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    CVE-2022-24790

    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.

    Published:Mar 30, 2022
    Last Modified:Apr 23, 2025
    EPS:Mar 30, 2022
    EPSS Score:0.0041
    CVSS Score:9.1

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Puma
    Product
    Puma
    Vendor
    Redhat
    Product
    Satellite
    Vendor
    Redhat
    Product
    Storage

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

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    References

    https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5
    https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9
    https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/
    https://security.gentoo.org/glsa/202208-28
    https://www.debian.org/security/2022/dsa-5146
    https://github.com/puma/puma/commit/5bb7d202e24dec00a898dca4aa11db391d7787a5
    https://github.com/puma/puma/security/advisories/GHSA-h99w-9q5r-gjq9
    https://lists.debian.org/debian-lts-announce/2022/08/msg00015.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F6YWGIIKL7KKTS3ZOAYMYPC7D6WQ5OA5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7NESIBFCNSR3XH7LXDPKVMSUBNUB43G/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUBFJ44NCKJ34LECZRAP4N5VL6USJSIB/
    https://security.gentoo.org/glsa/202208-28
    https://www.debian.org/security/2022/dsa-5146

    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