He initially joined the Warriors in February 2013 as the Scotstoun club lost their frontline hookers to international duty and injury.
Earlier in the season he was named in Glasgow's Heineken Cup squad for this term's competition.
The former Biggar, Melrose and Watsonians player was previously attached to Edinburgh and will provide cover at hooker.
Fraser has represented Scotland at age-group, sevens, club international and full international level.