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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*", "matchCriteriaId": "1609D4D8-E5EF-418C-B81E-22066045A439", "versionEndExcluding": "2.1.3", "versionStartIncluding": "2.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:kubernetes:container_storage_interface_snapshotter:*:*:*:*:*:*:*:*", "matchCriteriaId": "446F2CD3-BCE5-41DF-AD1F-3A97A2B8D59E", "versionEndExcluding": "3.0.2", "versionStartIncluding": "3.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can\u2019t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected."}, {"lang": "es", "value": "Kubernetes CSI snapshot-controller versiones v2.1.3 y v3.0.2, pod\u00eda entrar en p\u00e1nico al procesar un recurso personalizado VolumeSnapshot cuando: - El VolumeSnapshot hac\u00eda referencia a un PersistentVolumeClaim no existente y el VolumeSnapshot no hac\u00eda referencia a ning\u00fan VolumeSnapshotClass. - El snapshot-controller se bloquea, Kubernetes lo reinicia autom\u00e1ticamente y procesa el mismo recurso personalizado de VolumeSnapshot despu\u00e9s del reinicio, ingresando en un bucle de bloqueo sin fin. Esta vulnerabilidad solo afecta a la funcionalidad volume snapshot. Cuando se explotaba, los usuarios no pueden tomar instant\u00e1neas de sus vol\u00famenes o eliminar las instant\u00e1neas. Todas las dem\u00e1s funciones de Kubernetes no est\u00e1n afectadas"}], "id": "CVE-2020-8569", "lastModified": "2021-02-01T19:05:37.983", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 4.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "jordan@liggitt.net", "type": "Secondary"}]}, "published": "2021-01-21T17:15:14.250", "references": [{"source": "jordan@liggitt.net", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/kubernetes-csi/external-snapshotter/issues/380"}, {"source": "jordan@liggitt.net", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU"}], "sourceIdentifier": "jordan@liggitt.net", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "jordan@liggitt.net", "type": "Secondary"}]}

{"bugzilla": {"description": "kubernetes-csi: NULL pointer dereference in snapshot-controller when processing a VolumeSnapshot custom resource", "id": "1897314", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1897314"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-476", "details": ["Kubernetes CSI snapshot-controller prior to v2.1.3 and v3.0.2 could panic when processing a VolumeSnapshot custom resource when: - The VolumeSnapshot referenced a non-existing PersistentVolumeClaim and the VolumeSnapshot did not reference any VolumeSnapshotClass. - The snapshot-controller crashes, is automatically restarted by Kubernetes, and processes the same VolumeSnapshot custom resource after the restart, entering an endless crashloop. Only the volume snapshot feature is affected by this vulnerability. When exploited, users can\u2019t take snapshots of their volumes or delete the snapshots. All other Kubernetes functionality is not affected.", "A flaw was found in the Kubernetes snapshot-controller, where it is vulnerable to a denial of service attack via authorized API requests. The snapshot-controller can dereference a NULL pointer when processing a VolumeSnapshot custom resource via an authorized API request with invalid references to PersistentVolumeClaims and VolumeSnapshotClasses. The result causes the snapshot-controller to enter an endless crash loop. The highest threat from this vulnerability is to system availability."], "name": "CVE-2020-8569", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-csi-external-snapshotter-rhel7", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-csi-snapshot-controller", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift4/ose-csi-snapshot-controller-rhel8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:2", "fix_state": "Not affected", "package_name": "hyperconverged-cluster-operator", "product_name": "Red Hat OpenShift Virtualization 2"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:2", "fix_state": "Not affected", "package_name": "virt-cdi-controller", "product_name": "Red Hat OpenShift Virtualization 2"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:2", "fix_state": "Not affected", "package_name": "virt-controller", "product_name": "Red Hat OpenShift Virtualization 2"}], "public_date": "2020-11-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-8569\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8569\nhttps://github.com/kubernetes-csi/external-snapshotter/issues/421\nhttps://groups.google.com/g/kubernetes-security-announce/c/1EzCr1qUxxU"], "statement": "This vulnerability only affects versions v3.0.0 - v3.0.1 of the upstream snapshot-controller. No released component of OpenShift Container Platform (OCP) includes a vulnerable version. The first release of OCP 4.6 included v3 of a snapshot-controller with this fix, earlier versions of OCP include v2, which is not affected by this vulnerability. Similarly, no components of OpenShift Virtualization include a vulnerable version.", "threat_severity": "Moderate", "upstream_fix": "snapshot-controller 3.0.2, snapshot-controller 2.1.3"}