{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2017-11427","sourceIdentifier":"security@duo.com","published":"2019-04-17T14:29:00.247","lastModified":"2026-06-17T01:01:47.823","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"OneLogin PythonSAML 2.3.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers."},{"lang":"es","value":"OneLogin PythonSAML versión 2.3.0 y versiones anteriores pueden utilizar incorrectamente los resultados de las API de automatización y canonicalización de XML DOM de tal manera que un atacante pueda manipular los datos SAML sin invalidar la firma criptográfica, lo que permite que el ataque omita la identificación de los proveedores de servicio SAML"}],"affected":[{"source":"security@duo.com","affectedData":[{"vendor":"OneLogin","product":"PythonSAML","versions":[{"version":"unspecified","lessThan":"2.3.0","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV30":[{"source":"security@duo.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","baseScore":7.7,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.1,"impactScore":4.0},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","baseScore":7.5,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"HIGH","exploitabilityScore":10.0,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security@duo.com","type":"Secondary","description":[{"lang":"en","value":"CWE-287"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-287"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:onelogin:pythonsaml:*:*:*:*:*:*:*:*","versionEndIncluding":"2.3.0","matchCriteriaId":"3804188A-61A9-4CF7-A57C-D6329D14A3A8"}]}]}],"references":[{"url":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations","source":"security@duo.com","tags":["Exploit","Technical Description","Third Party Advisory"]},{"url":"https://www.kb.cert.org/vuls/id/475445","source":"security@duo.com","tags":["Third Party Advisory","US Government Resource"]},{"url":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Technical Description","Third Party Advisory"]},{"url":"https://www.kb.cert.org/vuls/id/475445","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","US Government Resource"]}]}}