FreeBSD : dovecot -- Dovecot DoS when passdb dict was used for authentication (a8c8001b-216c-11e7-80aa-005056925db4)
High Nessus Plugin ID 99750
The remote FreeBSD host is missing one or more security-related updates.
Timo Sirainen reports : passdb/userdb dict: Don't double-expand %variables in keys. If dict was used as the authentication passdb, using specially crafted %variables in the username could be used to cause DoS.