{
    "data_type": "CVE",
    "data_format": "MITRE",
    "data_version": "4.0",
    "CVE_data_meta": {
        "ID": "CVE-2021-34431",
        "ASSIGNER": "security@eclipse.org",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "The Eclipse Foundation",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Eclipse Mosquitto",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": ">=",
                                            "version_value": "1.6"
                                        },
                                        {
                                            "version_affected": "<=",
                                            "version_value": "2.0.10"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "credit": [
        {
            "lang": "eng",
            "value": "Thanks to Kathrin Kleinhammer of OTARIS Interactive Services GmbH for discovering and reporting this issue."
        }
    ],
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In Eclipse Mosquitto version 1.6 to 2.0.10, if an authenticated client that had connected with MQTT v5 sent a crafted CONNECT message to the broker a memory leak would occur, which could be used to provide a DoS attack against the broker."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-401: Missing Release of Memory after Effective Lifetime"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191",
                "refsource": "CONFIRM",
                "url": "https://bugs.eclipse.org/bugs/show_bug.cgi?id=573191"
            }
        ]
    }
}