail_space/1,
id_string_random_client/1,
id_string_random_server/1,
max_sessions_sftp_start_channel_parallel/1,
@@ -116,9 +118,11 @@ all() ->
hostkey_fingerprint_check_list,
id_string_no_opt_client,
id_string_own_string_client,
+ id_string_own_string_client_trail_space,
id_string_random_client,
id_string_no_opt_server,
id_string_own_string_server,
+ id_string_own_string_server_trail_space,
id_string_random_server,
{group, hardening_tests}
].
@@ -1034,6 +1038,19 @@ id_string_own_string_client(Config) ->
end.
%%--------------------------------------------------------------------
+id_string_own_string_client_trail_space(Config) ->
+ {Server, _Host, Port} = fake_daemon(Config),
+ {error,_} = ssh:connect("localhost", Port, [{id_string,"Pelle "}], 1000),
+ receive
+ {id,Server,"SSH-2.0-Pelle \r\n"} ->
+ ok;
+ {id,Server,Other} ->
+ ct:fail("Unexpected id: ~s.",[Other])
+ after 5000 ->
+ {fail,timeout}
+ end.
+
+%%--------------------------------------------------------------------
id_string_random_client(Config) ->
{Server, _Host, Port} = fake_daemon(Config),
{error,_} = ssh:connect("localhost", Port, [{id_string,random}], 1000),
@@ -1062,6 +1079,12 @@ id_string_own_string_server(Config) ->
{ok,"SSH-2.0-Olle\r\n"} = gen_tcp:recv(S1, 0, 2000).
%%--------------------------------------------------------------------
+id_string_own_string_server_trail_space(Config) ->
+ {_Server, Host, Port} = ssh_test_lib:std_daemon(Config, [{id_string,"Olle "}]),
+ {ok,S1}=gen_tcp:connect(Host,Port,[{active,false},{packet,line}]),
+ {ok,"SSH-2.0-Olle \r\n"} = gen_tcp:recv(S1, 0, 2000).
+
+%%--------------------------------------------------------------------
id_string_random_server(Config) ->
{_Server, Host, Port} = ssh_test_lib:std_daemon(Config, [{id_string,random}]),
{ok,S1}=gen_tcp:connect(Host,Port,[{active,false},{packet,line}]),
diff --git a/lib/ssl/doc/src/notes.xml b/lib/ssl/doc/src/notes.xml
index d13ad09470..d37a180f54 100644
--- a/lib/ssl/doc/src/notes.xml
+++ b/lib/ssl/doc/src/notes.xml
@@ -28,6 +28,60 @@
<p>This document describes the changes made to the SSL application.</p>
+<section><title>SSL 8.1.3.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p> An erlang TLS server configured with cipher suites
+ using rsa key exchange, may be vulnerable to an Adaptive
+ Chosen Ciphertext attack (AKA Bleichenbacher attack)
+ against RSA, which when exploited, may result in
+ plaintext recovery of encrypted messages and/or a
+ Man-in-the-middle (MiTM) attack, despite the attacker not
+ having gained access to the server’s private key
+ itself. <url
+ href="https://nvd.nist.gov/vuln/detail/CVE-2017-1000385">CVE-2017-1000385</url>
+ </p> <p> Exploiting this vulnerability to perform
+ plaintext recovery of encrypted messages will, in most
+ practical cases, allow an attacker to read the plaintext
+ only after the session has completed. Only TLS sessions
+ established using RSA key exchange are vulnerable to this
+ attack. </p> <p> Exploiting this vulnerability to conduct
+ a MiTM attack requires the attacker to complete the
+ initial attack, which may require thousands of server
+ requests, during the handshake phase of the targeted
+ session within the window of the configured handshake
+ timeout. This attack may be conducted against any TLS
+ session using RSA signatures, but only if cipher suites
+ using RSA key exchange are also enabled on the server.
+ The limited window of opportunity, limitations in
+ bandwidth, and latency make this attack significantly
+ more difficult to execute. </p> <p> RSA key exchange is
+ enabled by default although least prioritized if server
+ order is honored. For such a cipher suite to be chosen it
+ must also be supported by the client and probably the
+ only shared cipher suite. </p> <p> Captured TLS sessions
+ encrypted with ephemeral cipher suites (DHE or ECDHE) are
+ not at risk for subsequent decryption due to this
+ vulnerability. </p> <p> As a workaround if default cipher
+ suite configuration was used you can configure the server
+ to not use vulnerable suites with the ciphers option like
+ this: </p> <c> {ciphers, [Suite || Suite &lt;-
+ ssl:cipher_suites(), element(1,Suite) =/= rsa]} </c> <p>
+ that is your code will look somethingh like this: </p>
+ <c> ssl:listen(Port, [{ciphers, [Suite || Suite &lt;-
+ ssl:cipher_suites(), element(1,S) =/= rsa]} | Options]).
+ </c> <p> Thanks to Hanno Böck, Juraj Somorovsky and
+ Craig Young for reporting this vulnerability. </p>
+ <p>
+ Own Id: OTP-14748</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>SSL 8.1.3</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/ssl/src/dtls_connection.erl b/lib/ssl/src/dtls_connection.erl
index 745db788e7..130a8bb1c5 100644
--- a/lib/ssl/src/dtls_connection.erl
+++ b/lib/ssl/src/dtls_connection.erl
@@ -575,6 +575,7 @@ handle_client_hello(#client_hello{client_version = ClientVersion} = Hello,
State = prepare_flight(State0#state{connection_states = ConnectionStates,
negotiated_version = Version,
+ client_hello_version = ClientVersion,
hashsign_algorithm = HashSign,
session = Session,
negotiated_protocol = Protocol}),
diff --git a/lib/ssl/src/ssl.appup.src b/lib/ssl/src/ssl.appup.src
index 2eda9d9491..bfdd0c205b 100644
--- a/lib/ssl/src/ssl.appup.src
+++ b/lib/ssl/src/ssl.appup.src
@@ -1,7 +1,6 @@
%% -*- erlang -*-
{"%VSN%",
[
- {<<"8.1.1">>, [{load_module, tls_connection, soft_purge, soft_purge, []}]},
{<<"8\\..*">>, [{restart_application, ssl}]},
{<<"7\\..*">>, [{restart_application, ssl}]},
{<<"6\\..*">>, [{restart_application, ssl}]},
@@ -10,7 +9,6 @@
{<<"3\\..*">>, [{restart_application, ssl}]}
],
[
- {<<"8.1.1">>, [{load_module, tls_connection, soft_purge, soft_purge, []}]},
{<<"8\\..*">>, [{restart_application, ssl}]},
{<<"7\\..*">>, [{restart_application, ssl}]},
{<<"6\\..*">>, [{restart_application, ssl}]},
diff --git a/lib/ssl/src/ssl_connection.erl b/lib/ssl/src/ssl_connection.erl
index ad220ae9de..0e51106bfb 100644
--- a/lib/ssl/src/ssl_connection.erl
+++ b/lib/ssl/src/ssl_connection.erl
@@ -1367,8 +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},
diff --git a/lib/ssl/src/ssl_connection.hrl b/lib/ssl/src/ssl_connection.hrl
index b597c059af..016cc4b525 100644
--- a/lib/ssl/src/ssl_connection.hrl
+++ b/lib/ssl/src/ssl_connection.hrl
@@ -57,6 +57,7 @@
session_cache_cb :: atom(),
crl_db :: term(),
negotiated_version :: ssl_record:ssl_version() | 'undefined',
+ client_hello_version :: ssl_record:ssl_version() | 'undefined',
client_certificate_requested = false :: boolean(),
key_algorithm :: ssl_cipher:key_algo(),
hashsign_algorithm = {undefined, undefined},
diff --git a/lib/ssl/src/tls_connection.erl b/lib/ssl/src/tls_connection.erl
index 831bbefc59..b18c69c740 100644
--- a/lib/ssl/src/tls_connection.erl
+++ b/lib/ssl/src/tls_connection.erl
@@ -280,6 +280,7 @@ hello(internal, #client_hello{client_version = ClientVersion} = Hello,
gen_handshake(ssl_connection, hello, internal, {common_client_hello, Type, ServerHelloExt},
State#state{connection_states = ConnectionStates,
negotiated_version = Version,
+ client_hello_version = ClientVersion,
hashsign_algorithm = HashSign,
session = Session,
negotiated_protocol = Protocol})
diff --git a/lib/ssl/vsn.mk b/lib/ssl/vsn.mk
index 7c2d9bec48..1743a61cb7 100644
--- a/lib/ssl/vsn.mk
+++ b/lib/ssl/vsn.mk
@@ -1 +1 @@
-SSL_VSN = 8.1.3
+SSL_VSN = 8.1.3.1
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 16:47:47 +0000