Not really a problem with UDP itself, but with some very old protocols like DNS that rely on UDP but can’t be changed because of compatibility. If you’re writing a new service that uses UDP, there’s nothing stopping you from designing it so that it doesn’t provide an opportunity for bandwidth amplification.
There’s nothing wrong with UDP. At least not that I know of.
https://www.cisa.gov/news-events/alerts/2014/01/17/udp-based-amplification-attacks
Not really a problem with UDP itself, but with some very old protocols like DNS that rely on UDP but can’t be changed because of compatibility. If you’re writing a new service that uses UDP, there’s nothing stopping you from designing it so that it doesn’t provide an opportunity for bandwidth amplification.
It’s technically not a bug if it’s operating as intended