The kubectl cp command allows copying files between containers and the user machine. To copy files from a container, Kubernetes creates a tar inside the container, 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. The untar function can both create and follow symbolic links. The issue is resolved in kubectl v1.11.9, v1.12.7, v1.13.5, and v1.14.0.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: dwf
Published: 2019-04-01T14:14:27.768040Z
Updated: 2024-09-16T20:46:49.730Z
Reserved: 2019-04-01T00:00:00
Link: CVE-2019-1002101
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-04-01T14:29:00.640
Modified: 2024-11-21T04:17:42.747
Link: CVE-2019-1002101
Redhat