USN-2668-1: HAProxy vulnerability

7 July 2015

haproxy vulnerability

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

  • Ubuntu 15.04
  • Ubuntu 14.10


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

Software Description

  • haproxy - fast and reliable load balancing reverse proxy


It was discovered that HAProxy incorrectly handled certain buffers. A remote attacker could possibly use this issue to obtain sensitive information belonging to previous requests.

Update instructions

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

Ubuntu 15.04
haproxy - 1.5.10-1ubuntu0.1
Ubuntu 14.10
haproxy - 1.5.4-1ubuntu2.1

To update your system, please follow these instructions:

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