CVE-2021-25737

medium
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 redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.

References

https://github.com/kubernetes/kubernetes/issues/102106

https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY

https://security.netapp.com/advisory/ntap-20211004-0004/

Details

Source: MITRE

Published: 2021-09-06

Updated: 2021-10-07

Type: CWE-601

Risk Information

CVSS v2

Base Score: 4.9

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

Impact Score: 4.9

Exploitability Score: 6.8

Severity: MEDIUM

CVSS v3

Base Score: 4.8

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

Impact Score: 2.7

Exploitability Score: 1.7

Severity: MEDIUM

Tenable Plugins

View all (2 total)

IDNameProductFamilySeverity
152103RHEL 7 / 8 : OpenShift Container Platform 4.8.2 packages and (RHSA-2021:2437)NessusRed Hat Local Security Checks
high
151962Photon OS 1.0: Kubernetes PHSA-2021-1.0-0413NessusPhotonOS Local Security Checks
medium