CVE-2021-3513 : Security Advisory and Response
Discover the details of CVE-2021-3513, a vulnerability in Keycloak enabling brute force attacks despite lockout settings. Learn about impacts, affected versions, and mitigation steps.
A detailed analysis of CVE-2021-3513, a vulnerability found in Keycloak that allows for a brute force attack despite the permanent lockout feature being enabled, leading to a confidentiality risk.
Understanding CVE-2021-3513
This section provides insights into the nature and impact of the CVE-2021-3513 vulnerability in Keycloak.
What is CVE-2021-3513?
CVE-2021-3513 is a security flaw in Keycloak that enables a brute force attack even with the permanent lockout feature activated. The issue arises from an incorrect error message displayed upon entering incorrect credentials, posing a significant risk to confidentiality.
The Impact of CVE-2021-3513
The primary impact of CVE-2021-3513 is on the confidentiality of systems using Keycloak, as unauthorized users can potentially bypass lockout measures through brute force attacks.
Technical Details of CVE-2021-3513
This section outlines the technical aspects of the CVE-2021-3513 vulnerability in Keycloak.
Vulnerability Description
The vulnerability allows malicious actors to conduct brute force attacks on Keycloak systems, compromising confidentiality despite lockout settings.
Affected Systems and Versions
Keycloak versions up to v13.0.0 are affected by this vulnerability, necessitating immediate action for systems within this range.
Exploitation Mechanism
Exploiting CVE-2021-3513 involves leveraging the flaw in Keycloak's error message system to perform brute force attacks and gain unauthorized access.
Mitigation and Prevention
Explore the measures to mitigate the risks associated with CVE-2021-3513 and prevent potential security breaches.
Immediate Steps to Take
Immediately update affected Keycloak instances to version 13.0.0 or above to patch the vulnerability and prevent unauthorized access.
Long-Term Security Practices
Incorporate strong password policies, multi-factor authentication, and regular security audits to enhance Keycloak's overall security posture.
Patching and Updates
Regularly monitor security advisories and apply patches promptly to ensure the latest security fixes are in place to safeguard against known vulnerabilities.