cvelist/2021/41xxx/CVE-2021-41263.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-41263",
        "STATE": "PUBLIC",
        "TITLE": "Secure/signed cookies share secrets between sites in rails_multisite"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "rails_multisite",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 4.0.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "discourse"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "rails_multisite provides multi-db support for Rails applications. In affected versions this vulnerability impacts any Rails applications using `rails_multisite` alongside Rails' signed/encrypted cookies. Depending on how the application makes use of these cookies, it may be possible for an attacker to re-use cookies on different 'sites' within a multi-site Rails application. The issue has been patched in v4 of the `rails_multisite` gem. Note that this upgrade will invalidate all previous signed/encrypted cookies. The impact of this invalidation will vary based on the application architecture."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-565: Reliance on Cookies without Validation and Integrity Checking"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/discourse/rails_multisite/security/advisories/GHSA-844m-cpr9-jcmh",
                "refsource": "CONFIRM",
                "url": "https://github.com/discourse/rails_multisite/security/advisories/GHSA-844m-cpr9-jcmh"
            },
            {
                "name": "https://github.com/discourse/rails_multisite/commit/c6785cdb5c9277dd2c5ac8d55180dd1ece440ed0",
                "refsource": "MISC",
                "url": "https://github.com/discourse/rails_multisite/commit/c6785cdb5c9277dd2c5ac8d55180dd1ece440ed0"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-844m-cpr9-jcmh",
        "discovery": "UNKNOWN"
    }
}