N.Y. Real Prop. Acts. Law § 224

§ 224. Attornment by tenant. The attornment of a tenant to a stranger\nis absolutely void and does not in any way affect the possession of the\nlandlord unless made either:\n 1. With the consent of the landlord; or,\n 2. Pursuant to or in consequence of a judgment, order, or decree of a\ncourt of competent jurisdiction; or\n 3. To a purchaser at foreclosure sale.\n