========================================================================== Ubuntu Security Notice USN-3893-1 February 22, 2019
bind9 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 LTS Summary: Several security issues were fixed in Bind. Software Description: - bind9: Internet Domain Name Server Details: Toshifumi Sakaguchi discovered that Bind incorrectly handled memory. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-5744) 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 18.10: bind9 1:9.11.4+dfsg-3ubuntu5.1 Ubuntu 18.04 LTS: bind9 1:9.11.3+dfsg-1ubuntu1.5 Ubuntu 16.04 LTS: bind9 1:9.10.3.dfsg.P4-8ubuntu1.12 Ubuntu 14.04 LTS: bind9 1:9.9.5.dfsg-3ubuntu0.19 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/usn/usn-3893-1 CVE-2018-5744, CVE-2018-5745, CVE-2019-6465 Package Information: https://launchpad.net/ubuntu/+source/bind9/1:9.11.4+dfsg-3ubuntu5.1 https://launchpad.net/ubuntu/+source/bind9/1:9.11.3+dfsg-1ubuntu1.5 https://launchpad.net/ubuntu/+source/bind9/1:9.10.3.dfsg.P4-8ubuntu1.12 https://launchpad.net/ubuntu/+source/bind9/1:9.9.5.dfsg-3ubuntu0.19
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