Description
A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain (like *.example.com) to restrict which hosts can register or update clients. Due to improper validation, the system accepts any hostname that ends with the specified domain suffix, even if it is not a legitimate subdomain. An attacker who can control the reverse DNS of their connection can bypass these host-based restrictions, potentially allowing unauthorized client modifications.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat Build of Keycloak
Default version status: affected
Red Hat Red Hat Data Grid 8
Default version status: unaffected
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
Default version status: unaffected
Red Hat Red Hat Single Sign-On 7
Default version status: unaffected