High severity · published Sep 7, 2022
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…
7.5
CVSS
1.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FL
Flux2 · Fluxcd
0.0.17 before 0.32.0 · source: NVD
HE
Helm · Helm
3.0.0 before 3.9.4 · source: NVD
HE
Helm-controller · Fluxcd
0.0.4 before 0.23.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-36049
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-36049
Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996
Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360
Third Party Advisory
https://github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3
Third Party Advisory
https://github.com/helm/helm/security/advisories/GHSA-7hfp-qfw3-5jxh
More from Flux2
9.9
CVE-2022-24817
Flux2 is an open and extensible continuous delivery solution for Kubernetes
8.8
CVE-2022-24877
Flux is an open and extensible continuous delivery solution for Kubernetes
7.8
CVE-2022-36035
Flux is a tool for keeping Kubernetes clusters in sync with sources of configuration (like Git repositories), and automating updates to configuration when there is new code to…
6.5
CVE-2022-24878
Flux is an open and extensible continuous delivery solution for Kubernetes
4.3
CVE-2022-39272
Flux2 vulnerable to Denial of Service due to Improper use of metav1.Duration