{ "id": "CVE-2021-4090", "sourceIdentifier": "secalert@redhat.com", "published": "2022-02-18T18:15:10.207", "lastModified": "2022-12-13T20:40:39.280", "vulnStatus": "Analyzed", "descriptions": [ { "lang": "en", "value": "An out-of-bounds (OOB) memory write flaw was found in the NFSD in the Linux kernel. Missing sanity may lead to a write beyond bmval[bmlen-1] in nfsd4_decode_bitmap4 in fs/nfsd/nfs4xdr.c. In this flaw, a local attacker with user privilege may gain access to out-of-bounds memory, leading to a system integrity and confidentiality threat." }, { "lang": "es", "value": "Se encontr\u00f3 un fallo de escritura en memoria fuera de l\u00edmites (OOB) en el NFSD del kernel de Linux. Una falta de saneo puede conllevar a una escritura m\u00e1s all\u00e1 de bmval[bmlen-1] en nfsd4_decode_bitmap4 en el archivo fs/nfsd/nfs4xdr.c. En este fallo, un atacante local con privilegio de usuario puede conseguir acceso a memoria fuera de l\u00edmites, conllevando a una amenaza para la integridad y confidencialidad del sistema" } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH" }, "exploitabilityScore": 1.8, "impactScore": 5.2 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:N", "accessVector": "LOCAL", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "availabilityImpact": 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