Gnabry and Havertz queue up at the back post and the latter taps-in from close range.
Earlier today in Group F, France were held to a 1-1 draw against Hungary.
Despite a rather underwhelming performance for large parts against Hungary, Portugal ran out 3-0 winners in their opener in Budapest.
Toni Kroos Germany right footed shot from the centre of the box is blocked.
The right wing-back selflessly opts to square and Guerreiro is forced to turn into his own net with Gnabry waiting to capitalise behind him.
Low will be satisfied with his team's first-half performance, especially their response to going a goal down in the early stages.