Package: memcached Version: 1.4.33-1 Memcached is currently involved in some massive ddos attacks, see e.g.: https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/
The UDP protocol of memcached can be abused for very effective DDoS amplification attacks and should therefore be considered dangerous. Upstream memcached has reacted to this by disabling UDP by default: https://github.com/memcached/memcached/wiki/ReleaseNotes156 In Debian memcached by default only listens to 127.0.0.1, but enables UDP. While the localhost-only protects default settings, it's still only a minor change away from creating an effective DDoS tool for a protocol that is hardly in use today. I recommend that you backport the upstream change and disable UDP by default.