CVE-2020-1723 : Security Advisory and Response

Keycloak Gatekeeper (Louketo) versions 6.0.1 and 7.0.0 are vulnerable to abuse of the logout endpoint, allowing redirection of logged-in users to arbitrary web pages. This CVE was published on January 28, 2021.

Understanding CVE-2020-1723

Key insights into the security vulnerability and its implications.

What is CVE-2020-1723?

CVE-2020-1723 identifies a flaw in Keycloak Gatekeeper where the logout endpoint can be manipulated to redirect authenticated users to unauthorized websites.

The Impact of CVE-2020-1723

Exploitation of this vulnerability could lead to unauthorized redirects of users to malicious websites, potentially exposing sensitive data or facilitating phishing attacks.

Technical Details of CVE-2020-1723

Insights into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in Keycloak Gatekeeper allows attackers to exploit the logout endpoint, redirecting authenticated users to arbitrary web pages.

Affected Systems and Versions

Product: Keycloak Gatekeeper
Vendor: Louketo
Affected Versions: 6.0.1, 7.0.0

Exploitation Mechanism

Attackers can manipulate the logout endpoint to redirect authenticated users to unauthorized websites, potentially leading to security breaches.

Mitigation and Prevention

Measures to address and prevent exploitation of CVE-2020-1723.

Immediate Steps to Take

Monitor and restrict access to the logout endpoint.
Update Keycloak Gatekeeper to a patched version.

Long-Term Security Practices

Implement multi-factor authentication for additional security.
Regularly audit and monitor access and authentication mechanisms.

Patching and Updates

Apply the latest patches and version updates provided by Keycloak Gatekeeper to address the vulnerability.