They will now face Olympic gold medallists Fiji in the last four (04:05, SA time), while England and New Zealand will meet in the other semi.
But it was Ward who grabbed the victor in the 42nd with a very clever reaction finish after his initial effort was blocked from a corner to secure a third Commonwealth medal in the men's team's history, following bronzes in both 1998 and 2014.
The Kenyans never had possession in the New Zealand half.
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A significant number of which were shot down by the Syrian forces. "President Putin, Russia and Iran are responsible for backing Animal Assad".
New Zealand had opened up a 12-0 halftime lead after tries to Portia Woodman and Blyde, before Emilee Cherry exploited some poor tackling close to the line and Ellia Green outpaced the cover defence to send the contest into extra time.
Skipper Sarah Goss got on the board early for the Ferns, outsmarting her right-edge marker to cross the line in the second minute.
England had earlier won both bronze medals with the men beating Glasgow Games champions South Africa 21-14 while the women beat Canada 24-19.