Vulnerability in Fluxcd Flux2
CVE-2022-39272
Flux is an open and extensible continuous delivery solution for Kubernetes. Versions prior to 0.35.0 are subject to a Denial of Service. Users that have permissions to change Flux’s objects, either through a Flux source or directly within a cluster, can provide invalid data to fields `.spec.interval` or `.spec.timeout` (and structured variations of these fields), causing the entire object type to stop being processed. This issue is patched in version 0.35.0. As a workaround, Admission controllers can be employed to restrict the values that can be used for fields `.spec.interval` and `.spec.timeout`, however upgrading to the latest versions is still the recommended mitigation.
EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L.
Affected products
- Fluxcd Flux2 — versions < 0.35.0
- Fluxcd Helm-controller — versions 0.0.1
- Fluxcd Image-automation-controller
- Fluxcd Image-reflector-controller
- Fluxcd Kustomize-controller — versions 0.0.1
- Fluxcd Notification-controller — versions 0.0.1
- Fluxcd Source-controller — versions 0.0.1
Weakness classification (CWE)
References
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2022-39272?
- CVE-2022-39272 is a medium-severity vulnerability in Fluxcd Flux2, classified under Improper Validation of Specified Quantity in Input. CVSS score: 5.0/10. Published 2022-10-22.
- How severe is CVE-2022-39272?
- Medium severity. CVSS v3 base score is 5.0 out of 10.