1. Ubuntu Security Notices
  2. USN-6225-1

USN-6225-1: Knot Resolver vulnerability

Publication date

13 July 2023

Overview

Knot Resolver could be made to crash if it received specially crafted network traffic.

Releases

Packages

Details

It was discovered that Knot Resolver did not correctly handle certain
client options. A remote attacker could send requests to malicous domains
and cause a denial of service.

It was discovered that Knot Resolver did not correctly handle certain
client options. A remote attacker could send requests to malicous domains
and cause 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
22.10 kinetic knot-resolver –  5.5.1-5ubuntu0.22.10.1
22.04 jammy knot-resolver –  5.4.4-1ubuntu0.1~esm1  
20.04 focal knot-resolver –  3.2.1-3ubuntu2.1
18.04 bionic knot-resolver –  2.1.1-1ubuntu0.1~esm2  
libkres6 –  2.1.1-1ubuntu0.1~esm2  
libkres-dev –  2.1.1-1ubuntu0.1~esm2  
16.04 xenial knot-resolver –  1.0.0~beta3-1ubuntu0.1~esm1  

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References

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