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CVE-2018-5387: Improper Verification of Cryptographic Signature

May 13, 2022 (updated July 19, 2023)

Wizkunde SAMLBase 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.

References

  • duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations
  • github.com/GoGentoOSS/SAMLBase/commit/482cdf8c090e0f1179073034ebcb609ac7c3f5b3
  • github.com/GoGentoOSS/SAMLBase/issues/3
  • github.com/advisories/GHSA-7gh2-8q93-87hp
  • nvd.nist.gov/vuln/detail/CVE-2018-5387
  • www.kb.cert.org/vuls/id/475445

Code Behaviors & Features

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Affected versions

All versions before 1.2.7

Fixed versions

  • 1.2.7

Solution

Upgrade to version 1.2.7 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Learn more about CVSS

Weakness

  • CWE-347: Improper Verification of Cryptographic Signature

Source file

packagist/gogentooss/samlbase/CVE-2018-5387.yml

Spotted a mistake? Edit the file on GitLab.

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