Seoul shares hit 4 mth closing low on Dubai fears

* KOSPI posts biggest daily pct fall in over 10 months

* Banks, construction issues lead declines

* Tour issues outperform

(Updates to close)

By Jungyoun Park

SEOUL, Nov 27 (Reuters) - Seoul shares fell 4.7 percent on Friday, posting their lowest close in four months, as deepening concerns about Dubai's debt problems rocked financial and construction issues including KB Financial Group (105560.KS).

The Korea Composite Stock Price Index (KOSPI) ended down 75.02 points at 1,524.50, its lowest close since July 29 and registering its biggest daily percentage loss since mid-January.

"South Korean banks and construction players have little direct exposure to Dubai, but there are worries the Dubai situation may have larger implications, perhaps leading to another global credit crisis, sent stocks tanking," said Lee Young-won, a senior market strategist at Prudential Investment & Securities.

In the event of a broader credit crisis, South Korea could be one of the most vulnerable countries to foreign capital flight, according to the head of research at Samsung Securities Kim Hag-ju.