CVE-2021-25737CWE-184

Holes in EndpointSlice Validation Enable Host Network Hijack

Low · published September 6, 2021

CVSS v3.1
2.7
EPSS
1%
Percentile
70.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
2.7 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01326 · 70.7th percentile
Weakness
CWE-184 · Incomplete List of Disallowed Inputs
Published
2021-09-06T11:32Z
EPSS history
Timeline
  • 06 SEP 11:32Z
    Holes in EndpointSlice Validation Enable Host Network Hijack
    cvelistv5