{"dataType": "CVE_RECORD", "dataVersion": "5.0", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2020-36478", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2022-12-26T00:00:00", "dateReserved": "2021-08-23T00:00:00", "datePublished": "2021-08-23T00:00:00"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2022-12-26T00:00:00"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0"}, {"url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9"}, {"url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18"}, {"url": "https://github.com/ARMmbed/mbedtls/issues/3629"}, {"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf"}, {"name": "[debian-lts-announce] 20211123 [SECURITY] [DLA 2826-1] mbedtls security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html"}, {"name": "[debian-lts-announce] 20221225 [SECURITY] [DLA 3249-1] mbedtls security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}}

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A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid."}, {"lang": "es", "value": "Se ha detectado un problema en Mbed TLS versiones anteriores a 2.25.0 (y versiones anteriores a 2.16.9 LTS y versiones anteriores a 2.7.18 LTS). Una entrada de par\u00e1metros de algoritmo NULL parece id\u00e9ntica a una matriz de REAL (tama\u00f1o cero) y, por tanto, el certificado es considerado v\u00e1lido. Sin embargo, si los par\u00e1metros no coinciden de ninguna manera, el certificado debe considerarse no v\u00e1lido."}], "id": "CVE-2020-36478", "lastModified": "2023-01-11T17:01:16.210", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N", "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": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-08-23T02:15:07.097", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/ARMmbed/mbedtls/issues/3629"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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