CVE-2022-24878 – github.com/fluxcd/flux2

Package

Manager: go
Name: github.com/fluxcd/flux2
Vulnerable Version: >=0.19.0 <0.29.0

Severity

Level: High

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

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

EPSS: 0.00294 pctl0.52287

Details

Improper path handling in Kustomization files allows for denial of service The kustomize-controller enables the use of Kustomize’s functionality when applying Kubernetes declarative state onto a cluster. A malicious user can use a specially crafted `kustomization.yaml` to cause Denial of Service at controller level. In multi-tenancy deployments this can lead to multiple tenants not being able to apply their Kustomizations until the malicious `kustomization.yaml` is removed and the controller restarted. ### Impact Within the affected versions, users with write access to a Flux source are able to craft a malicious `kustomization.yaml` file which causes the controller to enter an endless loop. ### Patches This vulnerability was fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0 released on 2022-04-20. The changes introduce better handling of Kustomization files blocking references that could lead to endless loops. ### Credits The Flux engineering team found and patched this vulnerability. ### For more information If you have any questions or comments about this advisory please open an issue in the [flux2 repository](http://github.com/fluxcd/flux2).

Metadata

Created: 2022-05-20T16:58:38Z
Modified: 2022-05-20T16:58:38Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-7pwf-jg34-hxwp/GHSA-7pwf-jg34-hxwp.json
CWE IDs: ["CWE-674"]
Alternative ID: GHSA-7pwf-jg34-hxwp
Finding: F067
Auto approve: 1