CVE-2021-4437

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Affected by this issue is some unknown functionality of the file packages/json-deserializer/src/JsonDeserializer.ts of the component JSON Mime-Type Handler. The manipulation leads to inefficient regular expression complexity. Upgrading to version 1.1.0 is able to address this issue. The patch is identified as f689404d830cbc1edd6a1018d3334ff5f44dc6a6. It is recommended to upgrade the affected component. VDB-253406 is the identifier assigned to this vulnerability."}, {"lang": "es", "value": "Una vulnerabilidad clasificada como problem\u00e1tica fue encontrada en dbartholomae lambda-middleware frameguard hasta 1.0.4. Una funci\u00f3n desconocida del archivo packages/json-deserializer/src/JsonDeserializer.ts del componente JSON Mime-Type Handler es afectado por esta vulnerabilidad. La manipulaci\u00f3n conduce a una complejidad de expresiones regulares ineficiente. La actualizaci\u00f3n a la versi\u00f3n 1.1.0 puede solucionar este problema. El parche se identifica como f689404d830cbc1edd6a1018d3334ff5f44dc6a6. Se recomienda actualizar el componente afectado. VDB-253406 es el identificador asignado a esta vulnerabilidad."}], "id": "CVE-2021-4437", "lastModified": "2026-06-17T04:19:45.340", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "ADJACENT_NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 2.7, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:A/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 5.1, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "LOW", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 1.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-4437", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-02-21T20:23:53.494867Z", "version": "2.0.3"}}]}, "published": "2024-02-12T20:15:07.993", "references": [{"source": "cna@vuldb.com", "tags": ["Patch"], "url": "https://github.com/dbartholomae/lambda-middleware/commit/f689404d830cbc1edd6a1018d3334ff5f44dc6a6"}, {"source": "cna@vuldb.com", "tags": ["Patch"], "url": "https://github.com/dbartholomae/lambda-middleware/pull/57"}, {"source": "cna@vuldb.com", "tags": ["Release Notes"], "url": "https://github.com/dbartholomae/lambda-middleware/releases/tag/%40lambda-middleware%2Fframeguard_v1.1.0"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required"], "url": "https://vuldb.com/?ctiid.253406"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory"], "url": "https://vuldb.com/?id.253406"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/dbartholomae/lambda-middleware/commit/f689404d830cbc1edd6a1018d3334ff5f44dc6a6"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/dbartholomae/lambda-middleware/pull/57"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://github.com/dbartholomae/lambda-middleware/releases/tag/%40lambda-middleware%2Fframeguard_v1.1.0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required"], "url": "https://vuldb.com/?ctiid.253406"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://vuldb.com/?id.253406"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1333"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

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