CVE Vulnerability

CVE-2022-24817

Flux2 is an open and extensible continuous delivery solution for Kubernetes. Flux2 versions between 0.1.0 and 0.29.0, helm-controller 0.1.0 to v0.19.0, and kustomize-controller 0.1.0 to v0.23.0 are vulnerable to Code Injection via malicious Kubeconfig. In multi-tenancy deployments this can also lead to privilege escalation if the controller's service account has elevated permissions. Workarounds include disabling functionality via Validating Admission webhooks by restricting users from setting the `spec.kubeConfig` field in Flux `Kustomization` and `HelmRelease` objects. Additional mitigations include applying restrictive AppArmor and SELinux profiles on the controller’s pod to limit what binaries can be executed. This vulnerability is fixed in kustomize-controller v0.23.0 and helm-controller v0.19.0, both included in flux2 v0.29.0

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.9 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.1 / Impact : 6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://github.com/fluxcd/flux2/security/advisories/GHSA-vvmq-fwmg-2gjc Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:fluxcd:kustomize-controller:*:*:*:*:*:*:*:*
cpe:2.3:a:fluxcd:helm-controller:*:*:*:*:*:*:*:*
cpe:2.3:a:fluxcd:flux2:*:*:*:*:*:*:*:*
Information

Published : 2022-05-06 12:15

Updated : 2022-05-16 07:07

NVD link : CVE-2022-24817

Mitre link : CVE-2022-24817

Products Affected
No products.
CWE
CWE-94