Jeppe Huldahl (66) Jamie Donaldson (71) and Simon Dyson (71) were one shot back at the Kuta Golf Resort course in Bali. Webster stood at 6-under 138.
Huldahl had seven birdies and one bogey for the best round of the day. First-round leader Angelo Que shot 76 after a 64, falling two strokes back.
The tournament is jointly sanctioned by the Asian and European Tours.