Advisory Published

USN-6294-2: HAProxy vulnerability

First published: Thu Aug 17 2023(Updated: )

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.

Affected SoftwareAffected VersionHow to fix
All of
ubuntu/haproxy<2.0.31-0ubuntu0.2
2.0.31-0ubuntu0.2
=20.04

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Child vulnerabilities

(Contains the following vulnerabilities)

Frequently Asked Questions

  • What is the vulnerability ID for this HAProxy vulnerability?

    The vulnerability ID for this HAProxy vulnerability is USN-6294-2.

  • What is the severity of USN-6294-2?

    The severity of USN-6294-2 has not been disclosed in the provided information.

  • What software is affected by USN-6294-2?

    The software affected by USN-6294-2 is HAProxy version 2.0.31-0ubuntu0.2 on Ubuntu 20.04 LTS.

  • How do I fix the USN-6294-2 vulnerability?

    To fix the USN-6294-2 vulnerability, update HAProxy to version 2.0.31-0ubuntu0.2 or higher.

  • Where can I find more information about USN-6294-2?

    More information about USN-6294-2 can be found at the following references: [CVE-2023-40225](https://ubuntu.com/security/CVE-2023-40225), [USN-6294-1](https://ubuntu.com/security/notices/USN-6294-1), [Launchpad](https://launchpad.net/ubuntu/+source/haproxy/2.0.31-0ubuntu0.2).

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