CVE-2019-11255: Kubernetes CSI volume snapshot, cloning and resizing features can result in unauthorized volume data access or mutation
First published: Thu Nov 14 2019(Updated: )
A security issue has been found in the kubernetes-csi external-provisioner, external-snapshotter, and external-resizer sidecars that impacts most versions of the sidecars bundled in Container Storage Interface (CSI) drivers. The vulnerabilities are medium severity and can result in unauthorized volume data access or mutation when using CSI volume snapshot, cloning or resizing features in Kubernetes. Upgrading your CSI drivers to the fixed sidecars is recommended. Upstream Issue: <a href="https://github.com/kubernetes/kubernetes/issues/85233">https://github.com/kubernetes/kubernetes/issues/85233</a> External Reference: <a href="https://groups.google.com/forum/#!topic/kubernetes-security-announce/aXiYN0q4uIw">https://groups.google.com/forum/#!topic/kubernetes-security-announce/aXiYN0q4uIw</a>
Credit: jordan@liggitt.net jordan@liggitt.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Kubernetes External-provisioner | >=0.4.1<=0.4.2 | |
| Kubernetes External-provisioner | >=1.0.0<=1.0.1 | |
| Kubernetes External-provisioner | >=1.1.0<=1.2.1 | |
| Kubernetes External-provisioner | =1.3.0 | |
| Kubernetes External-resizer | >=0.1.0<=0.2.0 | |
| Kubernetes External-snapshotter | >=0.4.0<=0.4.1 | |
| Kubernetes External-snapshotter | >=1.0.0<=1.0.1 | |
| Kubernetes External-snapshotter | >=1.1.0<=1.2.1 | |
| Redhat Openshift Container Platform | =3.11 | |
| Redhat Openshift Container Platform | =4.1 | |
| Redhat Openshift Container Platform | =4.2 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2019-11255
- https://github.com/kubernetes/kubernetes/issues/85233
- https://access.redhat.com/errata/RHSA-2019:4054
- https://access.redhat.com/errata/RHSA-2019:4096
- https://access.redhat.com/errata/RHSA-2019:4099
- https://access.redhat.com/errata/RHSA-2019:4225
- https://groups.google.com/forum/#!topic/kubernetes-security-announce/aXiYN0q4uIw
- https://security.netapp.com/advisory/ntap-20200810-0003/
- https://github.com/advisories/GHSA-f4w6-3rh6-6q4q (Advisory)
- https://access.redhat.com/support/offerings/techpreview
- https://access.redhat.com/security/cve/cve-2019-11255
- https://bugzilla.redhat.com/show_bug.cgi?id=1772727
- https://groups.google.com/forum/#%21topic/kubernetes-security-announce/aXiYN0q4uIw
Frequently Asked Questions
What is CVE-2019-11255?
CVE-2019-11255 is a vulnerability that allows unauthorized access or volume mutation in Kubernetes CSI sidecar containers for external-provisioner, external-snapshotter, and external-resizer.
What is the severity of CVE-2019-11255?
CVE-2019-11255 has a severity rating of 6.5, which is considered medium.
How does CVE-2019-11255 affect Kubernetes CSI sidecar containers?
CVE-2019-11255 affects Kubernetes CSI sidecar containers for external-provisioner, external-snapshotter, and external-resizer, allowing unauthorized data access or volume mutation.
Which versions of external-provisioner are affected by CVE-2019-11255?
Versions <v0.4.3, <v1.0.2, v1.1, <v1.2.2, and <v1.3.1 of external-provisioner are affected by CVE-2019-11255.
What can I do to mitigate the vulnerability?
To mitigate CVE-2019-11255, update external-provisioner, external-snapshotter, and external-resizer to the recommended versions.
- collector/github-advisory-latest
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- version/kubernetes external-provisioner/1.0.0
- version/kubernetes external-provisioner/1.0.1
- version/kubernetes external-provisioner/1.1.0
- version/kubernetes external-provisioner/1.2.1
- version/kubernetes external-provisioner/1.3.0
- canonical/kubernetes external-resizer
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- version/kubernetes external-snapshotter/0.4.1
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- vendor/redhat
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