 Well, I don't know how it's constructed. I can't see it, but I would say not. My guess is it's anchored on the 2x4s on the wall and resting on the slab, and I'm guessing that's how it's framed in, and then the water's saturating into the slab. So get a strap wrench, tighten that up, and get some tub and bath caulking around there. You're at home with Gary Sullivan.