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USN-5042-1: HAProxy vulnerabilities

17 August 2021

Several security issues were fixed in HAProxy.



  • haproxy - fast and reliable load balancing reverse proxy


It was discovered that HAProxy incorrectly handled the HTTP/2 protocol. A
remote attacker could possibly use this issue to bypass restrictions.

Update instructions

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

Ubuntu 21.04
Ubuntu 20.04

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