cvelist/2021/25xxx/CVE-2021-25735.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security@kubernetes.io",
        "DATE_PUBLIC": "2021-04-14T16:00:00.000Z",
        "ID": "CVE-2021-25735",
        "STATE": "PUBLIC",
        "TITLE": "Validating Admission Webhook does not observe some previous fields"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Kubernetes",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_value": "1.18.17"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_value": "1.19.9"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_value": "1.20.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Kubernetes"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Rogerio Bastos & Ari Lima"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "A security issue was discovered in kube-apiserver that could allow node updates to bypass a Validating Admission Webhook. Clusters are only affected by this vulnerability if they run a Validating Admission Webhook for Nodes that denies admission based at least partially on the old state of the Node object. Validating Admission Webhook does not observe some previous fields."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-372 Incomplete Internal State Distinction"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "url": "https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9Y",
                "name": "https://groups.google.com/g/kubernetes-security-announce/c/FKAGqT4jx9Y"
            },
            {
                "refsource": "MISC",
                "url": "https://github.com/kubernetes/kubernetes/issues/100096",
                "name": "https://github.com/kubernetes/kubernetes/issues/100096"
            }
        ]
    },
    "source": {
        "defect": [
            "https://github.com/kubernetes/kubernetes/issues/100096"
        ],
        "discovery": "EXTERNAL"
    }
}