Vulnerability Description
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 deploy. Flux CLI allows users to deploy Flux components into a Kubernetes cluster via command-line. The vulnerability allows other applications to replace the Flux deployment information with arbitrary content which is deployed into the target Kubernetes cluster instead. The vulnerability is due to the improper handling of user-supplied input, which results in a path traversal that can be controlled by the attacker. Users sharing the same shell between other applications and the Flux CLI commands could be affected by this vulnerability. In some scenarios no errors may be presented, which may cause end users not to realize that something is amiss. A safe workaround is to execute Flux CLI in ephemeral and isolated shell environments, which can ensure no persistent values exist from previous processes. However, upgrading to the latest version of the CLI is still the recommended mitigation strategy.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Fluxcd | Flux2 | >= 0.21.0, < 0.32.0 |
Related Weaknesses (CWE)
References
- https://github.com/fluxcd/flux2/releases/tag/v0.32.0Release NotesThird Party Advisory
- https://github.com/fluxcd/flux2/security/advisories/GHSA-xwf3-6rgv-939rMitigationThird Party Advisory
- https://github.com/fluxcd/flux2/releases/tag/v0.32.0Release NotesThird Party Advisory
- https://github.com/fluxcd/flux2/security/advisories/GHSA-xwf3-6rgv-939rMitigationThird Party Advisory
FAQ
What is CVE-2022-36035?
CVE-2022-36035 is a vulnerability with a CVSS score of 7.7 (HIGH). 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 deploy. Flux CLI allows ...
How severe is CVE-2022-36035?
CVE-2022-36035 has been rated HIGH with a CVSS base score of 7.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-36035?
Check the references section above for vendor advisories and patch information. Affected products include: Fluxcd Flux2.