[USN-5312-1] HAProxy vulnerability

Marc Deslauriers marc.deslauriers at canonical.com
Thu Mar 3 13:44:15 UTC 2022

Ubuntu Security Notice USN-5312-1
March 03, 2022

haproxy vulnerability

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

- Ubuntu 21.10
- Ubuntu 20.04 LTS


HAProxy could be made to stop responding if it received specially crafted
network traffic.

Software Description:
- haproxy: fast and reliable load balancing reverse proxy


It was discovered that HAProxy incorrectly handled certain headers. A
remote attacker could possibly use this issue to cause HAProxy to stop
responding, resulting in a denial of service.

Update instructions:

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

Ubuntu 21.10:
  haproxy                         2.2.9-2ubuntu2.1

Ubuntu 20.04 LTS:
  haproxy                         2.0.13-2ubuntu0.5

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


Package Information:
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