CVE-2023-26484

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{"bugzilla": {"description": "kubevirt: Incorrect Authorization", "id": "2179728", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2179728"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-863", "details": ["KubeVirt is a virtual machine management add-on for Kubernetes. In versions 0.59.0 and prior, if a malicious user has taken over a Kubernetes node where virt-handler (the KubeVirt node-daemon) is running, the virt-handler service account can be used to modify all node specs. This can be misused to lure-in system-level-privileged components which can, for instance, read all secrets on the cluster, or can exec into pods on other nodes. This way, a compromised node can be used to elevate privileges beyond the node until potentially having full privileged access to the whole cluster. The simplest way to exploit this, once a user could compromise a specific node, is to set with the virt-handler service account all other nodes to unschedulable and simply wait until system-critical components with high privileges appear on its node. No patches are available as of time of publication. As a workaround, gatekeeper users can add a webhook which will block the `virt-handler` service account to modify the spec of a node.", "A flaw was found in the Kubevirt package. KubeVirt could allow a remote authenticated attacker to bypass security restrictions caused by improper authorization validation. An attacker can modify all node specs by sending a specially-crafted request using the virt-handler service account."], "name": "CVE-2023-26484", "package_state": [{"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Not affected", "package_name": "container-native-virtualization/cluster-network-addons-operator-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Not affected", "package_name": "container-native-virtualization/kubemacpool", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Not affected", "package_name": "container-native-virtualization/kubemacpool-rhel9", "product_name": "Red Hat OpenShift Virtualization 4"}, {"cpe": "cpe:/a:redhat:container_native_virtualization:4", "fix_state": "Will not fix", "package_name": "kubevirt", "product_name": "Red Hat OpenShift Virtualization 4"}], "public_date": "2023-03-15T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-26484\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-26484\nhttps://github.com/kubevirt/kubevirt/issues/9109\nhttps://github.com/kubevirt/kubevirt/security/advisories/GHSA-cp96-jpmq-xrr2"], "statement": "To exploit this, once a user could compromise a specific node, is to set the virt-handler service account to all other nodes to unschedulable, and simply wait until system-critical components with high privileges appear on its node. Since this requires a node to be compromised first, the impact of this issue is considered Moderate.", "threat_severity": "Moderate"}

{}