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CVE-2022-39272
October 21, 2022
Flux is an open and extensible continuous delivery solution for Kubernetes. Versions prior to 0.35.0 are subject to a Denial of Service. Users that have permissions to change Flux’s objects, either through a Flux source or directly within a cluster, can provide invalid data to fields ".spec.interval" or ".spec.timeout" (and structured variations of these fields), causing the entire object type to stop being processed. This issue is patched in version 0.35.0. As a workaround, Admission controllers can be employed to restrict the values that can be used for fields ".spec.interval" and ".spec.timeout", however upgrading to the latest versions is still the recommended mitigation.
Affected Packages
github.com/fluxcd/helm-controller (GO):
Affected version(s) >=v0.0.1-alpha.1 <v0.24.0
Fix Suggestion:
Update to version v0.24.0
github.com/fluxcd/image-automation-controller (GO):
Affected version(s) >=v0.1.0 <v0.26.0
Fix Suggestion:
Update to version v0.26.0
github.com/fluxcd/notification-controller (GO):
Affected version(s) >=v0.0.1-alpha.1 <v0.27.0
Fix Suggestion:
Update to version v0.27.0
github.com/fluxcd/source-controller (GO):
Affected version(s) >=v0.0.1-alpha.1 <v0.30.0
Fix Suggestion:
Update to version v0.30.0
github.com/fluxcd/flux2 (GO):
Affected version(s) >=v0.1.0 <v0.35.0
Fix Suggestion:
Update to version v0.35.0
github.com/fluxcd/image-reflector-controller (GO):
Affected version(s) >=v0.1.0 <v0.22.0
Fix Suggestion:
Update to version v0.22.0
github.com/fluxcd/kustomize-controller (GO):
Affected version(s) >=v0.0.1-alpha.1 <v0.29.0
Fix Suggestion:
Update to version v0.29.0
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
LOW
CVSS v3
Base Score:
5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Validation of Specified Quantity in Input
Improper Input Validation
EPSS
Base Score:
0.31