Several security issues were fixed in Bind.
USN-3893-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 12.04 ESM.
25 February 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Bind.
USN-3893-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
It was discovered that Bind incorrectly handled certain trust anchors when used with the "managed-keys" feature. A remote attacker could possibly use this issue to cause Bind to crash, resulting in a denial of service. (CVE-2018-5745)
It was discovered that Bind incorrectly handled certain controls for zone transfers, contrary to expectations. (CVE-2019-6465)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.