Vulnerability · Published Oct 31, 2023 · Assigned by kubernetes
CVE-2023-3955Kubernetes - Windows nodes - Insufficient input sanitization leads to privilege escalation
High 8.8
In plain English
A high-severity improper input validation in kubelet from Kubernetes. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.8% (higher than 90% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)3.8%top 10.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A security issue was discovered in Kubernetes where a user that can create pods on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they include Windows nodes.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | kubernetes | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2023-3955 |
| Debian:13 | kubernetes | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2023-3955 |
| Debian:14 | kubernetes | 1.20.5+really1.20.2-1 | DEBIAN-CVE-2023-3955 |
| Go | k8s.io/kubernetes | 1.25.13 | GHSA-q78c-gwqw-jcmc |
| Go | k8s.io/kubernetes | 1.24.17 | GHSA-q78c-gwqw-jcmc |
| Go | k8s.io/kubernetes | 1.28.1 | GHSA-q78c-gwqw-jcmc |
| Go | k8s.io/kubernetes | 1.24.17, 1.25.13, 1.26.8, 1.27.5, 1.28.1 | GO-2023-2170 |
| Go | k8s.io/kubernetes | 1.27.5 | GHSA-q78c-gwqw-jcmc |
| Go | k8s.io/kubernetes | 1.26.8 | GHSA-q78c-gwqw-jcmc |
| Go | k8s.io/mount-utils | 0.24.17, 0.25.13, 0.26.8, 0.27.5, 0.28.1 | GO-2023-2170 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Kubernetes | kubelet | v1.28.0v1.27.0 – through v1.27.4v1.26.0 – through v1.26.7v1.25.0 – through v1.25.12 |
Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H