Both sides in Sudan's civil war have committed abuses that may amount to war crimes including indiscriminate attacks on civilian sites like hospitals, markets and even camps for the displaced, the UN human rights office said on Friday. Efforts have so far failed to end the 10-month-old conflict that pits Sudan's regular armed forces and the paramilitary Rapid Support Forces (RSF). Thousands of people have been killed and some six million forced to flee their homes, making it the country with the largest displaced population in the world.