1. Ubuntu Security Notices
  2. USN-6294-2

USN-6294-2: HAProxy vulnerability

Publication date

17 August 2023

Overview

HAProxy could allow unintended access to network services.

Releases

Packages

  • haproxy - fast and reliable load balancing reverse proxy

Details

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.

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.

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
20.04 focal haproxy –  2.0.31-0ubuntu0.2

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References

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