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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVwNXctajNnNy13NHd2
Authentication bypass via incorrect XML canonicalization and DOM traversal in saml2-js
Versions of saml2-js prior to 1.12.4 or 2.0.2 are vulnerable to authentication bypass.
The saml2-js library 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.
Security Assertion Markup Language (SAML) is an XML-based markup language for security assertions regarding authentication and permissions, most commonly used for single sign-on (SSO) services.
Some XML DOM traversal and canonicalization APIs may be inconsistent in handling of comments within XML nodes. Incorrect use of these APIs by some SAML libraries results in incorrect parsing of the inner text of XML nodes such that any inner text after the comment is lost prior to cryptographically signing the SAML message. Text after the comment therefore has no impact on the signature on the SAML message.
A remote attacker can modify SAML content for a SAML service provider without invalidating the cryptographic signature, which may allow attackers to bypass primary authentication for the affected SAML service provider
Recommendation
If you use 1.x upgrade to version 1.12.4 or greater
If you use 2.x upgrade to version 2.02 or greater
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVwNXctajNnNy13NHd2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 5 years ago
Updated: almost 2 years ago
CVSS Score: 7.7
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS Percentage: 0.00966
EPSS Percentile: 0.83599
Identifiers: GHSA-5p5w-j3g7-w4wv, CVE-2017-11429
References:
- https://nvd.nist.gov/vuln/detail/CVE-2017-11429
- https://github.com/advisories/GHSA-5p5w-j3g7-w4wv
- https://www.kb.cert.org/vuls/id/475445
- https://www.npmjs.com/advisories/567
- https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
Affected Packages
npm:saml2-js
Dependent packages: 23Dependent repositories: 2,769
Downloads: 329,907 last month
Affected Version Ranges: >= 2.0.0, < 2.0.2, < 1.12.4
Fixed in: 2.0.2, 1.12.4
All affected versions: 0.1.1, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5, 0.2.7, 0.3.0, 0.4.0, 0.5.0, 0.5.1, 0.6.0, 0.6.1, 0.6.2, 0.7.0, 0.8.0, 0.8.1, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.1.0, 1.2.0, 1.3.0, 1.4.0, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.5.0, 1.5.1, 1.6.0, 1.7.0, 1.8.0, 1.8.1, 1.9.0, 1.10.0, 1.11.0, 1.11.1, 1.12.1, 1.12.2, 1.12.3, 2.0.0, 2.0.1
All unaffected versions: 1.12.4, 2.0.2, 2.0.3, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.1.0, 3.0.0, 3.0.1, 3.1.0, 4.0.0, 4.0.1, 4.0.2