While in other torrent clients, uTorrrent and Vuze the attack is boosted by 39 and 54 times respectively.
The attacker only needs a valid info-hash, or the secret in case of BitTorrent Sync.
With a single BitTorrent Sync ping message, an attacker can amplify the traffic up to 120 times.
However uTorrent and Vuze are still vulnerable to a DHT attack.
source: www.techworm.net