title: Kubernetes - csi-proxy - Insufficient input sanitization leads to privilege escalation
description: A security issue was discovered in Kubernetes where 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.
problem types: CWE-20 Improper Input Validation
affected:
{
defaultStatus: unaffected
product: csi-proxy
repo: https://github.com/kubernetes-csi/csi-proxy
vendor: Kubernetes
versions:
status: affected, version: v2.0.0-alpha.0
lessThanOrEqual: v1.1.2, status: affected, version: 0, versionType: semver
status: unaffected, version: v2.0.0-alpha.1
status: unaffected, version: v1.1.3
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL