CVE-2021-36222

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This occurs because a return value is not properly managed in a certain situation."}, {"lang": "es", "value": "La funci\u00f3n ec_verify en el archivo kdc/kdc_preauth_ec.c en el Centro de Distribuci\u00f3n de Claves (KDC) en MIT Kerberos 5 (tambi\u00e9n se conoce como krb5) versiones anteriores a 1.18.4 y versiones 1.19.x anteriores a 1.19.2, permite a atacantes remotos causar una desreferencia de puntero NULL y un bloqueo del daemon. Esto ocurre porque un valor de retorno no es manejado apropiadamente en una situaci\u00f3n determinada"}], "id": "CVE-2021-36222", "lastModified": "2026-10-14T12:17:14.713", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-07-22T18:15:23.337", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/krb5/krb5/releases"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20211022-0003/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20211104-0007/"}, {"source": "cve@mitre.org", "tags": ["Not Applicable"], "url": "https://web.mit.edu/kerberos/advisories/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4944"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/krb5/krb5/commit/fc98f520caefff2e5ee9a0026fdf5109944b3562"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/krb5/krb5/releases"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20211022-0003/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20211104-0007/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Not Applicable"], "url": "https://web.mit.edu/kerberos/advisories/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2021/dsa-4944"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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