CVE-2019-11808

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    CVE-2019-11808

    Published: 7 May 2019Last Modified: 8 Jul 2026

    Summary:

    Details: Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if an attacker can determine a small window for the server start time and obtain a session ID value, they can theoretically determine the sequence of session IDs.

    References: https://github.com/ratpack/ratpack/releases/tag/v1.6.1, https://github.com/ratpack/ratpack/commit/f2b63eb82dd71194319fd3945f5edf29b8f3a42d, https://github.com/ratpack/ratpack/issues/1448

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -11b87db977532b57298c223e4ec82854071b6c20

    Affected versions

    v1.6.0
    v1.6.0-rc-4
    v1.6.0-rc-3
    v1.6.0-rc-2

    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
    CVE-2019-11808 | CVE-DB