{
    "CVE_data_meta": {
        "AKA": "",
        "ASSIGNER": "security@kubernetes.io",
        "DATE_PUBLIC": "2019-09-27",
        "ID": "CVE-2019-11253",
        "STATE": "PUBLIC",
        "TITLE": "Kubernetes API Server JSON/YAML parsing vulnerable to resource exhaustion attack"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Kubernetes",
                                "version": {
                                    "version_data": [
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "prior to 1.13.12"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "prior to 1.14.8"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "prior to 1.15.5"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "prior to 1.16.2"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.1"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.2"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.3"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.4"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.5"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.6"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.7"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.8"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.9"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.10"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.11"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "",
                                            "version_name": "",
                                            "version_value": "1.12"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Kubernetes"
                }
            ]
        }
    },
    "configuration": [],
    "credit": [
        {
            "lang": "eng",
            "value": "Rory McCune"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Improper input validation in the Kubernetes API server in versions v1.0-1.12 and versions prior to v1.13.12, v1.14.8, v1.15.5, and v1.16.2 allows authorized users to send malicious YAML or JSON payloads, causing the API server to consume excessive CPU or memory, potentially crashing and becoming unavailable. Prior to v1.14.0, default RBAC policy authorized anonymous users to submit requests that could trigger this vulnerability. Clusters upgraded from a version prior to v1.14.0 keep the more permissive policy by default for backwards compatibility."
            }
        ]
    },
    "exploit": [],
    "generator": {
        "engine": "Vulnogram 0.0.7"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-20: Improper Input Validation"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/kubernetes/kubernetes/issues/83253",
                "refsource": "CONFIRM",
                "url": "https://github.com/kubernetes/kubernetes/issues/83253"
            },
            {
                "refsource": "MLIST",
                "url": "https://groups.google.com/forum/#!topic/kubernetes-security-announce/jk8polzSUxs",
                "name": "CVE-2019-11253: denial of service vulnerability from malicious YAML or JSON payloads"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3239",
                "url": "https://access.redhat.com/errata/RHSA-2019:3239"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20191031-0006/",
                "url": "https://security.netapp.com/advisory/ntap-20191031-0006/"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3811",
                "url": "https://access.redhat.com/errata/RHSA-2019:3811"
            },
            {
                "refsource": "REDHAT",
                "name": "RHSA-2019:3905",
                "url": "https://access.redhat.com/errata/RHSA-2019:3905"
            }
        ]
    },
    "solution": [],
    "source": {
        "advisory": "",
        "defect": [
            "https://github.com/kubernetes/kubernetes/issues/83253"
        ],
        "discovery": "USER"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "Exposure to requests from unauthenticated users can be mitigated by removing all write permissions from unauthenticated users, following instructions at https://github.com/kubernetes/kubernetes/issues/83253"
        }
    ]
}