Vulnerability Description
Flux2 is a tool for keeping Kubernetes clusters in sync with sources of configuration, and Flux's helm-controller is a Kubernetes operator that allows one to declaratively manage Helm chart releases. Helm controller is tightly integrated with the Helm SDK. A vulnerability found in the Helm SDK that affects flux2 v0.0.17 until v0.32.0 and helm-controller v0.0.4 until v0.23.0 allows for specific data inputs to cause high memory consumption. In some platforms, this could cause the controller to panic and stop processing reconciliations. In a shared cluster multi-tenancy environment, a tenant could create a HelmRelease that makes the controller panic, denying all other tenants from their Helm releases being reconciled. Patches are available in flux2 v0.32.0 and helm-controller v0.23.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Helm | Helm | >= 3.0.0, < 3.9.4 |
| Fluxcd | Flux2 | >= 0.0.17, < 0.32.0 |
| Fluxcd | Helm-Controller | >= 0.0.4, < 0.23.0 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996Mailing ListThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360Mailing ListThird Party Advisory
- https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3Third Party Advisory
- https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxhThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996Mailing ListThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360Mailing ListThird Party Advisory
- https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3Third Party Advisory
- https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxhThird Party Advisory
FAQ
What is CVE-2022-36049?
CVE-2022-36049 is a vulnerability with a CVSS score of 7.7 (HIGH). Flux2 is a tool for keeping Kubernetes clusters in sync with sources of configuration, and Flux's helm-controller is a Kubernetes operator that allows one to declaratively manage Helm chart releases. ...
How severe is CVE-2022-36049?
CVE-2022-36049 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-36049?
Check the references section above for vendor advisories and patch information. Affected products include: Helm Helm, Fluxcd Flux2, Fluxcd Helm-Controller.