fix: password log leak in RabbitMQ bridge

This fixes a vulnerability in the RabbitMQ bridge, which could
potentially expose passwords to log files. This was accomplished by
initializing the encryption library specifically designed for RabbitMQ's
passwords. Consequently, passwords are no longer stored in unencrypted
format. As a result, they will no longer be visible as plain text in log
messages, thereby enhancing the system's security.

Fixes:
https://emqx.atlassian.net/browse/EMQX-9976

apps/emqx_bridge_rabbitmq/src/emqx_bridge_rabbitmq.app.src

@@ -1,6 +1,6 @@
 {application, emqx_bridge_rabbitmq, [
     {description, "EMQX Enterprise RabbitMQ Bridge"},
-    {vsn, "0.1.1"},
+    {vsn, "0.1.2"},
     {registered, []},
     {applications, [kernel, stdlib, ecql, rabbit_common, amqp_client]},
     {env, []},

apps/emqx_bridge_rabbitmq/src/emqx_bridge_rabbitmq_connector.erl

@@ -13,6 +13,7 @@
 
 %% Needed to create RabbitMQ connection
 -include_lib("amqp_client/include/amqp_client.hrl").
+-include_lib("credentials_obfuscation/include/credentials_obfuscation.hrl").
 
 -behaviour(emqx_resource).
 -behaviour(hocon_schema).
@@ -230,6 +231,17 @@ on_start(
         processed_payload_template => ProcessedTemplate,
         config => Config
     },
+    %% Initialize RabbitMQ's secret library so that the password is encrypted
+    %% in the log files.
+    case credentials_obfuscation:secret() of
+        ?PENDING_SECRET ->
+            Bytes = crypto:strong_rand_bytes(128),
+            %% The password can appear in log files if we don't do this
+            credentials_obfuscation:set_secret(Bytes);
+        _ ->
+            %% Already initialized
+            ok
+    end,
     case emqx_resource_pool:start(InstanceID, ?MODULE, Options) of
         ok ->
             {ok, State};

apps/emqx_rule_engine/src/emqx_rule_engine.app.src

@@ -2,7 +2,7 @@
 {application, emqx_rule_engine, [
     {description, "EMQX Rule Engine"},
     % strict semver, bump manually!
-    {vsn, "5.0.18"},
+    {vsn, "5.0.19"},
     {modules, []},
     {registered, [emqx_rule_engine_sup, emqx_rule_engine]},
     {applications, [kernel, stdlib, rulesql, getopt, emqx_ctl]},