[USN-4638-1] c-ares vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Thu Nov 19 14:06:19 UTC 2020
Ubuntu Security Notice USN-4638-1
November 19, 2020
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.10
c-ares could be made to denial of service if it received a specially crafted
- c-ares: library for asynchronous name resolution
It was discovered that c-ares incorrectly handled certain DNS requests.
An attacker could possibly use this issue to cause a denial of service.
The problem can be corrected by updating your system to the following
In general, a standard system update will make all the necessary changes.
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