USN-6294-2: HAProxy vulnerability

USN-6294-2: HAProxy vulnerability

USN-6294-1 fixed vulnerabilities in HAProxy. This update provides the
corresponding updates for Ubuntu 20.04 LTS.

Original advisory details:

Ben Kallus discovered that HAProxy incorrectly handled empty Content-Length
headers. A remote attacker could possibly use this issue to manipulate the
payload and bypass certain restrictions.
Source: USN-6294-2: HAProxy vulnerability