CVE-2020-28914

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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

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

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
high
144655EulerOS 2.0 SP9 : kata-containers (EulerOS-SA-2021-1008)NessusHuawei Local Security Checks
high