Gentoo Linux Security Advisory GLSA 200708-13 – Amit Klein from Trusteer reported that the random number generator of ISC BIND leads, half the time, to predictable (1 chance to 8) query IDs in the resolver routine or in zone transfer queries. Additionally, the default configuration file has been strengthen with respect to the allow-recursion{} and the allow-query{} options. Versions less than 9.4.1_p1 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/58695/glsa-200708-13.txt
Source: https://packetstormsecurity.com/files/58695/Gentoo-Linux-Security-Advisory-200708-13.html