CVE-2021-42766

{"id": "CVE-2021-42766", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.4, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 4.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "published": "2021-10-20T20:15:07.517", "references": [{"url": "https://arxiv.org/abs/2110.10086", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://arxiv.org/abs/2110.10086", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "descriptions": [{"lang": "en", "value": "The Proof-of-Stake (PoS) Ethereum consensus protocol through 2021-10-19 allows an adversary to cause a denial of service (long-range consensus chain reorganizations), even when this adversary has little stake and cannot influence network message propagation. This can cause a protocol stall, or an increase in the profits of individual validators."}, {"lang": "es", "value": "El protocolo de consenso Proof-of-Stake (PoS) de Ethereum versiones hasta el 19-10-2021, permite a un adversario causar una denegaci\u00f3n de servicio (reorganizaciones de la cadena de consenso de largo alcance), incluso cuando este adversario presenta poco inter\u00e9s y no puede influir en la propagaci\u00f3n de los mensajes de la red. Esto puede causar una paralizaci\u00f3n del protocolo, o un aumento de las ganancias de los comprobadores individuales"}], "lastModified": "2024-11-21T06:28:07.957", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:proof-of-stake_ethereum_project:proof-of-stake_ethereum:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6E87032E-0270-4A77-805C-FFF130756A1E", "versionEndIncluding": "2021-10-19"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}