Frididaire dishwater leaking underneath

I noticed that our dishwasher was washing the floor as well as our dishes. Water was coming out from underneath ans it was running. I took off the lower front kick panel and watched as I started it. It took about 5 minutes before water started someing out of what looks like the back side of the pump/motor? Is this a gasket problem or am I looking at a complete replacement. I have not pulled the diswaher out yet, so what is the best way to approach this?

Thanks for your help.