USN-4638-1: c-ares vulnerability

19 November 2020

c-ares could be made to denial of service if it received a specially crafted DNS request.

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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It was discovered that c-ares incorrectly handled certain DNS requests.
An attacker could possibly use this issue to cause a denial of service.

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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

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

Ubuntu Pro provides up to ten-year security coverage for over 23,000 open-source packages within the Ubuntu Main and Universe repositories.