Improper input validation in Kubernetes Kubelet
CVE-2023-3955
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.040 (90.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.040 · change: +0.009
Affected products
- Kubernetes Kubelet — versions v1.28.0, v1.27.0, v1.26.0
- Kubernetes
- Microsoft Windows
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/kubernetes/kubernetes/issues/119595 (issue-tracking, Exploit, Patch, Third Party Advisory, Mitigation)
- groups.google.com/g/kubernetes-security-announce/c/JrX4bb7d83E (mailing-list, Technical Description)
- security.netapp.com/advisory/ntap-20231221-0002/
Frequently asked questions
- What is CVE-2023-3955?
- CVE-2023-3955 is a high-severity vulnerability in Kubernetes Kubelet, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2023-10-31.
- How severe is CVE-2023-3955?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-3955 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.