Shops see a little grease coming from a Front Drive Shaft (FDS), CV boot. They'll say it needs replacing. When often it's merely a weep, and only few table snoops have come out. If this is just from loose CV boot clamp, it can just be re-clamping. Mostly, it's the inner CV boot, small (outer)...
I'll add some parts to the list.
Oil seal, diff side. Last thing you'll want is to go back in, due to gear lube leak.
Cone washers, for the new Hub flanges. Good used hub flange and cone washers, can be used. But best is to seat all new, w/new axle of FDS (AKA CV), to get max clunk free miles...