CVE-2020-28914

high

Description

An improper file permissions vulnerability affects Kata Containers prior to 1.11.5. When using a Kubernetes hostPath volume and mounting either a file or directory into a container as readonly, the file/directory is mounted as readOnly inside the container, but is still writable inside the guest. For a container breakout situation, a malicious guest can potentially modify or delete files/directories expected to be read-only.

References

https://github.com/kata-containers/runtime/releases/tag/1.12.0

https://github.com/kata-containers/runtime/releases/tag/1.11.5

https://github.com/kata-containers/runtime/pull/3051

https://github.com/kata-containers/runtime/pull/3042

https://github.com/kata-containers/kata-containers/pull/1062

Details

Source: Mitre, NVD

Published: 2020-11-17

Updated: 2020-12-04

Risk Information

CVSS v2

Base Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:P/A:P

Severity: Low

CVSS v3

Base Score: 7.1

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

Severity: High