CVE-2017-11428 — Vulnerability in ruby-saml — CVE Details

HIGH

Ruby-SAML Improper Authentication vulnerability

Published July 5, 2019Updated November 8, 2023Source: osv

Summary

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.

Advisory Timeline

First published July 5, 2019 (2656 days ago).
Last revised November 8, 2023 — 1586 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler

Update ruby-saml to 1.7.0 or later

gem install ruby-saml -v 1.7.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

Package	Ecosystem	Affected	Fixed In
ruby-saml	rubygems	0.0.5, 0.0.6, 0.0.7, 0.0.8 (+64 more)	1.7.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-287
Improper AuthenticationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.7 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

Frequently Asked Questions

What is CVE-2017-11428?: Ruby-SAML Improper Authentication vulnerability This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.7/10).
How do I check if my project is affected by CVE-2017-11428?: CVE-2017-11428 affects ruby-saml. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2017-11428 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

7.7

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-x2fr-v8wf-8wwv

Related CVEs

CVE-2025-25291
CRITICAL
Ruby SAML allows a SAML authentication bypass due to DOCTYPE handling (parser differential)
CVE-2025-25292
CRITICAL
Ruby SAML allows a SAML authentication bypass due to namespace handling (parser differential)
CVE-2025-66567
CRITICAL
Ruby-saml has a SAML authentication bypass due to namespace handling (parser differential)
CVE-2024-45409
CRITICAL
SAML authentication bypass via Incorrect XPath selector
CVE-2025-66568
CRITICAL
Ruby-saml allows a Libxml2 Canonicalization error to bypass Digest/Signature validation
CVE-2016-5697
HIGH
Ruby-saml allows attackers to perform XML signature wrapping attacks
CVE-2025-25293
HIGH
Ruby SAML allows remote Denial of Service (DoS) with compressed SAML responses
CVE-2025-54572
MEDIUM
Ruby SAML DOS vulnerability with large SAML response

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies