My overflow is leaking where the pipes are hooked up on the outside of the tub I have access to the pipes how do I fix it and what do I need

See the attachment if your looks like the picture and you be able to see how the overflow is attached to the tub, Thanks.

John

Try to tighten the two screws on the face plate. If that don't get it perhaps you're in the market for this;
Ultimate Overflow Gasket
Good luck, tom