A tar security update has been released for Ubuntu 14.04 ESM, 16.04 ESM, 18.04 LTS, and 20.04 LTS.

USN-5329-1: tar vulnerability

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Ubuntu Security Notice USN-5329-1
March 15, 2022

tar vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM

Summary:

tar could be made to crash if it received specially crafted
file.

Software Description:
- tar: GNU version of the tar archiving utility

Details:

It was discovered that tar incorrectly handled certain files.
An attacker could possibly use this issue to cause tar to crash,
resulting in a denial of service.

Update instructions:

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

Ubuntu 20.04 LTS:
tar 1.30+dfsg-7ubuntu0.20.04.2

Ubuntu 18.04 LTS:
tar 1.29b-2ubuntu0.3

Ubuntu 16.04 ESM:
tar 1.28-2.1ubuntu0.2+esm1

Ubuntu 14.04 ESM:
tar 1.27.1-1ubuntu0.1+esm2

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

References:
https://ubuntu.com/security/notices/USN-5329-1
CVE-2021-20193

Package Information:
https://launchpad.net/ubuntu/+source/tar/1.30+dfsg-7ubuntu0.20.04.2
https://launchpad.net/ubuntu/+source/tar/1.29b-2ubuntu0.3