DEBIAN-CVE-2025-61919

    Dashboard / Vulnerabilities / DEBIAN-CVE-2025-61919

    DEBIAN-CVE-2025-61919

    Published: 10 Oct 2025Last Modified: 1 Sept 2026
    Upstream:
    CVE-2025-61919

    Summary:

    Details: Rack is a modular Ruby web server interface. Prior to versions 2.2.20, 3.1.18, and 3.2.3, `Rack::Request#POST` reads the entire request body into memory for `Content-Type: application/x-www-form-urlencoded`, calling `rack.input.read(nil)` without enforcing a length or cap. Large request bodies can therefore be buffered completely into process memory before parsing, leading to denial of service (DoS) through memory exhaustion. Users should upgrade to Rack version 2.2.20, 3.1.18, or 3.2.3, anu of which enforces form parameter limits using `query_parser.bytesize_limit`, preventing unbounded reads of `application/x-www-form-urlencoded` bodies. Additionally, enforce strict maximum body size at the proxy or web server layer (e.g., Nginx `client_max_body_size`, Apache `LimitRequestBody`).

    References: https://security-tracker.debian.org/tracker/CVE-2025-61919

    Affected packages

    Package

    Name: ruby-rack

    Purl: pkg:deb/debian/ruby-rack?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.2.20-0+deb12u1

    Affected versions

    2.2.13-1~deb12u1
    2.2.6.4-1
    2.2.6.4-1+deb12u1
    2.2.7-1
    2.2.7-1.1

    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
    DEBIAN-CVE-2025-61919 | CVE-DB