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CVE-2022-39272

MEDIUMCVSS 4.3/10EPSS 0.61%

Last modified

CVE-2022-39272 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Flux is an open and extensible continuous delivery solution for Kubernetes. Versions prior to 0.35.0 are subject to a Denial of Service. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

EPSS Probability
0.61%

44.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
FluxcdFlux2>= 0.1.0, < 0.35.0—
FluxcdHelm-Controller>= 0.0.2, < 0.24.0—
FluxcdHelm-Controller0.0.1Alpha1
FluxcdImage-Automation-Controller>= 0.1.0, < 0.26.0—
FluxcdImage-Reflector-Controller>= 0.1.0, < 0.22.0—
FluxcdKustomize-Controller>= 0.0.2, < 0.29.0—
FluxcdKustomize-Controller0.0.1Alpha1
FluxcdNotification-Controller>= 0.0.2, < 0.27.0—
FluxcdNotification-Controller0.0.1Alpha1
FluxcdSource-Controller>= 0.0.2, < 0.30.0—
FluxcdSource-Controller0.0.1Alpha1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-39272?
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.
How severe is CVE-2022-39272?
CVE-2022-39272 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.
How do I fix CVE-2022-39272?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39272?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST