Subject to subsection (c), the foreclosure deed or deeds shall convey all of the right, title, and interest in the security property covered by the deed which the Secretary as holder, the foreclosure commissioner, the mortgagor, and any other persons claiming by, through, or under them, had on the date of execution of the mortgage, together with all of the right, title, and interest thereafter acquired by any of them in such property up to the hour of sale, and no judicial proceeding shall be required ancillary or supplementary to the procedures provided in this chapter to assure the validity of the conveyance or confirmation of such conveyance.