CVE-2021-3461 Explained : Impact and Mitigation
Discover the impact of CVE-2021-3461, a Keycloak vulnerability causing logout failures when a request is from an external SAML identity provider. Learn about affected versions and mitigation steps.
A flaw was found in Keycloak where Keycloak may fail to logout a user session if the logout request comes from an external SAML identity provider with the Principal Type set to Attribute [Name].
Understanding CVE-2021-3461
This CVE-2021-3461 vulnerability affects Keycloak and can lead to user session logout failures.
What is CVE-2021-3461?
The vulnerability in Keycloak allows a logout failure when a logout request is initiated by an external SAML identity provider with the Principal Type set to Attribute [Name].
The Impact of CVE-2021-3461
The impact of this vulnerability is that users may not be successfully logged out when attempting to do so, potentially leading to unauthorized access.
Technical Details of CVE-2021-3461
This section provides technical details of the CVE-2021-3461 vulnerability in Keycloak.
Vulnerability Description
The flaw in Keycloak results in the failure to properly log out a user session when a logout request is sent from an external SAML identity provider with the Principal Type set to Attribute [Name].
Affected Systems and Versions
The affected product is the 'rh-sso7-keycloak 9.0.13' version of Keycloak.
Exploitation Mechanism
The vulnerability can be exploited by sending a logout request from an external SAML identity provider with the Principal Type configured as Attribute [Name].
Mitigation and Prevention
In this section, learn about the steps to mitigate and prevent the CVE-2021-3461 vulnerability in Keycloak.
Immediate Steps to Take
Immediately update Keycloak to a version where the logout issue has been addressed. Monitor user sessions for any suspicious activities.
Long-Term Security Practices
Incorporate regular security assessments and audits to identify and address vulnerabilities promptly. Ensure that Keycloak is always updated to the latest secure version.
Patching and Updates
Regularly check for security patches and updates released by Keycloak to address known vulnerabilities and ensure the system's security.