It was found that Keycloaks SAML broker, versions up to 6.0.1, did not verify missing message signatures. If an attacker modifies the SAML Response and removes the sections, the message is still accepted, and the message can be modified. An attacker could use this flaw to impersonate other users and gain access to sensitive information.
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Keycloak | Redhat | * | 6.0.1 (including) |
| Single_sign-on | Redhat | 7.0 (including) | 7.0 (including) |
| Single_sign-on | Redhat | 7.3.3 (including) | 7.3.3 (including) |
| Red Hat Runtimes Spring Boot 2.1.12 | RedHat | keycloak | * |
| Red Hat Single Sign-On 7.3.3 zip | RedHat | keycloak | * |
| Text-Only RHOAR | RedHat | * |