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Ubuntu 20.04 LTS USN-4698-2 Critical DoS: Dnsmasq Regresions Fix

ubuntu
Calendar Grey February 24, 2021
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-4698-2 fixes critical Dnsmasq regressions to prevent Denial of Service attacks.
USN-4698-1 introduced regressions in Dnsmasq.

Summary

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu ubuntu regression dnsmasq

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10: dnsmasq 2.82-1ubuntu1.2 dnsmasq-base 2.82-1ubuntu1.2 dnsmasq-utils 2.82-1ubuntu1.2 Ubuntu 20.04 LTS: dnsmasq 2.80-1.1ubuntu1.3 dnsmasq-base 2.80-1.1ubuntu1.3 dnsmasq-utils 2.80-1.1ubuntu1.3 Ubuntu 18.04 LTS: dnsmasq 2.79-1ubuntu0.3 dnsmasq-base 2.79-1ubuntu0.3 dnsmasq-utils 2.79-1ubuntu0.3 Ubuntu 16.04 LTS: dnsmasq 2.75-1ubuntu0.16.04.8 dnsmasq-base 2.75-1ubuntu0.16.04.8 dnsmasq-utils 2.75-1ubuntu0.16.04.8 After a standard system update you need to reboot your computer to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4698-2

https://ubuntu.com/security/notices/USN-4698-1

https://bugs.launchpad.net/ubuntu/+source/dnsmasq/+bug/1916462

Severity
critical
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Critical

February 24, 2021

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu ubuntu regression dnsmasq

Package Information

https://launchpad.net/ubuntu/+source/dnsmasq/2.82-1ubuntu1.2 https://launchpad.net/ubuntu/+source/dnsmasq/2.80-1.1ubuntu1.3 https://launchpad.net/ubuntu/+source/dnsmasq/2.79-1ubuntu0.3 https://launchpad.net/ubuntu/+source/dnsmasq/2.75-1ubuntu0.16.04.8

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