high7.7

CVE-2022-36049

Helm Controller denial of service

Impact

Helm controller is tightly integrated with the Helm SDK. [A vulnerability](https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh) found in the Helm SDK allows for specific data inputs to cause high memory consumption, which in some platforms could cause the controller to panic and stop processing reconciliations. ### Impact 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. ### Credits The initial crash bug was reported by [oss-fuzz](https://github.com/google/oss-fuzz). The Flux Security team produced the first exploit and worked together with the Helm Security team to ensure that both projects were patched timely. ### For more information If you have any questions or comments about this advisory: - Open an issue in any of the affected repositories. - Contact us at the CNCF Flux Channel. ### References - https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360 - https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996 - https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh

Affected packages

Ecosystem	Package	Affected	Fixed in
go	`github.com/fluxcd/helm-controller`	>= 0.0.4, < 0.23.0	0.23.0
go	`github.com/fluxcd/flux2`	>= 0.0.17, < 0.32.0	0.32.0

Affected products

Vendor	Product	Affected versions
Helm	Helm	from 3.0.0 before 3.9.4
Fluxcd	Flux2	from 0.0.17 before 0.32.0
Fluxcd	Helm-Controller	from 0.0.4 before 0.23.0

Weakness classification

CWE-400 CWE-770