1. Ubuntu Security Notices
  2. USN-3421-2

USN-3421-2: Libidn2 vulnerability

Publication date

15 March 2021

Overview

Libidn2 could be made to crash if it received specially crafted input.

Releases

Packages

  • libidn2-0 - Internationalized domain names (IDNA2008) library

Details

USN-3421-1 fixed a vulnerability in Libidn2. This update provides the
corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

USN-3421-1 fixed a vulnerability in Libidn2. This update provides the
corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

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 libidn2-0 –  0.10-3ubuntu0.1~esm1  
idn2 –  0.10-3ubuntu0.1~esm1  
14.04 trusty libidn2-0 –  0.9-1ubuntu0.1~esm1  
idn2 –  0.9-1ubuntu0.1~esm1  

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References

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