DIAGNOSIS This is by design, but also an indicator your burner might be too large. The handles are metal and will conduct heat from the pot's body, especially on a gas flame or an oversized electric coil.
FIX Always, always use a dry potholder or towel to handle the cooker when it's on the stove or just taken off. There's no fix to make them stay cool. For cooking, try to use a burner that matches the diameter of the pot's base as closely as possible to minimize excessive heat climbing up the sides.
IF THAT DIDN'T WORK Some people slip silicone handle covers (like those for cast iron skillets) onto them, but you must ensure they are rated for high heat and are securely fitted so they don't slip when you're carrying a full, heavy cooker. The manufacturer doesn't make official covers, so this is an at-your-own-risk mod.
HEADS UP The lid handle usually stays cooler because it's not in direct contact with the heat source, but the side handles will get hot. This isn't a defect; it's a physical property of metal. Just factor it into your routine.