CVE-2021-3672

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The highest threat from this vulnerability is to confidentiality and integrity as well as system availability."}, {"lang": "es", "value": "Se ha encontrado un fallo en la biblioteca c-ares, en la que una falta de comprobaci\u00f3n de la comprobaci\u00f3n de entrada de los nombres de host devueltos por los DNS (Servidores de Nombres de Dominio) puede conllevar a una salida de nombres de host err\u00f3neos, que podr\u00eda conllevar potencialmente a un Secuestro de Dominios. La mayor amenaza de esta vulnerabilidad es para la confidencialidad e integridad, as\u00ed como para la disponibilidad del sistema"}], "id": "CVE-2021-3672", "lastModified": "2026-06-17T04:05:32.540", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.4, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-3672", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-10-15T17:09:33.511285Z", "version": "2.0.3"}}]}, "published": "2021-11-23T19:15:07.877", "references": [{"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1988342"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://c-ares.haxx.se/adv_20210810.html"}, {"source": "secalert@redhat.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}, {"source": "secalert@redhat.com", "url": "https://security.gentoo.org/glsa/202401-02"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujul2022.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1988342"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://c-ares.haxx.se/adv_20210810.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202401-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpujul2022.html"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2021:3623", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:12-8040020210817133458.522a0ee4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-09-21T00:00:00Z"}, {"advisory": "RHSA-2021:3666", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "nodejs:14-8040020210817165654.522a0ee4", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-09-27T00:00:00Z"}, {"advisory": "RHSA-2022:2043", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "c-ares-0:1.13.0-6.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2021:3639", "cpe": "cpe:/a:redhat:rhel_eus:8.1", "package": "nodejs:12-8010020210817113128.c27ad7f8", "product_name": "Red Hat Enterprise Linux 8.1 Extended Update Support", "release_date": "2021-09-22T00:00:00Z"}, {"advisory": "RHSA-2021:3638", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "nodejs:12-8020020210817125332.4cda2c84", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-09-22T00:00:00Z"}, {"advisory": "RHSA-2021:3280", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs14-nodejs-0:14.17.5-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-08-26T00:00:00Z"}, {"advisory": "RHSA-2021:3281", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-0:12.22.5-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-08-26T00:00:00Z"}, {"advisory": "RHSA-2021:3281", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2021-08-26T00:00:00Z"}, {"advisory": "RHSA-2021:3280", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs14-nodejs-0:14.17.5-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-26T00:00:00Z"}, {"advisory": "RHSA-2021:3281", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-0:12.22.5-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-26T00:00:00Z"}, {"advisory": "RHSA-2021:3281", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-nodejs12-nodejs-nodemon-0:2.0.3-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2021-08-26T00:00:00Z"}], "bugzilla": {"description": "c-ares: Missing input validation of host names may lead to domain hijacking", "id": "1988342", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1988342"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "status": "verified"}, "cwe": "CWE-79", "details": ["A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.", "A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability."], "name": "CVE-2021-3672", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "c-ares", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "c-ares", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "nodejs:16/nodejs", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "c-ares", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-3672\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-3672\nhttps://c-ares.haxx.se/adv_20210810.html"], "threat_severity": "Moderate"}

{}