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GO-2022-1071
No affected components available
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.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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