Ubuntu 4976-1: Dnsmasq vulnerability
Summary
Update Instructions
The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: dnsmasq 2.84-1ubuntu2.1 dnsmasq-base 2.84-1ubuntu2.1 dnsmasq-utils 2.84-1ubuntu2.1 Ubuntu 20.10: dnsmasq 2.82-1ubuntu1.3 dnsmasq-base 2.82-1ubuntu1.3 dnsmasq-utils 2.82-1ubuntu1.3 Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.4 dnsmasq-base 2.80-1.1ubuntu1.4 dnsmasq-utils 2.80-1.1ubuntu1.4 Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.4 dnsmasq-base 2.79-1ubuntu0.4 dnsmasq-utils 2.79-1ubuntu0.4 After a standard system update you need to reboot your computer to make all the necessary changes.
References
https://ubuntu.com/security/notices/USN-4976-1
CVE-2021-3448
Package Information
https://launchpad.net/ubuntu/+source/dnsmasq/2.84-1ubuntu2.1 https://launchpad.net/ubuntu/+source/dnsmasq/2.82-1ubuntu1.3 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.4 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.4