CVE-2018-10912 : Vulnerability Insights and Analysis

Keycloak before version 4.0.0.final is vulnerable to an infinite loop in session replacement, potentially leading to a Denial of Service attack.

Understanding CVE-2018-10912

This CVE involves a security vulnerability in Keycloak that could be exploited by malicious users to cause a Denial of Service attack.

What is CVE-2018-10912?

The vulnerability in Keycloak versions prior to 4.0.0.final allows for an infinite loop in session replacement, particularly in Keycloak clusters with multiple nodes.

The Impact of CVE-2018-10912

CVSS Score: 4.4 (Medium Severity)
Attack Vector: Network
Attack Complexity: High
Availability Impact: High
The vulnerability could be exploited by authenticated users to trigger a Denial of Service attack on the server.

Technical Details of CVE-2018-10912

Keycloak's vulnerability and its implications.

Vulnerability Description

The issue arises from the mishandling of expired session replacements, causing a continuous loop that could be abused by attackers.

Affected Systems and Versions

Affected Product: Keycloak
Affected Version: Keycloak 4.0.0.Final

Exploitation Mechanism

Malicious authenticated users with authentication privileges can exploit the vulnerability to initiate a Denial of Service attack.

Mitigation and Prevention

Steps to address and prevent the CVE-2018-10912 vulnerability.

Immediate Steps to Take

Update Keycloak to version 4.0.0.final or later to mitigate the vulnerability.
Monitor and restrict access to Keycloak to prevent unauthorized exploitation.

Long-Term Security Practices

Regularly update and patch Keycloak to address any security vulnerabilities promptly.
Implement network security measures to detect and prevent potential attacks.

Patching and Updates

Stay informed about security advisories and updates from Keycloak to apply patches as soon as they are available.