MaraDNS versions 1.2.12.05-stable and below and 1.3.04-testing and below suffer from a denial of service condition.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/57238/maradns-dos.txt
Source: https://packetstormsecurity.com/files/57238/maradns-dos.txt.html