Omni supports importing standalone Talos clusters. During this process, an ImportedClusterSecrets resource is created, which contains the full CA secrets bundle for the cluster being imported. If these secrets are not rotated by the importing actor, an authenticated Omni user with Reader access can read this resource and gain full access to the Talos, Kubernetes and etcd APIs of the cluster.
managementServer.CreateSchematic (internal/backend/grpc/schematics.go) passes the caller-controlled TalosVersion field directly to imageFactoryClient.OverlaysVersions, which embeds it verbatim into a fmt.Sprintf("/version/%s/overlays/official", talosVersion) path template. url.URL.JoinPath resolves any ../ sequences in that path, allowing an authenticated Operator to rewrite the URL path and force Omni to issue HTTP GET requests to unintended paths on the configured image-factory server. Error body content from those unintended endpoints is returned to the caller.
SAML.getSession (internal/pkg/auth/interceptor/saml.go) checks the Used flag on a SAMLAssertion resource and then marks it used in two separate state operations. Because the check and the update are not atomic, concurrent requests carrying the same saml-session token can both observe Used == false, both pass validation, and both return a successful authentication context. An attacker who obtains a valid saml-session token can exploit this window to authenticate as the token's owner …
Omni might leak sensitive information via an API.
A nil pointer dereference vulnerability in the Omni Resource Service allows unauthenticated users to cause a server panic and denial of service by sending empty create/update resource requests through the API endpoints.
This vulnerability creates two distinct attack scenarios based on Omni's IP forwarding configuration. IP Forwarding Disabled (Default) If IP forwarding is disabled, an attacker on a Talos machine can send packets over SideroLink to any listening service on Omni itself (e.g., an internal API). If Omni is running in host networking mode, any service on the host machine could also be targeted. While this is the default configuration, Omni does …