The resolver in MaraDNS before and 1.4.x before 1.4.12
overwrites cached server names and TTL values in NS records during the
processing of a response to an A record query, which allows remote
attackers to trigger continued resolvability of revoked domain names via a
"ghost domain names" attack.
Upstream:released (, 1.4.12)
Ubuntu 12.04 ESM (Precise Pangolin):DNE (precise was needed)
Ubuntu 14.04 LTS (Trusty Tahr):needed
Ubuntu 16.04 LTS (Xenial Xerus):needed
Ubuntu 18.04 LTS (Bionic Beaver):needed
Ubuntu 18.10 (Cosmic Cuttlefish):needed
Ubuntu 19.04 (Disco Dingo):needed
More Information

Updated: 2019-01-14 21:14:36 UTC (commit 51f9b73af244ba86b9321e46e526586c25a8e060)