CVE-2019-1002101

CVE Details

Release Date:	2019-04-01
Impact:	Moderate	What is this?

Description

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.

See more information about CVE-2019-1002101 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Version:	3.0
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	High
Availability Impact:	None

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kubeadm-ha-setup)	ELSA-2019-4593	2019-04-13
Oracle Linux version 7 (kubeadm-upgrade)	ELSA-2019-4593	2019-04-13
Oracle Linux version 7 (kubernetes)	ELSA-2019-4593	2019-04-13
Oracle Linux version 7 (kubernetes-cni)	ELSA-2019-4593	2019-04-13
Oracle Linux version 7 (kubernetes-cni-plugins)	ELSA-2019-4593	2019-04-13