Ignore iterating multiple rhosts if option not registered

lib/msf/ui/console/command_dispatcher/exploit.rb

@@ -113,6 +113,10 @@ class Exploit
     mod_with_opts = mod.replicant
     mod_with_opts.datastore.import_options_from_hash(args[:datastore_options])
     rhosts = mod_with_opts.datastore['RHOSTS']
+    has_rhosts_option = mod.options.include?('RHOSTS') ||
+      mod.options.include?('RHOST') ||
+      mod.options.include?('rhost') ||
+      mod.options.include?('rhosts')
 
     opts = {
       'Encoder'     => args[:encoder] || mod_with_opts.datastore['ENCODER'],
@@ -134,7 +138,8 @@ class Exploit
       return false
     end
 
-    if rhosts
+
+    if rhosts && has_rhosts_option
       rhosts_walker = Msf::RhostsWalker.new(rhosts, mod_with_opts.datastore)
       rhosts_walker_count = rhosts_walker.count
       rhosts_walker = rhosts_walker.to_enum

spec/lib/msf/ui/console/command_dispatcher/exploit_spec.rb

@@ -72,6 +72,8 @@ RSpec.describe Msf::Ui::Console::CommandDispatcher::Exploit do
             Msf::OptFloat.new('FloatValue', [false, 'A FloatValue which should be normalized before framework runs this module', 3.5])
           ]
         )
+
+        deregister_options('RHOSTS')
       end
 
       def run
@@ -445,6 +447,20 @@ RSpec.describe Msf::Ui::Console::CommandDispatcher::Exploit do
         expect(@combined_output).to match_array(expected_output)
       end
 
+      it 'runs the module once, even if multiple rhost values are set' do
+        set_default_payload(current_mod)
+        current_mod.datastore.store('FloatValue', '10.0')
+        current_mod.datastore['RHOSTS'] = '192.0.2.1 192.0.2.2 192.0.2.3'
+        subject.cmd_run
+        expected_output = [
+          'Running with normalized datastore value 10.0',
+          'Cleanup',
+          'Exploit completed, but no session was created.'
+        ]
+
+        expect(@combined_output).to match_array(expected_output)
+      end
+
       it 'normalized the datastore before running' do
         set_default_payload(current_mod)
         current_mod.datastore.store('FloatValue', '5.0')