USN-6530-1: HAProxy vulnerability

Publication date

5 December 2023

Overview

HAProxy could be made to expose sensitive information.


Packages

  • haproxy - fast and reliable load balancing reverse proxy

Details

It was discovered that HAProxy incorrectly handled URI components
containing the hash character (#). A remote attacker could possibly use
this issue to obtain sensitive information, or to bypass certain path_end
rules.

It was discovered that HAProxy incorrectly handled URI components
containing the hash character (#). A remote attacker could possibly use
this issue to obtain sensitive information, or to bypass certain path_end
rules.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.04 lunar haproxy –  2.6.9-1ubuntu1.2
22.04 jammy haproxy –  2.4.22-0ubuntu0.22.04.3
20.04 focal haproxy –  2.0.31-0ubuntu0.3

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