CVE-2019-16748

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*", "matchCriteriaId": "FC837E7F-7882-4F06-880D-6A318FF0C73D", "versionEndIncluding": "4.1.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In wolfSSL through 4.1.0, there is a missing sanity check of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer over-read in CheckCertSignature_ex in wolfcrypt/src/asn.c."}, {"lang": "es", "value": "En wolfSSL versiones hasta 4.1.0, se presenta una falta de comprobaci\u00f3n de saneamiento de los accesos a la memoria en el an\u00e1lisis de los datos del certificado ASN.1 durante el protocolo de negociaci\u00f3n (handshaking). Espec\u00edficamente, se presenta una lectura excesiva de b\u00fafer en la regi\u00f3n heap de la memoria de un byte en la funci\u00f3n CheckCertSignature_ex en el archivo wolfcrypt/src/asn.c."}], "id": "CVE-2019-16748", "lastModified": "2026-06-17T02:22:43.423", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 7.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-09-24T13:15:10.660", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/wolfSSL/wolfssl/issues/2459"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/wolfSSL/wolfssl/issues/2459"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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