CVE-2022-3916 Explained : Impact and Mitigation
Learn about CVE-2022-3916, a vulnerability in Keycloak enabling session takeover with OIDC offline refresh tokens. Find affected systems, impacts, and mitigation steps.
A detailed overview of CVE-2022-3916, a vulnerability related to session takeover with OIDC offline refresh tokens in Keycloak.
Understanding CVE-2022-3916
This section provides insights into the nature and impact of the CVE-2022-3916 vulnerability.
What is CVE-2022-3916?
CVE-2022-3916 involves a flaw in the offline_access scope in Keycloak, potentially enabling attackers to take over sessions with OIDC offline refresh tokens.
The Impact of CVE-2022-3916
The vulnerability poses a moderate risk, particularly affecting users of shared computers due to session validation issues and the reuse of session IDs.
Technical Details of CVE-2022-3916
Explore the specifics of the CVE-2022-3916 vulnerability.
Vulnerability Description
The flaw in Keycloak allows attackers to resolve user sessions and obtain tokens for authenticated users when utilizing the refresh token.
Affected Systems and Versions
- Keycloak Version 20.0.2: Unaffected
- Red Hat Single Sign-On 7 Version 7.6: Multiple versions affected
- Red Hat Single Sign-On 7.6 for RHEL 7: Versions 0:18.0.3-1 and 0:18.0.6-1 affected
- Red Hat Single Sign-On 7.6 for RHEL 8: Versions 0:18.0.3-1 and 0:18.0.6-1 affected
- Red Hat Single Sign-On 7.6 for RHEL 9: Versions 0:18.0.3-1 and 0:18.0.6-1 affected
- RHEL-8 based Middleware Containers: Version 7.6-15 affected
Exploitation Mechanism
Attackers exploit the lack of proper session validation in Keycloak to take over user sessions using OIDC offline refresh tokens.
Mitigation and Prevention
Learn how to address and prevent the CVE-2022-3916 vulnerability.
Immediate Steps to Take
- Users should clear cookies regularly to reduce the risk of session takeover.
- Employ security best practices to protect user authentication sessions.
Long-Term Security Practices
- Implement regular security audits to identify and mitigate vulnerabilities in Keycloak.
- Educate users on secure session management practices.
Patching and Updates
- Apply the necessary updates provided by Red Hat to address the CVE-2022-3916 vulnerability.