CVE-2024-9594: VM images built with Image Builder with some providers use default credentials during builds
First published: Mon Oct 14 2024(Updated: )
A security issue was discovered in the Kubernetes Image Builder versions <= v0.1.37 where default credentials are enabled during the image build process when using the Nutanix, OVA, QEMU or raw providers. The credentials can be used to gain root access. The credentials are disabled at the conclusion of the image build process. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project. Because these images were vulnerable during the image build process, they are affected only if an attacker was able to reach the VM where the image build was happening and used the vulnerability to modify the image at the time the image build was occurring.
Credit: jordan@liggitt.net jordan@liggitt.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| go/github.com/kubernetes-sigs/image-builder | <0.1.38 | 0.1.38 |
| Kubernetes Image Builder | <0.1.38 | |
| <0.1.38 |
Remedy
Rebuild any affected images using a fixed version of Image Builder. Re-deploy the fixed images to any affected VMs.
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://github.com/kubernetes/kubernetes/issues/128007
- https://github.com/kubernetes-sigs/image-builder/pull/1596
- https://groups.google.com/g/kubernetes-security-announce/c/UKJG-oZogfA/m/Lu1hcnHmAQAJ
- https://www.bleepingcomputer.com/news/security/critical-kubernetes-image-builder-flaw-gives-ssh-root-access-to-vms/
- https://www.theregister.com/2024/10/16/critical_kubernetes_image_builder_bug/
- https://nvd.nist.gov/vuln/detail/CVE-2024-9594
- https://github.com/advisories/GHSA-8jpg-62jc-hwhr (Advisory)
- collector/oss-sec
- source/oss-sec
- alias/CVE-2024-9486
- alias/CVE-2024-9594
- agent/first-publish-date
- agent/description
- agent/type
- agent/weakness
- agent/title
- collector/bleeping-computer
- source/BleepingComputer
- collector/the-register
- source/The Register
- agent/author
- agent/references
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/severity
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- agent/tags
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-8jpg-62jc-hwhr
- agent/last-modified-date
- agent/softwarecombine
- collector/nvd-cve
- collector/github-advisory
- agent/event
- agent/epss
- collector/epss-latest
- source/FIRST
- agent/trending
- vendor/kubernetes
- canonical/kubernetes image builder
- package-manager/go