Attach moulding to plaster wall?

Hello all… I searched the posts but couldn’t find an answer. Maybe it is too basic a question! lol I am trying to figure out how to attach new wood moulding baseboards to my plaster coated walls (pre-war apt building) and my original fantasy of nailing it was cut short by the reality that behind the plaster is block (not wooden studs). Is there any more modern way to affix the moulding than those crazy long spikes that are nearly impossible to get in the wall?

Help!

By sogr8ful |