USN-6294-2

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    USN-6294-2

    Published: 17 Aug 2023Last Modified: 10 Feb 2026

    Summary: haproxy vulnerability

    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.

    References: https://ubuntu.com/security/notices/USN-6294-2, https://ubuntu.com/security/CVE-2023-40225

    Affected packages

    Package

    Name: haproxy

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.31-0ubuntu0.2

    Affected versions

    2.0.5-1
    2.0.8-1
    2.0.9-1
    2.0.10-1
    2.0.10-1ubuntu1
    2.0.11-1ubuntu1
    2.0.12-1ubuntu2
    2.0.13-1ubuntu2
    2.0.13-2
    2.0.13-2ubuntu0.1
    2.0.13-2ubuntu0.2
    2.0.13-2ubuntu0.3
    2.0.13-2ubuntu0.5
    2.0.29-0ubuntu1
    2.0.29-0ubuntu1.1
    2.0.29-0ubuntu1.3
    2.0.31-0ubuntu0.1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    USN-6294-2 | CVE-DB