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CVE-2017-11427 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.7 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations	CVE	ExploitTechnical DescriptionThird Party Advisory
https://www.kb.cert.org/vuls/id/475445	CVE	Third Party AdvisoryUS Government Resource
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations	[email protected]	ExploitTechnical DescriptionThird Party Advisory
https://www.kb.cert.org/vuls/id/475445	[email protected]	Third Party AdvisoryUS Government Resource

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-287	Improper Authentication	[email protected]
CWE-287	Improper Authentication	[email protected]

Affected Products

Product	Versions
onelogin pythonsaml	<= 2.3.0
CPE cpe:2.3:a:onelogin:pythonsaml:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 9, 2019	CVE Modified	[email protected]
Apr 18, 2019	Initial Analysis	[email protected]