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CVE-2023-30622

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Date: April 24, 2023

Clusternet is a general-purpose system for controlling Kubernetes clusters across different environments. An issue in clusternet prior to version 0.15.2 can be leveraged to lead to a cluster-level privilege escalation. The clusternet has a deployment called "cluster-hub" inside the "clusternet-system" Kubernetes namespace, which runs on worker nodes randomly. The deployment has a service account called "clusternet-hub", which has a cluster role called "clusternet:hub" via cluster role binding. The "clusternet:hub" cluster role has ""*" verbs of "*.*"" resources. Thus, if a malicious user can access the worker node which runs the clusternet, they can leverage the service account to do malicious actions to critical system resources. For example, the malicious user can leverage the service account to get ALL secrets in the entire cluster, resulting in cluster-level privilege escalation. Version 0.15.2 contains a fix for this issue.

Language: Go

Severity Score

Severity Score

Weakness Type (CWE)

Improper Privilege Management

CWE-269

Top Fix

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Upgrade to version github.com/clusternet/clusternet - v0.15.2

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): HIGH
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): LOW
Availability (A): LOW

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