Alisson could count himself lucky after a straight red card in the first half, for a high boot on Enner Valencia, was downgraded to a yellow and then a second yellow card in injury-time was also overturned on review.
Ecuador's Argentine coach Gustavo Alfaro was furious after four VAR reviews -- two to check possible dismissals and two for penalties originally awarded by Colombian referee Wilmar Roldan -- all went against the hosts in Quito.
"We're shocked by the development of the match, by all the strange things, by everything that happened," said Alfaro.
"I don't want any favours, all I want is justice.
"We feel that we had the chance to achieve a historic victory taken away from us."
Even so, the point inches Ecuador closer to World Cup qualification with three games left as they have a seven-point gap to fifth-placed Colombia.
Uruguay also boosted their hopes as Luis Suarez gave them a 1-0 win away to Paraguay.
But Chile slipped further away from qualification after a 2-1 defeat at home to Argentina.
Brazil and Argentina have already booked their tickets for Qatar.