Skip to content

Forced Logout in keycloak-connect

Moderate severity GitHub Reviewed Published Jun 13, 2019 to the GitHub Advisory Database • Updated Feb 1, 2023

Package

npm keycloak-connect (npm)

Affected versions

< 4.8.3

Patched versions

4.8.3

Description

Versions of keycloak-connect prior to 4.4.0 are vulnerable to Forced Logout. The package fails to validate JWT signatures on the /k_logout route, allowing attackers to logout users and craft malicious JWTs with NBF values that prevent user access indefinitely.

Recommendation

Upgrade to version 4.4.0 or later.

References

Published by the National Vulnerability Database Jun 12, 2019
Reviewed Jun 13, 2019
Published to the GitHub Advisory Database Jun 13, 2019
Last updated Feb 1, 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
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

EPSS score

0.042%
(5th percentile)

Weaknesses

CVE ID

CVE-2019-10157

GHSA ID

GHSA-68hw-vfh7-xvg8

Source code

No known source code
Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.