Permissions, Privileges, and Access Controls in Kubernetes - CVE-2019-11245
Published: August 29, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU35584
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-11245
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Kubernetes
Affected software:
Kubernetes
Kubernetes
Detailed vulnerability description
The vulnerability allows a local authenticated user to execute arbitrary code.
In kubelet v1.13.6 and v1.14.2, containers for pods that do not specify an explicit runAsUser attempt to run as uid 0 (root) on container restart, or if the image was previously pulled to the node. If the pod specified mustRunAsNonRoot: true, the kubelet will refuse to start the container as root. If the pod did not specify mustRunAsNonRoot: true, the kubelet will run the container as uid 0.
How to mitigate CVE-2019-11245
Install update from vendor's website.