{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2019-5421",
        "ASSIGNER": "support@hackerone.com",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Plataformatec",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Devise ruby gem",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "4.5.0 and earlier using the lockable module"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "name": "https://github.com/plataformatec/devise/issues/4981",
                "url": "https://github.com/plataformatec/devise/issues/4981"
            },
            {
                "refsource": "MISC",
                "name": "https://github.com/plataformatec/devise/pull/4996",
                "url": "https://github.com/plataformatec/devise/pull/4996"
            }
        ]
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Plataformatec Devise version 4.5.0 and earlier, using the lockable module contains a CWE-367 vulnerability in The `Devise::Models::Lockable` class, more specifically at the `#increment_failed_attempts` method. File location: lib/devise/models/lockable.rb that can result in Multiple concurrent requests can prevent an attacker from being blocked on brute force attacks. This attack appear to be exploitable via Network connectivity - brute force attacks. This vulnerability appears to have been fixed in 4.6.0 and later."
            }
        ]
    }
}