An authentication bypass vulnerability exists in multiple WSO2 products when FIDO authentication is enabled. When a user account is deleted, the system does not automatically remove associated FIDO registration data. If a new user account is later created using the same username, the system may associate the new account with the previously registered FIDO device.
This flaw may allow a previously deleted user to authenticate using their FIDO credentials and impersonate the newly created user, resulting in unauthorized access. The vulnerability applies only to deployments that utilize FIDO-based authentication.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Identity_server | Wso2 | 5.10.0 (including) | 5.10.0 (including) |
| Identity_server | Wso2 | 5.11.0 (including) | 5.11.0 (including) |
| Identity_server_as_key_manager | Wso2 | 5.10.0 (including) | 5.10.0 (including) |
| Open_banking_iam | Wso2 | 2.0.0 (including) | 2.0.0 (including) |