A flaw was found in Keycloak before version 12.0.0 where it is possible to update the users metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.
Weakness
The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Keycloak | Redhat | * | 12.0.0 (excluding) |
| Red Hat Single Sign-On 7.4 for RHEL 6 | RedHat | rh-sso7-keycloak-0:9.0.10-1.redhat_00001.1.el6sso | * |
| Red Hat Single Sign-On 7.4 for RHEL 7 | RedHat | rh-sso7-keycloak-0:9.0.10-1.redhat_00001.1.el7sso | * |
| Red Hat Single Sign-On 7.4 for RHEL 8 | RedHat | rh-sso7-keycloak-0:9.0.10-1.redhat_00001.1.el8sso | * |
| Text-Only RHSSO | RedHat | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/104.html
- https://cwe.mitre.org/data/definitions/470.html
- https://cwe.mitre.org/data/definitions/69.html