CVE-2022-36049
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.41% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- helm/helm · fluxcd/flux2 · fluxcd/helm-controller
- Source
- security-advisories@github.com
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996Mailing List, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360Mailing List, Third 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 List, Third Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360Mailing List, Third 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.