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vulnerability

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

Severity
5
CVSS
(AV:N/AC:M/Au:S/C:P/I:P/A:N)
Published
Sep 6, 2021
Added
Mar 10, 2022
Modified
Apr 17, 2026

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.

Solutions

kubernetes-upgrade-1_18_19kubernetes-upgrade-1_19_10kubernetes-upgrade-1_20_7
Title
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