CVE-2019-11246

Summary

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 1.12.9, versions prior to 1.13.6, versions prior to 1.14.2, and versions 1.1, 1.2, 1.4, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11.

Affected Software

VendorProductVersion RangeStatus
KubernetesKubernetesprior to 1.12.9affected
KubernetesKubernetesprior to 1.13.6affected
KubernetesKubernetesprior to 1.14.2affected
KubernetesKubernetes1.1affected
KubernetesKubernetes1.2affected
KubernetesKubernetes1.4affected
KubernetesKubernetes1.5affected
KubernetesKubernetes1.6affected
KubernetesKubernetes1.7affected
KubernetesKubernetes1.8affected
KubernetesKubernetes1.9affected
KubernetesKubernetes1.10affected
KubernetesKubernetes1.11affected

Weaknesses

  • CWE-61: CWE-61: UNIX Symbolic Link (Symlink) Following

ADP Enrichment

CVE Program Container

Additional References

References