Auth bypass in Wizkunde Samlbase

CVE-2018-5387

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.

Vulnerability class: Broken Authentication

EPSS: 0.017 (74.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

References

  • cret@cert.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cret@cert.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
  • cret@cert.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
  • cret@cert.org (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-5387?
CVE-2018-5387 is a high-severity vulnerability in Wizkunde Samlbase, classified under Improper Authentication. CVSS score: 7.5/10. Published 2018-07-24.
How severe is CVE-2018-5387?
High severity. CVSS v3 base score is 7.5 out of 10.