Kubernetes csi-proxy vulnerable to privilege escalation due to improper input validation

2023-11-0318:30:24

CWE-20

GitHub Advisory Database

github.com

kubernetes

privilege escalation

input validation

windows nodes

admin privileges

software

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

26.8%

JSON

Kubernetes is vulnerable to privilege escalation when a user that can create pods on Windows nodes running kubernetes-csi-proxy may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes running kubernetes-csi-proxy.

Affected configurations

Vulners

Node

kubernetescsi_proxyRange≤1.1.2

kubernetescsi_proxyMatch2.0.0-alpha.0

VendorProductVersionCPE
kubernetescsi_proxy*cpe:2.3:a:kubernetes:csi_proxy:*:*:*:*:*:*:*:*
kubernetescsi_proxy2.0.0-alpha.0cpe:2.3:a:kubernetes:csi_proxy:2.0.0-alpha.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
kubernetes	csi_proxy	*	cpe:2.3:a:kubernetes:csi_proxy::::::::
kubernetes	csi_proxy	2.0.0-alpha.0	cpe:2.3:a:kubernetes:csi_proxy:2.0.0-alpha.0:::::::*