CVE-2019-5420

    Dashboard / Vulnerabilities / CVE-2019-5420

    CVE-2019-5420

    Published: 27 Mar 2019Last Modified: 9 Sept 2026

    Summary:

    Details: A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.

    References: https://groups.google.com/forum/#%21topic/rubyonrails-security/IsQKvDqZdKw, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA/, https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/, http://packetstormsecurity.com/files/152704/Ruby-On-Rails-DoubleTap-Development-Mode-secret_key_base-Remote-Code-Execution.html, https://www.exploit-db.com/exploits/46785/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e69ff43060c1194d2a3bd9b8d9e23f3ae26b84b5

    Affected versions

    6.0.0-beta1
    6.0.0-beta2

    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