USN-4212-1: HAProxy vulnerability

U

Ubuntu security notices

Guest
haproxy vulnerability


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

  • Ubuntu 19.10
  • Ubuntu 19.04
  • Ubuntu 18.04 LTS
Summary


HAProxy could be made to execute arbitrary code if it received a specially crafted HTTP/2 header.

Software Description

  • haproxy - fast and reliable load balancing reverse proxy
Details


Tim Düsterhus discovered that HAProxy incorrectly handled certain HTTP/2 headers. An attacker could possibly use this issue to execute arbitrary code through CRLF injection.

Update instructions


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

Ubuntu 19.10
haproxy - 2.0.5-1ubuntu0.3
Ubuntu 19.04
haproxy - 1.8.19-1ubuntu1.3
Ubuntu 18.04 LTS
haproxy - 1.8.8-1ubuntu0.9

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References


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