Unbound -- Multiple vulnerabilities

NLnet Labs reports:

novel type of the “ghost domain names” attack. The vulnerability
works by targeting an Unbound instance. Unbound is queried for a
rogue domain name when the cached delegation information is about to
expire. The rogue nameserver delays the response so that the cached
delegation information is expired. Upon receiving the delayed answer
containing the delegation information, Unbound overwrites the now
expired entries. This action can be repeated when the delegation
information is about to expire making the rogue delegation
information ever-updating.
novel type of the “ghost domain names” attack. The vulnerability
works by targeting an Unbound instance. Unbound is queried for a
subdomain of a rogue domain name. The rogue nameserver returns
delegation information for the subdomain that updates Unbound’s
delegation cache. This action can be repeated before expiry of the
delegation information by querying Unbound for a second level
subdomain which the rogue nameserver provides new delegation
information.