{
    "CVE_data_meta": {
        "ASSIGNER": "security@apache.org",
        "ID": "CVE-2021-45457",
        "STATE": "PUBLIC",
        "TITLE": "Overly broad CORS configuration "
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Apache Kylin",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<=",
                                            "version_name": "Apache Kylin 2",
                                            "version_value": "2.6.6"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "Apache Kylin 3",
                                            "version_value": "3.1.2"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_name": "Apache Kylin 4",
                                            "version_value": "4.0.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Apache Software Foundation"
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Alvaro Munoz <pwntester@github.com>"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In Apache Kylin, Cross-origin requests with credentials are allowed to be sent from any origin. This issue affects Apache Kylin 2 version 2.6.6 and prior versions; Apache Kylin 3 version 3.1.2 and prior versions; Apache Kylin 4 version 4.0.0 and prior versions."
            }
        ]
    },
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": [
        {
            "other": "moderate"
        }
    ],
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CORS"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "MISC",
                "url": "https://lists.apache.org/thread/rzv4mq58okwj1n88lry82ol2wwm57q1m",
                "name": "https://lists.apache.org/thread/rzv4mq58okwj1n88lry82ol2wwm57q1m"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20220106 CVE-2021-45457: Apache Kylin: Overly broad CORS configuration",
                "url": "http://www.openwall.com/lists/oss-security/2022/01/06/2"
            }
        ]
    },
    "source": {
        "discovery": "UNKNOWN"
    },
    "work_around": [
        {
            "lang": "eng",
            "value": "\nKylin reflects the `Origin` header and allow credentials to be sent cross-origin in the default configuration. The preflight OPTIONS request:\n```\nOPTIONS /kylin/api/projects HTTP/1.1\nHost: localhost:7070\nUser-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0\nAccept: */*\nAccept-Language: en-US\nAccept-Encoding: gzip, deflate\nAccess-Control-Request-Method: POST\nAccess-Control-Request-Headers: content-type\nReferer: http://b49b-95-62-58-48.ngrok.io/\nOrigin: http://b49b-95-62-58-48.ngrok.io\nConnection: keep-alive\nCache-Control: max-age=0\n```\n\nWill be replied with:\n\n```\nHTTP/1.1 200 OK\nServer: Apache-Coyote/1.1\nAccess-Control-Allow-Origin: http://b49b-95-62-58-48.ngrok.io\nAccess-Control-Allow-Credentials: true\nVary: Origin\nAccess-Control-Allow-Methods: DELETE, POST, GET, OPTIONS, PUT\nAccess-Control-Allow-Headers: Authorization, Origin, No-Cache, X-Requested-With, Cache-Control, Accept, X-E4m-With, If-Modified-Since, Pragma, Last-Modified, Expires, Content-Type\nContent-Length: 0\n```\n\nUsers of Kylin 2.x & Kylin 3.x should upgrade to 3.1.3 or apply patch https://github.com/apache/kylin/pull/1782.\nUsers of Kylin 4.x should upgrade to 4.0.1 or apply patch https://github.com/apache/kylin/pull/1781."
        }
    ]
}