Ubuntu Security Notice USN-4321-1
April 07, 2020
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 19.10
– Ubuntu 18.04 LTS
HAProxy could be made to execute arbitrary code if it received a specially crafted HTTP/2 request.
– haproxy: fast and reliable load balancing reverse proxy
Felix Wilhelm discovered that HAProxy incorrectly handled certain HTTP/2 requests.
An attacker could possibly use this to execute arbitrary code.
The problem can be corrected by updating your system to the following
Ubuntu 18.04 LTS:
In general, a standard system update will make all the necessary changes.