[USN-5063-1] HAProxy vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Wed Sep 8 13:14:10 UTC 2021

Ubuntu Security Notice USN-5063-1
September 08, 2021

haproxy vulnerabilities

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS


HAProxy could be made to expose sensitive information over the network.

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


Ori Hollander discovered that HAProxy incorrectly handled HTTP header name
length encoding. A remote attacker could possibly use this issue to inject
a duplicate content-length header and perform request smuggling attacks.

Update instructions:

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

Ubuntu 21.04:
  haproxy                         2.2.9-1ubuntu0.2

Ubuntu 20.04 LTS:
  haproxy                         2.0.13-2ubuntu0.3

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


Package Information:

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