CVE-2021-43398

{"id": "CVE-2021-43398", "cveTags": [{"tags": ["disputed"], "sourceIdentifier": "cve@mitre.org"}], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2021-11-04T21:15:09.520", "references": [{"url": "https://cryptopp.com", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/weidai11/cryptopp/issues/1080", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://cryptopp.com", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/weidai11/cryptopp/issues/1080", "tags": ["Exploit", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://github.com/weidai11/cryptopp/issues/1080#issuecomment-996492222", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-203"}]}], "descriptions": [{"lang": "en", "value": "Crypto++ (aka Cryptopp) 8.6.0 and earlier contains a timing leakage in MakePublicKey(). There is a clear correlation between execution time and private key length, which may cause disclosure of the length information of the private key. This might allow attackers to conduct timing attacks. NOTE: this report is disputed by the vendor and multiple third parties. The execution-time differences are intentional. A user may make a choice of a longer key as a tradeoff between strength and performance. In making this choice, the amount of information leaked to an adversary is of infinitesimal value"}, {"lang": "es", "value": "** EN DISPUTA ** Crypto++ (tambi\u00e9n se conoce como Cryptopp) versiones 8.6.0 y anteriores, contienen un filtrado de tiempo en la funci\u00f3n MakePublicKey(). Se presenta una clara correlaci\u00f3n entre el tiempo de ejecuci\u00f3n y la longitud de la clave privada, que puede causar una divulgaci\u00f3n de la informaci\u00f3n de la longitud de la clave privada. Esto podr\u00eda permitir a atacantes conducir ataques de tiempo. NOTA: este informe es discutido por el vendedor y por m\u00faltiples terceros. Las diferencias de tiempo de ejecuci\u00f3n son intencionadas. Un usuario puede elegir una clave m\u00e1s larga como compensaci\u00f3n entre la fuerza y el rendimiento. Al hacer esta elecci\u00f3n, la cantidad de informaci\u00f3n filtrada a un adversario es de valor infinitesimal"}], "lastModified": "2024-11-21T06:29:09.903", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:cryptopp:crypto\\+\\+:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "38083732-7F2F-45F1-B773-8BD7A039F08B", "versionEndIncluding": "8.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}