{ "id": "CVE-2020-36475", "sourceIdentifier": "cve@mitre.org", "published": "2021-08-23T02:15:06.930", "lastModified": "2023-01-11T17:00:44.207", "vulnStatus": "Analyzed", "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). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs." }, { "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). Los c\u00e1lculos llevado a cabo por la funci\u00f3n mbedtls_mpi_exp_mod no est\u00e1n limitados; por lo tanto, el suministro de par\u00e1metros demasiado grandes podr\u00eda conllevar a una denegaci\u00f3n de servicio cuando se generan pares de claves Diffie-Hellman." } ], "metrics": { "cvssMetricV31": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH" }, "exploitabilityScore": 3.9, "impactScore": 3.6 } ], "cvssMetricV2": [ { "source": "nvd@nist.gov", "type": "Primary", "cvssData": { "version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0 }, "baseSeverity": "MEDIUM", "exploitabilityScore": 10.0, "impactScore": 2.9, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false } ] }, "weaknesses": [ { "source": "nvd@nist.gov", "type": "Primary", "description": [ { "lang": "en", "value": "CWE-131" } ] } ], "configurations": [ { "operator": "AND", "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.7.18", "matchCriteriaId": "D1399656-491A-428C-B290-5303A59B7C0E" }, { "vulnerable": true, "criteria": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.8.0", "versionEndExcluding": "2.16.9", "matchCriteriaId": "9DD8F7D9-7E6F-4C31-A38C-D4B246F713FF" }, { "vulnerable": true, "criteria": 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"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", "source": "cve@mitre.org", "tags": [ "Mailing List", "Third Party Advisory" ] } ] }