CVE-2020-28914

LOW

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/kata-containers/pull/1062

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

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

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

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

Details

Source: MITRE

Published: 2020-11-17

Updated: 2020-12-04

Type: CWE-732

Risk Information

CVSS v2.0

Base Score: 3.6

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

Impact Score: 4.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 7.1

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Impact Score: 5.2

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (4 total)

IDNameProductFamilySeverity
146377Oracle Linux 7 : olcne (ELSA-2021-9029)NessusOracle Linux Local Security Checks
medium
146376Oracle Linux 7 / 8 : olcne (ELSA-2021-9028)NessusOracle Linux Local Security Checks
medium
144680EulerOS 2.0 SP9 : kata-containers (EulerOS-SA-2021-1027)NessusHuawei Local Security Checks
low
144655EulerOS 2.0 SP9 : kata-containers (EulerOS-SA-2021-1008)NessusHuawei Local Security Checks
low