CVE-2022-46167 Information

Description

Capsule is a multi-tenancy and policy-based framework for Kubernetes. Prior to version 0.1.3 a ServiceAccount deployed in a Tenant Namespace when granted with PATCH capabilities on its own Namespace is able to edit it and remove the Owner Reference breaking the reconciliation of the Capsule Operator and removing all the enforcement like Pod Security annotations Network Policies Limit Range and Resource Quota items. An attacker could detach the Namespace from a Tenant that is forbidding starting privileged Pods using the Pod Security labels by removing the OwnerReference removing the enforcement labels and being able to start privileged containers that would be able to start a generic Kubernetes privilege escalation. Patches have been released for version 0.1.3. No known workarounds are available.

Reference

https://github.com/clastix/capsule/security/advisories/GHSA-x45c-cvp8-q4fm https://github.com/clastix/capsule/commit/1df430e71be8c4778c82eca3459978ad7d0b4b7b https://github.com/clastix/capsule/commit/75525ac19254b0c5111e34d7985e2be7bc8b1ac1 https://github.com/clastix/capsule/releases/tag/v0.1.3