Crosby kicked his side into a 6-0 lead with a 26-yard field goal in the first quarter and a 52-yard one in the second.
David Akers reduced this lead to just three points at the halfway stage with a 53-yard kick of his own, but Mason restored the six-point gap in the third quarter.
Crosby extended the Packers' lead with his fourth field goal of the day, this time slotting his kick between the uprights in the final quarter from 42 yards.
Green Bay thought that they had a second touchdown late in the fourth but it was disallowed, forcing the Packers into a field goal attempt that Crosby kicked.
The same duo looked to combine for a two-point conversion but it was unsuccessful as the Packers saw out the match to make it two wins from two at Lambeau Field.