CVE-2017-11428

Multiple SAML libraries may allow authentication bypass via incorrect XML canonicalization and DOM traversal

HIGH
7.7
CVSS Score
Published: April 17, 2019 at 01:59 PM UTC
Updated: June 17, 2026 at 01:01 AM UTC
1 product affected across 1 vendorRuby-SAML

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Severity
HIGH7.7
Exploit prediction
EPSS 2%

Description

OneLogin Ruby-SAML 1.6.0 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.6.0v < 1.6.0
Affected range stops below 1.6.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
x_refsource_MISCThird Party AdvisoryUS Government Resource
https://www.kb.cert.org/vuls/id/475445

CVSS

7.7HIGHduo
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-287

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