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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*", "matchCriteriaId": "FDC39E29-CA8E-4370-BBC4-332BFCCF46B1", "versionEndIncluding": "4.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or --enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length."}, {"lang": "es", "value": "wolfSSL y wolfCrypt versi\u00f3n 4.0.0 y anteriores (cuando se configuran sin --enable-fpecc, --enable-sp o --enable-sp-math) contienen un canal lateral de temporizaci\u00f3n en la generaci\u00f3n de firmas ECDSA. Esto permite a un atacante local, capaz de medir con precisi\u00f3n la duraci\u00f3n de las operaciones de firma, inferir informaci\u00f3n acerca del nonces utilizado y potencialmente montar un ataque de red para recuperar la clave privada usada. El problema se presenta porque la multiplicaci\u00f3n escalar del archivo ecc.c podr\u00eda perder la longitud de bits."}], "id": "CVE-2019-13628", "lastModified": "2019-10-10T14:26:33.680", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "HIGH", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 1.2, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:H/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 1.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-10-03T14:15:11.057", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2019/10/02/2"}, {"source": "cve@mitre.org", "tags": ["Technical Description", "Third Party Advisory"], "url": "https://eprint.iacr.org/2011/232.pdf"}, {"source": "cve@mitre.org", "tags": ["Product"], "url": "https://minerva.crocs.fi.muni.cz/"}, {"source": "cve@mitre.org", "tags": ["Technical Description", "Third Party Advisory"], "url": "https://tches.iacr.org/index.php/TCHES/article/view/7337"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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