Improper input validation in Kubernetes Kubelet
CVE-2023-5528
A security issue was discovered in Kubernetes where a user that can create pods and persistent volumes on Windows nodes may be able to escalate to admin privileges on those nodes. Kubernetes clusters are only affected if they are using an in-tree storage plugin for Windows nodes.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.043 (90.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.043 · change: +0.007
Affected products
- Kubernetes Kubelet — versions v1.28.0, v1.27.0, v1.26.0
- Kubernetes
- Microsoft Windows
- Fedoraproject Fedora — versions 37, 38, 39
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/kubernetes/kubernetes/issues/121879 (issue-tracking, Patch, Issue Tracking)
- groups.google.com/g/kubernetes-security-announce/c/SL_d4NR8pzA (mailing-list, Mailing List)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Release Notes)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Release Notes)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Release Notes)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-5528?
- CVE-2023-5528 is a high-severity vulnerability in Kubernetes Kubelet, classified under Improper Input Validation. CVSS score: 7.2/10. Published 2023-11-14.
- How severe is CVE-2023-5528?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2023-5528 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.