UBUNTU-CVE-2022-24790

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    UBUNTU-CVE-2022-24790

    Published: 30 Mar 2022Last Modified: 4 Feb 2026
    Upstream:
    CVE-2022-24790
    Aliases:
    USN-6682-1

    Summary:

    Details: Puma is a simple, fast, multi-threaded, parallel HTTP 1.1 server for Ruby/Rack applications. When using Puma behind a proxy that does not properly validate that the incoming HTTP request matches the RFC7230 standard, Puma and the frontend proxy may disagree on where a request starts and ends. This would allow requests to be smuggled via the front-end proxy to Puma. The vulnerability has been fixed in 5.6.4 and 4.3.12. Users are advised to upgrade as soon as possible. Workaround: when deploying a proxy in front of Puma, turning on any and all functionality to make sure that the request matches the RFC7230 standard.

    References: https://ubuntu.com/security/CVE-2022-24790, https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5, https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9, https://ubuntu.com/security/notices/USN-6682-1, https://www.cve.org/CVERecord?id=CVE-2022-24790

    Affected packages

    Package

    Name: puma

    Purl: pkg:deb/ubuntu/[email protected]+esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.12.4-1ubuntu2+esm1

    Affected versions

    3.12.0-2ubuntu1
    3.12.0-4ubuntu1
    3.12.4-1ubuntu2

    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
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