CVE-2021-20327

{"containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "MongoDB Node.js Driver mongodb-client-encryption module", "vendor": "MongoDB Inc.", "versions": [{"status": "affected", "version": "1.2.0"}]}], "datePublic": "2021-02-25T00:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>A specific version of the Node.js mongodb-client-encryption module does not perform correct validation of the KMS server\u2019s certificate. This vulnerability in combination with a privileged network position active MITM attack could result in interception of traffic between the Node.js driver and the KMS service rendering client-side field level encryption (CSFLE) ineffective. This issue was discovered during internal testing and affects mongodb-client-encryption module version 1.2.0, which was available from 2021-Jan-29 and deprecated in the NPM Registry on 2021-Feb-04. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services from applications residing inside the AWS, GCP, and Azure nework fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don\u2019t use Field Level Encryption. This issue affect MongoDB Node.js Driver mongodb-client-encryption module version 1.2.0</p><br>"}], "value": "A specific version of the Node.js mongodb-client-encryption module does not perform correct validation of the KMS server\u2019s certificate. This vulnerability in combination with a privileged network position active MITM attack could result in interception of traffic between the Node.js driver and the KMS service rendering client-side field level encryption (CSFLE) ineffective. This issue was discovered during internal testing and affects mongodb-client-encryption module version 1.2.0, which was available from 2021-Jan-29 and deprecated in the NPM Registry on 2021-Feb-04. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services from applications residing inside the AWS, GCP, and Azure nework fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don\u2019t use Field Level Encryption. 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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "MongoDB Node.js Driver mongodb-client-encryption module", "vendor": "MongoDB Inc.", "versions": [{"status": "affected", "version": "1.2.0"}]}], "source": "cna@mongodb.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:mongodb:mongodb_client_encryption:1.2.0:*:*:*:*:node.js:*:*", "matchCriteriaId": "C331E92F-3DC4-45D2-9C92-7BB645DE16CB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A specific version of the Node.js mongodb-client-encryption module does not perform correct validation of the KMS server\u2019s certificate. This vulnerability in combination with a privileged network position active MITM attack could result in interception of traffic between the Node.js driver and the KMS service rendering client-side field level encryption (CSFLE) ineffective. This issue was discovered during internal testing and affects mongodb-client-encryption module version 1.2.0, which was available from 2021-Jan-29 and deprecated in the NPM Registry on 2021-Feb-04. This vulnerability does not impact driver traffic payloads with CSFLE-supported key services from applications residing inside the AWS, GCP, and Azure nework fabrics due to compensating controls in these environments. This issue does not impact driver workloads that don\u2019t use Field Level Encryption. This issue affect MongoDB Node.js Driver mongodb-client-encryption module version 1.2.0"}, {"lang": "es", "value": "Una versi\u00f3n espec\u00edfica del m\u00f3dulo mongodb-client-encryption de Node.js no lleva a cabo una comprobaci\u00f3n correcta del certificado del servidor KMS. Esta vulnerabilidad, en combinaci\u00f3n con un ataque MITM activo en una posici\u00f3n de red privilegiada, podr\u00eda resultar en la interceptaci\u00f3n del tr\u00e1fico entre el controlador de Node.js y el servicio KMS, haciendo ineficaz el cifrado a nivel de campo del lado del cliente (CSFLE). Este problema se detect\u00f3 durante las pruebas internas y afecta a la versi\u00f3n 1.2.0 del m\u00f3dulo mongodb-client-encryption, que estaba disponible desde el 29 de Enero de 2021 y que fue obsoleto en el Registro NPM el 04 de Febrero de 2021. Esta vulnerabilidad no afecta a las cargas \u00fatiles de tr\u00e1fico de los controladores con servicios clave compatibles con CSFLE de las aplicaciones que residen dentro de los tejidos de trabajo de AWS, GCP y Azure debido a los controles de compensaci\u00f3n en estos entornos. Este problema no afecta a las cargas de trabajo de los controladores que no usan Field Level Encryption"}], "id": "CVE-2021-20327", "lastModified": "2026-09-17T13:57:49.890", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "ADJACENT_NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:A/AC:M/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 5.5, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.2, "source": "cna@mongodb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-25T17:15:28.160", "references": [{"source": "cna@mongodb.com", "tags": ["Vendor Advisory"], "url": "https://jira.mongodb.org/browse/NODE-3125"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://jira.mongodb.org/browse/NODE-3125"}], "sourceIdentifier": "cna@mongodb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "cna@mongodb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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