CVE-2023-28114
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.
Does this matter?
Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own.
Description
`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.
- CVSS 3.1
- 4.1 MEDIUMCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
- EPSS
- 0.19% probability · 9th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-280, CWE-755
- Affected
- cilium/cilium-cli
- Source
- security-advisories@github.com
References
- https://artifacthub.io/packages/helm/cilium/ciliumProduct
- https://github.com/cilium/cilium-cli/commit/fb1427025764e1eebc4a7710d902c4f22cae2610Patch
- https://github.com/cilium/cilium-cli/releases/tag/v0.13.2Release Notes
- https://github.com/cilium/cilium-cli/security/advisories/GHSA-6f27-3p6c-p5jcVendor Advisory
- https://artifacthub.io/packages/helm/cilium/ciliumProduct
- https://github.com/cilium/cilium-cli/commit/fb1427025764e1eebc4a7710d902c4f22cae2610Patch
- https://github.com/cilium/cilium-cli/releases/tag/v0.13.2Release Notes
- https://github.com/cilium/cilium-cli/security/advisories/GHSA-6f27-3p6c-p5jcVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.