Vulnerability Description
The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over the network, and kubectl unpacks it on the user’s machine. If the tar binary in the container is malicious, it could run any code and output unexpected, malicious results. An attacker could use this to write files to any path on the user’s machine when kubectl cp is called, limited only by the system permissions of the local user. Kubernetes affected versions include versions prior to 1.13.9, versions prior to 1.14.5, versions prior to 1.15.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | Kubernetes | >= 1.0.0, <= 1.12.10 |
| Redhat | Openshift Container Platform | 3.9 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHBA-2019:2794Third Party Advisory
- https://access.redhat.com/errata/RHBA-2019:2816Third Party Advisory
- https://access.redhat.com/errata/RHBA-2019:2824Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3239Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3811Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/80984PatchThird Party Advisory
- https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmPatchThird Party Advisory
- https://security.netapp.com/advisory/ntap-20190919-0003/Third Party Advisory
- https://access.redhat.com/errata/RHBA-2019:2794Third Party Advisory
- https://access.redhat.com/errata/RHBA-2019:2816Third Party Advisory
- https://access.redhat.com/errata/RHBA-2019:2824Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3239Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3811Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/80984PatchThird Party Advisory
- https://groups.google.com/d/msg/kubernetes-security-announce/vUtEcSEY6SM/v2ZZxsmPatchThird Party Advisory
FAQ
What is CVE-2019-11249?
CVE-2019-11249 is a vulnerability with a CVSS score of 6.5 (MEDIUM). The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes runs tar inside the container to create a tar archive, copies it over th...
How severe is CVE-2019-11249?
CVE-2019-11249 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11249?
Check the references section above for vendor advisories and patch information. Affected products include: Kubernetes Kubernetes, Redhat Openshift Container Platform.