Ind. Code § 32-30-3.1-7

Sec. 7. Except when the purchaser knows at the time of the sale that the seller lacks authority to sell the property, a purchaser who in good faith, at a judicial or tax sale, purchases property that is sold by the proper person or officer has color of title within the meaning of this chapter, whether or not the person or officer had sufficient authority to sell the property. The rights of the purchaser acquired under this section pass to the purchaser's assignees or representatives.