CVE-2019-1002101

Kubernetes vulnerability

CVSS

6.4

EPSS

13.2%

EPSS pct

96th

Exploited

No known

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.

Affected vendor

Kubernetes

Affected product

Kubernetes

CVSS vector

CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-59 — Link Following

Published

2019-04-01

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring high privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 13.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2019-1002101

Confirm whether Kubernetes Kubernetes is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-1002101.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-1002101

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