CVE-2021-25741

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

A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

References

https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s

https://github.com/kubernetes/kubernetes/issues/104980

https://security.netapp.com/advisory/ntap-20211008-0006/

Details

Source: MITRE

Published: 2021-09-20

Updated: 2021-11-30

Type: CWE-552

Risk Information

CVSS v2

Base Score: 5.5

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

Impact Score: 4.9

Exploitability Score: 8

Severity: MEDIUM

CVSS v3

Base Score: 8.1

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

Impact Score: 5.2

Exploitability Score: 2.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions up to 1.19.14 (inclusive)

cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from 1.20.0 to 1.20.10 (inclusive)

cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from 1.21.0 to 1.21.4 (inclusive)

cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from 1.22.0 to 1.22.1 (inclusive)

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
155011Oracle Linux 8 : olcne / istio / istio / kubernetes (ELSA-2021-9546)NessusOracle Linux Local Security Checks
high
154970Oracle Linux 7 : olcne (ELSA-2021-9526)NessusOracle Linux Local Security Checks
high
153927Photon OS 4.0: Kubernetes PHSA-2021-4.0-0112NessusPhotonOS Local Security Checks
high
153834RHEL 7 : OpenShift Container Platform 4.8.13 (RHSA-2021:3631)NessusRed Hat Local Security Checks
high
153833RHEL 7 : OpenShift Container Platform 3.11.524 (RHSA-2021:3646)NessusRed Hat Local Security Checks
high
153756Photon OS 2.0: Kubernetes PHSA-2021-2.0-0394NessusPhotonOS Local Security Checks
high
153753Photon OS 3.0: Kubernetes PHSA-2021-3.0-0303NessusPhotonOS Local Security Checks
high
153690Photon OS 1.0: Kubernetes PHSA-2021-1.0-0435NessusPhotonOS Local Security Checks
high