USN-5126-1: Bind vulnerability

Publication date

28 October 2021

Overview

Bind could be made to consume resources if it received specially crafted network traffic.


Packages

  • bind9 - Internet Domain Name Server

Details

Kishore Kumar Kothapalli discovered that Bind incorrectly handled the lame
cache when processing responses. A remote attacker could possibly use this
issue to cause Bind to consume resources, resulting in a denial of service.

Kishore Kumar Kothapalli discovered that Bind incorrectly handled the lame
cache when processing responses. A remote attacker could possibly use this
issue to cause Bind to consume resources, resulting in a denial of service.

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
21.10 impish bind9 –  1:9.16.15-1ubuntu1.1
21.04 hirsute bind9 –  1:9.16.8-1ubuntu3.2
20.04 focal bind9 –  1:9.16.1-0ubuntu2.9
18.04 bionic bind9 –  1:9.11.3+dfsg-1ubuntu1.16

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›