Skip to content

Keycloak Authentication Error

Moderate severity GitHub Reviewed Published May 13, 2022 to the GitHub Advisory Database • Updated Oct 6, 2023

Package

maven org.keycloak:keycloak-saml-adapter-core (Maven)

Affected versions

< 4.4.0.Final

Patched versions

4.4.0.Final
maven org.keycloak:keycloak-services (Maven)
< 4.4.0.Final
4.4.0.Final

Description

It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.

References

Published by the National Vulnerability Database Aug 1, 2018
Published to the GitHub Advisory Database May 13, 2022
Reviewed Jul 21, 2023
Last updated Oct 6, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS score

0.087%
(38th percentile)

Weaknesses

CVE ID

CVE-2018-10894

GHSA ID

GHSA-xvv8-8wh9-9fh2

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.