Path Traversal in Fluxcd Flux2
CVE-2022-24877
Flux is an open and extensible continuous delivery solution for Kubernetes. Path Traversal in the kustomize-controller via a malicious `kustomization.yaml` allows an attacker to expose sensitive data from the controller’s pod filesystem and possibly privilege escalation in multi-tenancy deployments. Workarounds include automated tooling in the user's CI/CD pipeline to validate `kustomization.yaml` files conform with specific policies. This vulnerability is fixed in kustomize-controller v0.24.0 and included in flux2 v0.29.0.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.011 (63.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Fluxcd Flux2 — versions flux2 < v0.29.0, kustomize-controller < v0.24.0
- Fluxcd Kustomize-controller
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-24877?
- CVE-2022-24877 is a critical-severity vulnerability in Fluxcd Flux2, classified under Path Traversal. CVSS score: 9.9/10. Published 2022-05-06.
- How severe is CVE-2022-24877?
- Critical severity. CVSS v3 base score is 9.9 out of 10.