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. 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.

Score

CVSS 3.1 7.7 High

Status

Modified - security-advisories@github.com

Published

2022-09-07

Last modified

2025-04-23

Weaknesses

CWE-400, CWE-770

Affected products

• Flux2 (Fluxcd)
• Helm-controller (Fluxcd)
• Helm (Helm)

References

• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996
• https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360
• https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3
• https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh