{"api_version":"1","generated_at":"2026-07-23T08:11:14+00:00","cve":"CVE-2017-11427","urls":{"html":"https://cve.report/CVE-2017-11427","api":"https://cve.report/api/cve/CVE-2017-11427.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-11427","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-11427"},"summary":{"title":"CVE-2017-11427","description":"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.","state":"PUBLIC","assigner":"security@duo.com","published_at":"2019-04-17 14:29:00","updated_at":"2019-10-09 23:22:00"},"problem_types":["CWE-287"],"metrics":[],"references":[{"url":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations","name":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations","refsource":"MISC","tags":["Exploit","Technical Description","Third Party Advisory"],"title":"Duo Finds SAML Vulnerabilities Affecting Multiple Implementations | Duo Security","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.kb.cert.org/vuls/id/475445","name":"https://www.kb.cert.org/vuls/id/475445","refsource":"MISC","tags":["Third Party Advisory","US Government Resource"],"title":"Vulnerability Note VU#475445 - Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-11427","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11427","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Kelby Ludwig of Duo Security","lang":""}],"nvd_cpes":[{"cve_year":"2017","cve_id":"11427","vulnerable":"1","versionEndIncluding":"2.3.0","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"onelogin","cpe5":"pythonsaml","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2017-11427","qid":"982987","title":"Python (pip) Security Update for python-saml (GHSA-j8j8-348v-wfm3)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"security@duo.com","ID":"CVE-2017-11427","STATE":"PUBLIC","TITLE":" Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"PythonSAML","version":{"version_data":[{"affected":"<","version_value":"2.3.0"}]}}]},"vendor_name":"OneLogin"}]}},"credit":[{"lang":"eng","value":"Kelby Ludwig of Duo Security"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","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."}]},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.0"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-287: Improper Authentication"}]}]},"references":{"reference_data":[{"url":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations","refsource":"MISC","name":"https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations"},{"url":"https://www.kb.cert.org/vuls/id/475445","refsource":"MISC","name":"https://www.kb.cert.org/vuls/id/475445"}]},"source":{"discovery":"INTERNAL"}},"nvd":{"publishedDate":"2019-04-17 14:29:00","lastModifiedDate":"2019-10-09 23:22:00","problem_types":["CWE-287"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:onelogin:pythonsaml:*:*:*:*:*:*:*:*","versionEndIncluding":"2.3.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"11427","Ordinal":"108569","Title":"CVE-2017-11427","CVE":"CVE-2017-11427","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"11427","Ordinal":"1","NoteData":"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.","Type":"Description","Title":null},{"CveYear":"2017","CveId":"11427","Ordinal":"2","NoteData":"2019-04-17","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"11427","Ordinal":"3","NoteData":"2019-04-17","Type":"Other","Title":"Modified"}]}}}