cvelist/2021/29xxx/CVE-2021-29455.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-29455",
        "STATE": "PUBLIC",
        "TITLE": "Missing validation of JWT signature in `grassrootza/grassroot-platform`"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "grassroot-platform",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 1.3.1"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "grassrootza"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Grassroot Platform is an application to make it faster, cheaper and easier to persistently organize and mobilize people in low-income communities. Grassroot Platform before master deployment as of 2021-04-16 did not properly verify the signature of JSON Web Tokens when refreshing an existing JWT. This allows to forge a valid JWT. The problem has been patched in version 1.3.1 by deprecating the JWT refresh function, which was an overdue deprecation regardless (the \"refresh\" flow is no longer used)."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "{\"CWE-347\":\"Improper Verification of Cryptographic Signature\"}"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734",
                "refsource": "CONFIRM",
                "url": "https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734"
            },
            {
                "name": "https://github.com/grassrootza/grassroot-platform/",
                "refsource": "MISC",
                "url": "https://github.com/grassrootza/grassroot-platform/"
            },
            {
                "name": "https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67f",
                "refsource": "MISC",
                "url": "https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67f"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-f65w-6xw8-6734",
        "discovery": "UNKNOWN"
    }
}