Buh worked under former defensive coordinator Scott Shafer in 2007 at Stanford.
Moore led the conference in receptions and receiving yards.
Lees helped the Terps clinch their 42-39 win over Indiana.
The Terps allowed more than 400 yards for the third time in four games.
The graduate transfer will be eligible to play immediately.
Third-string quarterback Max Bortenschlager led the Terps to victory.
“A year from now he’s got a chance to be a really special player.”
Pigrome suffered a season-ending ACL injury at Texas.
The Terps want to “prove people wrong” against some of the country’s top teams.
The Terps ranked fourth in the Big Ten last year in rushing yards, but they were just 10th in passing yards.