The vulnerability (CVE-2025-XXXX) in Keycloak’s authorization module (org.keycloak.authorization) allows attackers to bypass mandatory security measures like two-factor authentication (2FA). The flaw occurs due to improper validation of required actions during user authentication. Attackers can manipulate authorization requests, skipping enforced security steps. This happens when Keycloak fails to verify if a user completed all mandatory actions before granting access. The exploit leverages misconfigured policy checks in the authorization flow, enabling unauthorized access despite 2FA enforcement.
DailyCVE Form:
Platform: Keycloak
Version: Affects multiple
Vulnerability: 2FA Bypass
Severity: Moderate
Date: 2025-04-29
What Undercode Say:
Exploitation:
- Craft a malicious auth request omitting 2FA validation.
2. Abuse policy evaluation gaps in `org.keycloak.authorization`.
3. Use intercepted tokens to bypass post-login checks.
Protection:
1. Patch Keycloak to latest version.
2. Enforce strict policy checks in `authorization` module.
3. Monitor logs for skipped required actions.
Analytics:
- Attack Vector: Network-based (low complexity).
- Privilege Escalation Risk: Medium (partial auth bypass).
Commands:
Check Keycloak version: curl -v http://keycloak-host:8080/auth/realms/master | grep "Keycloak" Patch via JBoss CLI: patch apply --patch-id=KEYCLOAK-XXXXX
Code Snippet (Mitigation):
// Enforce 2FA in PolicyEvaluator:
if (user.hasRequiredAction("CONFIGURE_TOTP")) {
throw new PolicyEvaluationException("2FA not configured");
}
Log Monitoring:
grep "REQUIRED_ACTION_BYPASS" /var/log/keycloak/server.log
References:
- GHSA-5jfq-x6xp-7rw2 (Withdrawn duplicate).
- Keycloak JIRA: KEYCLOAK-XXXXX.
Impact:
- Compromised accounts without 2FA.
- Potential lateral movement in federated systems.
Note: Advisory withdrawn due to duplication; verify patches independently.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
