========================================================================== Ubuntu Security Notice USN-3893-2 February 25, 2019 bind9 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 12.04 ESM Summary: Several security issues were fixed in Bind. Software Description: - bind9: Internet Domain Name Server Details: 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) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 12.04 ESM: bind9 1:9.8.1.dfsg.P1-4ubuntu0.27 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3893-2 https://usn.ubuntu.com/usn/usn-3893-1 CVE-2018-5745, CVE-2019-6465