1. Ubuntu Security Notices
  2. USN-3893-1

USN-3893-1: Bind vulnerabilities

Publication date

22 February 2019

Overview

Several security issues were fixed in Bind.

Releases

Packages

  • 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)

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

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
18.10 cosmic bind9 –  1:9.11.4+dfsg-3ubuntu5.1
18.04 bionic bind9 –  1:9.11.3+dfsg-1ubuntu1.5
16.04 xenial bind9 –  1:9.10.3.dfsg.P4-8ubuntu1.12
14.04 trusty bind9 –  1:9.9.5.dfsg-3ubuntu0.19

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References

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