Your submission was sent successfully! Close

USN-4149-1: Unbound vulnerability

08 October 2019

Unbound could be made to crash if it received a specially crafted NOTIFY query.



  • unbound - validating, recursive, caching DNS resolver


It was discovered that Unbound incorrectly handled certain NOTIFY queries.
An attacker could possibly use this issue to cause a denial of service.

Update instructions

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

Ubuntu 19.04

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