CVE-2021-25737 LOW

CVE-2021-25737: Holes in EndpointSlice Validation Enable Host Network Hijack

Vendor Kubernetes
Product Kubernetes
Weakness CWE-184
Published September 6, 2021
Last update September 16, 2024

CVSS base score

2.7/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality Low
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 6, 2021 CVE published
September 16, 2024 Record updated