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authorIngela Anderton Andin <[email protected]>2011-11-17 17:45:06 +0100
committerIngela Anderton Andin <[email protected]>2011-11-21 11:58:12 +0100
commitdb344ed61fa2deeda99600e9a259498b361305db (patch)
tree3b216120c7b2c44f1e73144f0c0d97081fd149a5 /lib/ssl/test/ssl_basic_SUITE.erl
parent0d3fa967fda3a3d4b302f7b89887cf034d245a47 (diff)
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Mitigate Computational DoS attack
Diffstat (limited to 'lib/ssl/test/ssl_basic_SUITE.erl')
-rw-r--r--lib/ssl/test/ssl_basic_SUITE.erl49
1 files changed, 48 insertions, 1 deletions
diff --git a/lib/ssl/test/ssl_basic_SUITE.erl b/lib/ssl/test/ssl_basic_SUITE.erl
index d9cb8002ed..fc8aafa426 100644
--- a/lib/ssl/test/ssl_basic_SUITE.erl
+++ b/lib/ssl/test/ssl_basic_SUITE.erl
@@ -36,6 +36,7 @@
-define(LONG_TIMEOUT, 600000).
-define(EXPIRE, 10).
-define(SLEEP, 500).
+-define(RENEGOTIATION_DISABLE_TIME, 12000).
%% Test server callback functions
%%--------------------------------------------------------------------
@@ -256,7 +257,7 @@ all() ->
%%different_ca_peer_sign,
no_reuses_session_server_restart_new_cert,
no_reuses_session_server_restart_new_cert_file, reuseaddr,
- hibernate, connect_twice
+ hibernate, connect_twice, renegotiate_dos_mitigate
].
groups() ->
@@ -3647,7 +3648,40 @@ connect_twice(Config) when is_list(Config) ->
ssl_test_lib:close(Client),
ssl_test_lib:close(Client1).
+%%--------------------------------------------------------------------
+renegotiate_dos_mitigate(doc) ->
+ ["Mitigate DOS computational attack by not allowing client to renegotiate many times in a row",
+ "immediately after each other"];
+
+renegotiate_dos_mitigate(suite) ->
+ [];
+
+renegotiate_dos_mitigate(Config) when is_list(Config) ->
+ ServerOpts = ?config(server_opts, Config),
+ ClientOpts = ?config(client_opts, Config),
+
+ {ClientNode, ServerNode, Hostname} = ssl_test_lib:run_where(Config),
+
+ Server =
+ ssl_test_lib:start_server([{node, ServerNode}, {port, 0},
+ {from, self()},
+ {mfa, {?MODULE, send_recv_result_active, []}},
+ {options, [ServerOpts]}]),
+ Port = ssl_test_lib:inet_port(Server),
+
+ Client = ssl_test_lib:start_client([{node, ClientNode}, {port, Port},
+ {host, Hostname},
+ {from, self()},
+ {mfa, {?MODULE,
+ renegotiate_immediately, []}},
+ {options, ClientOpts}]),
+
+ ssl_test_lib:check_result(Client, ok, Server, ok),
+ ssl_test_lib:close(Server),
+ ssl_test_lib:close(Client).
+
+
%%--------------------------------------------------------------------
%%% Internal functions
%%--------------------------------------------------------------------
@@ -3690,6 +3724,19 @@ renegotiate_reuse_session(Socket, Data) ->
test_server:sleep(?SLEEP),
renegotiate(Socket, Data).
+renegotiate_immediately(Socket) ->
+ receive
+ {ssl, Socket, "Hello world"} ->
+ ok
+ end,
+ ok = ssl:renegotiate(Socket),
+ {error, renegotiation_rejected} = ssl:renegotiate(Socket),
+ test_server:sleep(?RENEGOTIATION_DISABLE_TIME +1),
+ ok = ssl:renegotiate(Socket),
+ test_server:format("Renegotiated again"),
+ ssl:send(Socket, "Hello world"),
+ ok.
+
new_config(PrivDir, ServerOpts0) ->
CaCertFile = proplists:get_value(cacertfile, ServerOpts0),
CertFile = proplists:get_value(certfile, ServerOpts0),