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USN-4321-1: HAProxy vulnerability

7 April 2020

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.

Update instructions

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

Ubuntu 19.10
Ubuntu 18.04

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