cvelist/2024/21xxx/CVE-2024-21670.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-21670",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Ursa is a cryptographic library for use with blockchains. The revocation schema that is part of the Ursa CL-Signatures implementations has a flaw that could impact the privacy guarantees defined by the AnonCreds verifiable credential model, allowing a malicious holder of a revoked credential to generate a valid Non-Revocation Proof for that credential as part of an AnonCreds presentation. A verifier may verify a credential from a holder as being \"not revoked\" when in fact, the holder's credential has been revoked. Ursa has moved to end-of-life status and no fix is expected."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-327: Use of a Broken or Risky Cryptographic Algorithm",
                        "cweId": "CWE-327"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "hyperledger-archives",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "ursa",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "<= 0.3.7"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-r78f-4q2q-hvv4",
                "refsource": "MISC",
                "name": "https://github.com/hyperledger-archives/ursa/security/advisories/GHSA-r78f-4q2q-hvv4"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-r78f-4q2q-hvv4",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "HIGH",
                "attackVector": "PHYSICAL",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:N",
                "version": "3.1"
            }
        ]
    }
}