[USN-5042-1] HAProxy vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Tue Aug 17 17:29:09 UTC 2021

Ubuntu Security Notice USN-5042-1
August 17, 2021

haproxy vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.04 LTS


Several security issues were fixed in HAProxy.

Software Description:
- 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:
  haproxy                         2.2.9-1ubuntu0.1

Ubuntu 20.04 LTS:
  haproxy                         2.0.13-2ubuntu0.2

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


Package Information:

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