{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2020-20950","sourceIdentifier":"cve@mitre.org","published":"2021-01-19T13:15:11.887","lastModified":"2026-07-09T00:16:53.360","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure."},{"lang":"es","value":"Un ataque de Bleichenbacher en el relleno PKCS#1 versión v1.5 para RSA en las Bibliotecas de Microchip para Aplicaciones en todas las versiones del 26-11-2018 hasta el 26-11-2018.\u0026#xa0;La vulnerabilidad puede permitir a uno usar el ataque de oráculo de Bleichenbacher para descifrar un texto encriptado cifrado al hacer consultas sucesivas al servidor usando la biblioteca vulnerable, resultando en una divulgación de información remota"}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":5.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:N/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"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-327"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ietf:public_key_cryptography_standards_\\#1:1.5:*:*:*:*:*:*:*","matchCriteriaId":"0563022F-D818-46C3-AF66-E84984174DA8"}]}]},{"operator":"AND","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microchip:microchip_libraries_for_applications:*:*:*:*:*:*:*:*","versionEndIncluding":"2018-11-26","matchCriteriaId":"1D66BCB6-AC9B-4437-A0AB-645A353F2B4E"}]},{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":false,"criteria":"cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*","matchCriteriaId":"387021A0-AF36-463C-A605-32EA7DAC172E"},{"vulnerable":false,"criteria":"cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*","matchCriteriaId":"703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"},{"vulnerable":false,"criteria":"cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*","matchCriteriaId":"A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}],"references":[{"url":"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf","source":"cve@mitre.org","tags":["Technical Description","Third Party Advisory"]},{"url":"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb","source":"cve@mitre.org","tags":["Technical Description","Third Party Advisory"]},{"url":"https://www.microchip.com/mplab/microchip-libraries-for-applications","source":"cve@mitre.org","tags":["Product"]},{"url":"http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Technical Description","Third Party Advisory"]},{"url":"https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Technical Description","Third Party Advisory"]},{"url":"https://www.microchip.com/mplab/microchip-libraries-for-applications","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]}]}}