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-rw-r--r--lib/ssh/doc/src/notes.xml72
-rw-r--r--lib/ssh/src/ssh.app.src2
-rw-r--r--lib/ssh/src/ssh.hrl2
-rw-r--r--lib/ssh/src/ssh_connection_handler.erl6
-rw-r--r--lib/ssh/src/ssh_transport.erl137
-rw-r--r--lib/ssh/src/sshc_sup.erl4
-rw-r--r--lib/ssh/test/ssh_options_SUITE.erl23
-rw-r--r--lib/ssh/test/ssh_sup_SUITE.erl8
-rw-r--r--lib/ssh/vsn.mk2
9 files changed, 210 insertions, 46 deletions
diff --git a/lib/ssh/doc/src/notes.xml b/lib/ssh/doc/src/notes.xml
index 00a8bceb4a..39bfd35f74 100644
--- a/lib/ssh/doc/src/notes.xml
+++ b/lib/ssh/doc/src/notes.xml
@@ -30,6 +30,78 @@
<file>notes.xml</file>
</header>
+<section><title>Ssh 4.2.2.4</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Trailing white space was removed at end of the
+ hello-string. This caused interoperability problems with
+ some other ssh-implementations (e.g OpenSSH 7.3p1 on
+ Solaris 11)</p>
+ <p>
+ Own Id: OTP-14763 Aux Id: ERIERL-74 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Ssh 4.2.2.3</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ The key exchange algorithm
+ diffie-hellman-group-exchange-sha* has a server-option
+ <c>{dh_gex_limits,{Min,Max}}</c>. There was a hostkey
+ signature validation error on the client side if the
+ option was used and the <c>Min</c> or the <c>Max</c>
+ differed from the corresponding values obtained from the
+ client.</p>
+ <p>
+ This bug is now corrected.</p>
+ <p>
+ Own Id: OTP-14166</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Key exchange algorithms
+ diffie-hellman-group-exchange-sha* optimized, up to a
+ factor of 11 for the slowest ( = biggest and safest) one.</p>
+ <p>
+ Own Id: OTP-14169 Aux Id: seq-13261 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
+<section><title>Ssh 4.2.2.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Upgrade of an established client connection could crash
+ because the ssh client supervisors children had wrong
+ type. This is fixed now.</p>
+ <p>
+ Own Id: OTP-13782 Aux Id: seq13158 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Ssh 4.2.2.1</title>
<section><title>Fixed Bugs and Malfunctions</title>
diff --git a/lib/ssh/src/ssh.app.src b/lib/ssh/src/ssh.app.src
index 4a76fd9cd3..cb0f087cfb 100644
--- a/lib/ssh/src/ssh.app.src
+++ b/lib/ssh/src/ssh.app.src
@@ -40,6 +40,6 @@
{env, []},
{mod, {ssh_app, []}},
{runtime_dependencies, ["stdlib-2.3","public_key-0.22","kernel-3.0",
- "erts-6.0","crypto-3.3"]}]}.
+ "erts-6.0","crypto-3.6.3.1"]}]}.
diff --git a/lib/ssh/src/ssh.hrl b/lib/ssh/src/ssh.hrl
index f88098819d..b27e91213d 100644
--- a/lib/ssh/src/ssh.hrl
+++ b/lib/ssh/src/ssh.hrl
@@ -60,8 +60,8 @@
-define(uint16(X), << ?UINT16(X) >> ).
-define(uint32(X), << ?UINT32(X) >> ).
-define(uint64(X), << ?UINT64(X) >> ).
--define(string(X), << ?STRING(list_to_binary(X)) >> ).
-define(string_utf8(X), << ?STRING(unicode:characters_to_binary(X)) >> ).
+-define(string(X), ?string_utf8(X)).
-define(binary(X), << ?STRING(X) >>).
-define(SSH_CIPHER_NONE, 0).
diff --git a/lib/ssh/src/ssh_connection_handler.erl b/lib/ssh/src/ssh_connection_handler.erl
index b73f8b23d2..8c73bb8946 100644
--- a/lib/ssh/src/ssh_connection_handler.erl
+++ b/lib/ssh/src/ssh_connection_handler.erl
@@ -429,14 +429,16 @@ key_exchange(#ssh_msg_kexdh_reply{} = Msg,
key_exchange(#ssh_msg_kex_dh_gex_request{} = Msg,
#state{ssh_params = #ssh{role = server} = Ssh0} = State) ->
- {ok, GexGroup, Ssh} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0),
+ {ok, GexGroup, Ssh1} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0),
send_msg(GexGroup, State),
+ Ssh = ssh_transport:parallell_gen_key(Ssh1),
{next_state, key_exchange_dh_gex_init, next_packet(State#state{ssh_params = Ssh})};
key_exchange(#ssh_msg_kex_dh_gex_request_old{} = Msg,
#state{ssh_params = #ssh{role = server} = Ssh0} = State) ->
- {ok, GexGroup, Ssh} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0),
+ {ok, GexGroup, Ssh1} = ssh_transport:handle_kex_dh_gex_request(Msg, Ssh0),
send_msg(GexGroup, State),
+ Ssh = ssh_transport:parallell_gen_key(Ssh1),
{next_state, key_exchange_dh_gex_init, next_packet(State#state{ssh_params = Ssh})};
key_exchange(#ssh_msg_kex_dh_gex_group{} = Msg,
diff --git a/lib/ssh/src/ssh_transport.erl b/lib/ssh/src/ssh_transport.erl
index 18037b8461..b2d655955f 100644
--- a/lib/ssh/src/ssh_transport.erl
+++ b/lib/ssh/src/ssh_transport.erl
@@ -44,6 +44,7 @@
handle_kexdh_reply/2,
handle_kex_ecdh_init/2,
handle_kex_ecdh_reply/2,
+ parallell_gen_key/1,
extract_public_key/1,
ssh_packet/2, pack/2,
sign/3, verify/4]).
@@ -287,9 +288,6 @@ handle_kexinit_msg(#ssh_msg_kexinit{} = CounterPart, #ssh_msg_kexinit{} = Own,
end.
-%% TODO: diffie-hellman-group14-sha1 should also be supported.
-%% Maybe check more things ...
-
verify_algorithm(#alg{kex = undefined}) -> false;
verify_algorithm(#alg{hkey = undefined}) -> false;
verify_algorithm(#alg{send_mac = undefined}) -> false;
@@ -307,17 +305,29 @@ verify_algorithm(#alg{kex = Kex}) -> lists:member(Kex, supported_algorithms(kex)
key_exchange_first_msg(Kex, Ssh0) when Kex == 'diffie-hellman-group1-sha1' ;
Kex == 'diffie-hellman-group14-sha1' ->
{G, P} = dh_group(Kex),
- {Public, Private} = generate_key(dh, [P,G]),
+ Sz = dh_bits(Ssh0#ssh.algorithms),
+ {Public, Private} = generate_key(dh, [P,G,2*Sz]),
{SshPacket, Ssh1} = ssh_packet(#ssh_msg_kexdh_init{e = Public}, Ssh0),
{ok, SshPacket,
Ssh1#ssh{keyex_key = {{Private, Public}, {G, P}}}};
key_exchange_first_msg(Kex, Ssh0=#ssh{opts=Opts}) when Kex == 'diffie-hellman-group-exchange-sha1' ;
Kex == 'diffie-hellman-group-exchange-sha256' ->
- {Min,NBits,Max} =
+ {Min,NBits0,Max} =
proplists:get_value(dh_gex_limits, Opts, {?DEFAULT_DH_GROUP_MIN,
?DEFAULT_DH_GROUP_NBITS,
?DEFAULT_DH_GROUP_MAX}),
+ DhBits = dh_bits(Ssh0#ssh.algorithms),
+ NBits1 =
+ %% NIST Special Publication 800-57 Part 1 Revision 4: Recommendation for Key Management
+ if
+ DhBits =< 112 -> 2048;
+ DhBits =< 128 -> 3072;
+ DhBits =< 192 -> 7680;
+ true -> 8192
+ end,
+ NBits = min(max(max(NBits0,NBits1),Min), Max),
+
{SshPacket, Ssh1} =
ssh_packet(#ssh_msg_kex_dh_gex_request{min = Min,
n = NBits,
@@ -341,12 +351,13 @@ key_exchange_first_msg(Kex, Ssh0) when Kex == 'ecdh-sha2-nistp256' ;
%%% diffie-hellman-group14-sha1
%%%
handle_kexdh_init(#ssh_msg_kexdh_init{e = E},
- Ssh0 = #ssh{algorithms = #alg{kex=Kex}}) ->
+ Ssh0 = #ssh{algorithms = #alg{kex=Kex} = Algs}) ->
%% server
{G, P} = dh_group(Kex),
if
1=<E, E=<(P-1) ->
- {Public, Private} = generate_key(dh, [P,G]),
+ Sz = dh_bits(Algs),
+ {Public, Private} = generate_key(dh, [P,G,2*Sz]),
K = compute_key(dh, E, Private, [P,G]),
MyPrivHostKey = get_host_key(Ssh0),
MyPubHostKey = extract_public_key(MyPrivHostKey),
@@ -418,13 +429,12 @@ handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request{min = Min0,
{Min, Max} = adjust_gex_min_max(Min0, Max0, Opts),
case public_key:dh_gex_group(Min, NBits, Max,
proplists:get_value(dh_gex_groups,Opts)) of
- {ok, {_Sz, {G,P}}} ->
- {Public, Private} = generate_key(dh, [P,G]),
+ {ok, {_, {G,P}}} ->
{SshPacket, Ssh} =
ssh_packet(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0),
{ok, SshPacket,
- Ssh#ssh{keyex_key = {{Private, Public}, {G, P}},
- keyex_info = {Min, Max, NBits}
+ Ssh#ssh{keyex_key = {x, {G, P}},
+ keyex_info = {Min0, Max0, NBits}
}};
{error,_} ->
throw(#ssh_msg_disconnect{
@@ -452,12 +462,11 @@ handle_kex_dh_gex_request(#ssh_msg_kex_dh_gex_request_old{n = NBits},
{Min, Max} = adjust_gex_min_max(Min0, Max0, Opts),
case public_key:dh_gex_group(Min, NBits, Max,
proplists:get_value(dh_gex_groups,Opts)) of
- {ok, {_Sz, {G,P}}} ->
- {Public, Private} = generate_key(dh, [P,G]),
+ {ok, {_, {G,P}}} ->
{SshPacket, Ssh} =
ssh_packet(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0),
{ok, SshPacket,
- Ssh#ssh{keyex_key = {{Private, Public}, {G, P}},
+ Ssh#ssh{keyex_key = {x, {G, P}},
keyex_info = {-1, -1, NBits} % flag for kex_h hash calc
}};
{error,_} ->
@@ -497,7 +506,8 @@ adjust_gex_min_max(Min0, Max0, Opts) ->
handle_kex_dh_gex_group(#ssh_msg_kex_dh_gex_group{p = P, g = G}, Ssh0) ->
%% client
- {Public, Private} = generate_key(dh, [P,G]),
+ Sz = dh_bits(Ssh0#ssh.algorithms),
+ {Public, Private} = generate_key(dh, [P,G,2*Sz]),
{SshPacket, Ssh1} =
ssh_packet(#ssh_msg_kex_dh_gex_init{e = Public}, Ssh0), % Pub = G^Priv mod P (def)
@@ -1108,6 +1118,51 @@ verify(PlainText, Hash, Sig, Key) ->
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%% Unit: bytes
+
+-record(cipher_data, {
+ key_bytes,
+ iv_bytes,
+ block_bytes
+ }).
+
+%%% Start of a more parameterized crypto handling.
+cipher('AEAD_AES_128_GCM') ->
+ #cipher_data{key_bytes = 16,
+ iv_bytes = 12,
+ block_bytes = 16};
+
+cipher('AEAD_AES_256_GCM') ->
+ #cipher_data{key_bytes = 32,
+ iv_bytes = 12,
+ block_bytes = 16};
+
+cipher('3des-cbc') ->
+ #cipher_data{key_bytes = 24,
+ iv_bytes = 8,
+ block_bytes = 8};
+
+cipher('aes128-cbc') ->
+ #cipher_data{key_bytes = 16,
+ iv_bytes = 16,
+ block_bytes = 16};
+
+cipher('aes128-ctr') ->
+ #cipher_data{key_bytes = 16,
+ iv_bytes = 16,
+ block_bytes = 16};
+
+cipher('aes192-ctr') ->
+ #cipher_data{key_bytes = 24,
+ iv_bytes = 16,
+ block_bytes = 16};
+
+cipher('aes256-ctr') ->
+ #cipher_data{key_bytes = 32,
+ iv_bytes = 16,
+ block_bytes = 16}.
+
+
encrypt_init(#ssh{encrypt = none} = Ssh) ->
{ok, Ssh};
encrypt_init(#ssh{encrypt = 'AEAD_AES_128_GCM', role = client} = Ssh) ->
@@ -1488,11 +1543,11 @@ send_mac_init(SSH) ->
common ->
case SSH#ssh.role of
client ->
- KeySize = mac_key_size(SSH#ssh.send_mac),
+ KeySize = 8*mac_key_bytes(SSH#ssh.send_mac),
Key = hash(SSH, "E", KeySize),
{ok, SSH#ssh { send_mac_key = Key }};
server ->
- KeySize = mac_key_size(SSH#ssh.send_mac),
+ KeySize = 8*mac_key_bytes(SSH#ssh.send_mac),
Key = hash(SSH, "F", KeySize),
{ok, SSH#ssh { send_mac_key = Key }}
end;
@@ -1511,10 +1566,10 @@ recv_mac_init(SSH) ->
common ->
case SSH#ssh.role of
client ->
- Key = hash(SSH, "F", mac_key_size(SSH#ssh.recv_mac)),
+ Key = hash(SSH, "F", 8*mac_key_bytes(SSH#ssh.recv_mac)),
{ok, SSH#ssh { recv_mac_key = Key }};
server ->
- Key = hash(SSH, "E", mac_key_size(SSH#ssh.recv_mac)),
+ Key = hash(SSH, "E", 8*mac_key_bytes(SSH#ssh.recv_mac)),
{ok, SSH#ssh { recv_mac_key = Key }}
end;
aead ->
@@ -1638,13 +1693,15 @@ sha(?'secp384r1') -> sha(secp384r1);
sha(?'secp521r1') -> sha(secp521r1).
-mac_key_size('hmac-sha1') -> 20*8;
-mac_key_size('hmac-sha1-96') -> 20*8;
-mac_key_size('hmac-md5') -> 16*8;
-mac_key_size('hmac-md5-96') -> 16*8;
-mac_key_size('hmac-sha2-256')-> 32*8;
-mac_key_size('hmac-sha2-512')-> 512;
-mac_key_size(none) -> 0.
+mac_key_bytes('hmac-sha1') -> 20;
+mac_key_bytes('hmac-sha1-96') -> 20;
+mac_key_bytes('hmac-md5') -> 16;
+mac_key_bytes('hmac-md5-96') -> 16;
+mac_key_bytes('hmac-sha2-256')-> 32;
+mac_key_bytes('hmac-sha2-512')-> 64;
+mac_key_bytes('AEAD_AES_128_GCM') -> 0;
+mac_key_bytes('AEAD_AES_256_GCM') -> 0;
+mac_key_bytes(none) -> 0.
mac_digest_size('hmac-sha1') -> 20;
mac_digest_size('hmac-sha1-96') -> 12;
@@ -1669,6 +1726,13 @@ dh_group('diffie-hellman-group1-sha1') -> ?dh_group1;
dh_group('diffie-hellman-group14-sha1') -> ?dh_group14.
%%%----------------------------------------------------------------
+parallell_gen_key(Ssh = #ssh{keyex_key = {x, {G, P}},
+ algorithms = Algs}) ->
+ Sz = dh_bits(Algs),
+ {Public, Private} = generate_key(dh, [P,G,2*Sz]),
+ Ssh#ssh{keyex_key = {{Private, Public}, {G, P}}}.
+
+
generate_key(Algorithm, Args) ->
{Public,Private} = crypto:generate_key(Algorithm, Args),
{crypto:bytes_to_integer(Public), crypto:bytes_to_integer(Private)}.
@@ -1679,6 +1743,15 @@ compute_key(Algorithm, OthersPublic, MyPrivate, Args) ->
crypto:bytes_to_integer(Shared).
+dh_bits(#alg{encrypt = Encrypt,
+ send_mac = SendMac}) ->
+ C = cipher(Encrypt),
+ 8 * lists:max([C#cipher_data.key_bytes,
+ C#cipher_data.block_bytes,
+ C#cipher_data.iv_bytes,
+ mac_key_bytes(SendMac)
+ ]).
+
ecdh_curve('ecdh-sha2-nistp256') -> secp256r1;
ecdh_curve('ecdh-sha2-nistp384') -> secp384r1;
ecdh_curve('ecdh-sha2-nistp521') -> secp521r1.
@@ -1752,12 +1825,6 @@ 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/src/sshc_sup.erl b/lib/ssh/src/sshc_sup.erl
index 8ee6aacfb5..b8275ba1eb 100644
--- a/lib/ssh/src/sshc_sup.erl
+++ b/lib/ssh/src/sshc_sup.erl
@@ -64,7 +64,7 @@ child_spec(_) ->
Name = undefined, % As simple_one_for_one is used.
StartFunc = {ssh_connection_handler, start_link, []},
Restart = temporary,
- Shutdown = infinity,
+ Shutdown = 4000,
Modules = [ssh_connection_handler],
- Type = supervisor,
+ Type = worker,
{Name, StartFunc, Restart, Shutdown, Type, Modules}.
diff --git a/lib/ssh/test/ssh_options_SUITE.erl b/lib/ssh/test/ssh_options_SUITE.erl
index ba0107efd6..2d9f740f82 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,
@@ -102,9 +104,11 @@ all() ->
unexpectedfun_option_client,
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}
].
@@ -912,6 +916,19 @@ 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),
@@ -940,6 +957,12 @@ 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/ssh/test/ssh_sup_SUITE.erl b/lib/ssh/test/ssh_sup_SUITE.erl
index 18e91a9af3..98441e0046 100644
--- a/lib/ssh/test/ssh_sup_SUITE.erl
+++ b/lib/ssh/test/ssh_sup_SUITE.erl
@@ -105,16 +105,16 @@ sshc_subtree(Config) when is_list(Config) ->
{ok, Pid1} = ssh:connect(Host, Port, [{silently_accept_hosts, true},
{user_interaction, false},
{user, ?USER}, {password, ?PASSWD},{user_dir, UserDir}]),
- [{_, _,supervisor,[ssh_connection_handler]}] =
+ [{_, _,worker,[ssh_connection_handler]}] =
supervisor:which_children(sshc_sup),
{ok, Pid2} = ssh:connect(Host, Port, [{silently_accept_hosts, true},
{user_interaction, false},
{user, ?USER}, {password, ?PASSWD}, {user_dir, UserDir}]),
- [{_,_,supervisor,[ssh_connection_handler]},
- {_,_,supervisor,[ssh_connection_handler]}] =
+ [{_,_,worker,[ssh_connection_handler]},
+ {_,_,worker,[ssh_connection_handler]}] =
supervisor:which_children(sshc_sup),
ssh:close(Pid1),
- [{_,_,supervisor,[ssh_connection_handler]}] =
+ [{_,_,worker,[ssh_connection_handler]}] =
supervisor:which_children(sshc_sup),
ssh:close(Pid2),
ct:sleep(?WAIT_FOR_SHUTDOWN),
diff --git a/lib/ssh/vsn.mk b/lib/ssh/vsn.mk
index dc5e7092f8..e20067bdde 100644
--- a/lib/ssh/vsn.mk
+++ b/lib/ssh/vsn.mk
@@ -1,5 +1,5 @@
#-*-makefile-*- ; force emacs to enter makefile-mode
-SSH_VSN = 4.2.2.1
+SSH_VSN = 4.2.2.4
APP_VSN = "ssh-$(SSH_VSN)"
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 05:07:01 +0000