cvelist/2020/15xxx/CVE-2020-15240.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-15240",
        "STATE": "PUBLIC",
        "TITLE": "Regression in JWT Signature Validation"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "omniauth-auth0",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": ">= 2.3.0, <2.4.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "auth0"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "omniauth-auth0 (rubygems) versions >= 2.3.0 and < 2.4.1 improperly validate the JWT token signature when using the `jwt_validator.verify` method. Improper validation of the JWT token signature can allow an attacker to bypass authentication and authorization. You are affected by this vulnerability if all of the following conditions apply: 1. You are using `omniauth-auth0`. 2. You are using `JWTValidator.verify` method directly OR you are not authenticating using the SDK\u2019s default Authorization Code Flow. The issue is patched in version 2.4.1."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-287 Improper Authentication"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-347 Improper Verification of Cryptographic Signature"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm",
                "refsource": "CONFIRM",
                "url": "https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm"
            },
            {
                "name": "https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a",
                "refsource": "MISC",
                "url": "https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a"
            },
            {
                "name": "https://rubygems.org/gems/omniauth-auth0",
                "refsource": "MISC",
                "url": "https://rubygems.org/gems/omniauth-auth0"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-58r4-h6v8-jcvm",
        "discovery": "UNKNOWN"
    }
}