1. Ubuntu Security Notices
  2. USN-5126-2

USN-5126-2: Bind vulnerability

Publication date

28 October 2021

Overview

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

Releases

Packages

  • bind9 - Internet Domain Name Server

Details

USN-5126-1 fixed a vulnerability in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory 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.

USN-5126-1 fixed a vulnerability in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory 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.

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
16.04 xenial bind9 –  1:9.10.3.dfsg.P4-8ubuntu1.19+esm1  
14.04 trusty bind9 –  1:9.9.5.dfsg-3ubuntu0.19+esm5  

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References

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