cilium-cli
is the command line interface to install, manage, and troubleshoot Kubernetes clusters running Cilium. Prior to version 0.13.2,cilium-cli
, when used to configure cluster mesh functionality, can remove the enforcement of user permissions on the etcd
store used to mirror local cluster information to remote clusters. Users who have set up cluster meshes using the Cilium Helm chart are not affected by this issue.
Due to an incorrect mount point specification, the settings specified by the initContainer
that configures etcd
users and their permissions are overwritten when using cilium-cli
to configure a cluster mesh. An attacker who has already gained access to a valid key and certificate for an etcd
cluster compromised in this manner could then modify state in that etcd
cluster.
This issue is patched in cilium-cli
0.13.2. As a workaround, one may use Cilium's Helm charts to create their cluster.