-include-..-2f..-2f..-2f..-2froot-2f __link__ | 480p 2024 |

$allowed = ['home', 'about', 'contact']; if (in_array($_GET['page'], $allowed)) include('pages/' . $_GET['page'] . '.php');

GET /index.php?page=-include-..-2F GET /*.php?*-include-* GET /*.*-2Froot-2F Tools like grep : -include-..-2F..-2F..-2F..-2Froot-2F

$input = str_replace(['..', '-2F', '%2F', '\\'], '', $_GET['path']); $base = '/var/www/html/'; $user_path = $base . $_GET['file']; $real = realpath($user_path); if ($real === false || strpos($real, $base) !== 0) die('Invalid path'); Never Trust User Input in File Paths Do

It is important to address a query like this directly: The string -include-..-2F..-2F..-2F..-2Froot-2F appears to be an , likely attempting to exploit web application file inclusion vulnerabilities. $real = realpath($user_path)

include($_GET['page']); Use:

With , if allow_url_include is on and the attacker controls a remote file, they could inject a web shell. How to Defend Against This Payload (For Developers & Sysadmins) 1. Never Trust User Input in File Paths Do not allow user-supplied strings to be passed directly to include() , require() , file_get_contents() , or fopen() . 2. Whitelist Valid Inputs Instead of: