A flaw was found in Keycloaks client registration service. A remote attacker, possessing a previously issued Registration Access Token (RAT), could exploit this vulnerability to re-enable a client that an administrator had explicitly disabled. This bypasses security controls, allowing the attacker to reset the clients secret and potentially regain privileged API access. The primary impact includes unauthorized information disclosure and potential integrity compromise.
Weakness
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Build_of_keycloak | Redhat | 26.4 (including) | 26.4.13 (excluding) |
| Build_of_keycloak | Redhat | 26.6 (including) | 26.6.4 (excluding) |
| Red Hat build of Keycloak 26.4 | RedHat | rhbk/keycloak-operator-bundle:26.4.13-1 | * |
| Red Hat build of Keycloak 26.4 | RedHat | rhbk/keycloak-rhel9:26.4-19 | * |
| Red Hat build of Keycloak 26.4 | RedHat | rhbk/keycloak-rhel9-operator:26.4-19 | * |
| Red Hat build of Keycloak 26.4.13 | RedHat | rhbk/keycloak-rhel9 | * |
| Red Hat build of Keycloak 26.6 | RedHat | rhbk/keycloak-operator-bundle:26.6.4-2 | * |
| Red Hat build of Keycloak 26.6 | RedHat | rhbk/keycloak-rhel9:26.6-8 | * |
| Red Hat build of Keycloak 26.6 | RedHat | rhbk/keycloak-rhel9-operator:26.6-8 | * |
| Red Hat build of Keycloak 26.6.4 | RedHat | rhbk/keycloak-rhel9 | * |