Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2024-39690
CVE-2024-39690:
vulnerability analysis and mitigation
Overview
Capsule, a multi-tenancy and policy-based framework for Kubernetes, contains a vulnerability (CVE-2024-39690) in version 0.7.0 and earlier where tenant-owners can exploit namespace permissions. The vulnerability was discovered and disclosed on August 20, 2024, affecting the core functionality of the Capsule framework (NVD, GitHub Advisory).
Technical details
The vulnerability is classified with a CVSS v3.1 base score of 8.8 (HIGH) according to NIST, and 8.4 (HIGH) according to GitHub. The vulnerability is identified as CWE-863 (Incorrect Authorization). The technical issue allows tenant-owners with 'patch namespace' permissions to modify any arbitrary namespace that hasn't been claimed by a tenant (those without the ownerReference field) (NVD).
Impact
The vulnerability enables tenant-owners to gain unauthorized control of namespaces, including potentially sensitive system namespaces. This could lead to a significant security breach as attackers could take over critical system components and potentially compromise the entire Kubernetes cluster (GitHub Advisory).
Mitigation and workarounds
A patch has been implemented in the Capsule repository to address this vulnerability. The fix involves additional validation checks for namespace ownership and modifications to the webhook handler for namespace updates (Capsule Patch).
Additional resources
Source: This report was generated using AI
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