A flaw was found in Keycloak in versions before 10.0.0, where it does not perform the TLS hostname verification while sending emails using the SMTP server. This flaw allows an attacker to perform a man-in-the-middle (MITM) attack.
The product does not validate, or incorrectly validates, a certificate.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Keycloak | Redhat | * | 10.0.0 (excluding) |
| Red Hat Single Sign On 7.3.8 | RedHat | * | |
| Red Hat Single Sign-On 7.3 for RHEL 6 | RedHat | rh-sso7-keycloak-0:4.8.20-1.Final_redhat_00001.1.el6sso | * |
| Red Hat Single Sign-On 7.3 for RHEL 7 | RedHat | rh-sso7-keycloak-0:4.8.20-1.Final_redhat_00001.1.el7sso | * |
| Red Hat Single Sign-On 7.3 for RHEL 8 | RedHat | rh-sso7-keycloak-0:4.8.20-1.Final_redhat_00001.1.el8sso | * |