GO-2022-1071
Dashboard / Vulnerabilities / GO-2022-1071
Summary: Denial of service in flux controllers in github.com/fluxcd modules
Details: Flux controllers are vulnerable to a denial of service attack. 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. The issue has two root causes: a) the Kubernetes type metav1.Duration is not fully compatible with the Go type time.Duration as explained in https://github.com/kubernetes/apimachinery/issues/131, and b) a lack of validation within Flux to restrict allowed values.
References: https://github.com/advisories/GHSA-f4p5-x4vc-mh4v, https://github.com/fluxcd/helm-controller/pull/533, https://github.com/fluxcd/image-automation-controller/pull/439, https://github.com/fluxcd/image-reflector-controller/pull/314, https://github.com/fluxcd/kustomize-controller/pull/731, https://github.com/fluxcd/notification-controller/pull/420, https://github.com/fluxcd/source-controller/pull/903, https://github.com/kubernetes/apimachinery#131
Affected packages
Package
Name: github.com/fluxcd/helm-controller/api
Purl: pkg:golang/github.com/fluxcd/helm-controller/api
Affected ranges
Type: SEMVER
Events:
