{"uuid": "21e2b2f3-c3d3-4dcc-aa55-91af52c2a736", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2021-25741", "type": "seen", "source": "https://t.me/devsecops_weekly/313", "content": "\u041f\u0440\u0438\u0432\u0435\u0442!\n\n\u041d\u0435\u0434\u0430\u0432\u043d\u043e (13.09.2021) \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u043d\u043e\u0432\u043e\u0441\u0442\u044c \u043f\u0440\u043e CVE-2021-25741 \u0432 Kubernetes (\u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043a\u0440\u0438\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u0438 High), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u00abcreate a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem\u00bb.\n\n\u041f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u043d\u044b\u0435 \u0432\u0435\u0440\u0441\u0438\u0438: v1.22.0 - v1.22.1; v1.21.0 - v1.21.4; v1.20.0 - v1.20.10; <= v1.19.14\n\n\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u043d\u043e \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c, \u0434\u0430\u0436\u0435 \u0435\u0441\u043b\u0438 \u0430\u0434\u043c\u0438\u043d\u0438\u0441\u0442\u0440\u0430\u0442\u043e\u0440\u044b \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0438\u043b\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c mount'a hostPath: \u00abExploitation allows hostPath-like access without use of the hostPath feature, thus bypassing the restriction\u00bb.\n\n\u0420\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438 \u043f\u043e \u043f\u0440\u043e\u0444\u0438\u043b\u0430\u043a\u0442\u0438\u043a\u0435: \u00abDisable the VolumeSubpath feature gate on kubelet and kube-apiserver, and remove any existing Pods making use of the feature\u00bb.\n\n\u0411\u043e\u043b\u044c\u0448\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438 \u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0439\u0442\u0438 \u043f\u043e \u0441\u0441\u044b\u043b\u043a\u0435 \u043d\u0430 github, \u0441\u0442\u0430\u0442\u044c\u0435 \u0438 \u0432 \u043c\u0430\u0442\u0435\u0440\u0438\u0430\u043b\u0430\u0445 cve.report", "creation_timestamp": "2026-08-04T12:00:07.996584Z"}