CVE-2022-0759 – kubeclient: kubeconfig parsing error can lead to MITM attacks

https://notcve.org/view.php?id=CVE-2022-0759

A flaw was found in all versions of kubeclient up to (but not including) v4.9.3, the Ruby client for Kubernetes REST API, in the way it parsed kubeconfig files. When the kubeconfig file does not configure custom CA to verify certs, kubeclient ends up accepting any certificate (it wrongly returns VERIFY_NONE). Ruby applications that leverage kubeclient to parse kubeconfig files are susceptible to Man-in-the-middle attacks (MITM). Se ha encontrado un fallo en todas las versiones de kubeclient hasta (pero sin incluir) la v4.9.3, el cliente Ruby para la API REST de Kubernetes, en la forma en que analiza los archivos kubeconfig. Cuando el archivo kubeconfig no configura la CA personalizada para verificar los certificados, kubeclient acaba aceptando cualquier certificado (devuelve erróneamente VERIFY_NONE). • https://github.com/ManageIQ/kubeclient/issues/554 https://github.com/ManageIQ/kubeclient/issues/555 https://access.redhat.com/security/cve/CVE-2022-0759 https://bugzilla.redhat.com/show_bug.cgi?id=2058404 • CWE-295: Improper Certificate Validation •