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hackeroneTomerpeled92H1:2231019
HistoryOct 29, 2023 - 10:43 a.m.

Kubernetes: CVE-2023-5528: Insufficient input sanitization in in-tree storage plugin leads to privilege escalation on Windows nodes

2023-10-2910:43:27
tomerpeled92
hackerone.com
$5000
16
kubernetes
input sanitization
privilege escalation
windows nodes
cve-2023-5528
code injection
vulnerability
reproduction
fix
severity
bounty
verification
kubelet context
bug bounty

7.5 High

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

35.5%

This is an imported report from the email i have sent a month ago about a code injection vulnerability
The vulnerability was assigned as CVE-2023-5528
As a reference i have talked with Balaji from the k8 team.
Excerpts from the email chain that might be relevant:

“Just a quick update to let you know that we were able to reproduce the issue and are working on a fix. CVE-2023-5528 has been reserved for this issue. We’ll keep you updated on the next steps as we review the proposed fix.”

“Hi Tomer,
This is being rated as a Tier 1 High severity ($5,000) bounty.”

The vulnerability was verified and assigned a CVE by the k8 team

Impact

Code execution from kubelet context(SYSYTEM privileges) on all windows nodes on a cluster.