(b) The liability of a receiver for payment of any security deposit plus accrued interest pursuant to this subdivision shall be limited to the amount of such deposit actually turned over to him or it pursuant to subdivision one of section 7-105 of this chapter and to the operating income in excess of expenses generated during his or its period of receivership. 3. Any agreement by a lessee or tenant of a dwelling unit waiving or modifying his rights as set forth in this section shall be void.