CVE-2022-46167 – github.com/clastix/capsule

Package

Manager: go
Name: github.com/clastix/capsule
Vulnerable Version: >=0 <0.1.3

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00087 pctl0.25922

Details

Capsule vulnerable to privilege escalation by ServiceAccount deployed in a Tenant Namespace Capsule implements a multi-tenant and policy-based environment in a Kubernetes cluster. 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. With that said, 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 Patches have been released for version 0.1.3 and all users must upgrade to this release. ### Workarounds N.A. ### References N.A. ### For more information If you have any questions or comments about this advisory: * Open an issue in [github.com/clastix/capsule](https://github.com/clastix/capsule) * Reach out on [#capsule](https://kubernetes.slack.com/archives/C03GETTJQRL) channel available on Kubernetes Slack workspace

Metadata

Created: 2022-12-05T23:08:37Z
Modified: 2022-12-06T16:20:39Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-x45c-cvp8-q4fm/GHSA-x45c-cvp8-q4fm.json
CWE IDs: ["CWE-863"]
Alternative ID: GHSA-x45c-cvp8-q4fm
Finding: F006
Auto approve: 1