Improper input validation in Kubernetes Kubelet
CVE-2023-3676
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)
EPSS: 0.117 (95.5th percentile) — read the EPSS interpretation.
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.
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
- jordan@liggitt.net (issue-tracking, Exploit, Patch, Third Party Advisory, Mitigation)
- jordan@liggitt.net (mailing-list, Third Party Advisory)
- jordan@liggitt.net
Frequently asked questions
- What is CVE-2023-3676?
- CVE-2023-3676 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-2023-3676?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-3676 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.