{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-39477",
        "ASSIGNER": "zdi-disclosures@trendmicro.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Inductive Automation Ignition ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20499."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-400: Uncontrolled Resource Consumption ('Resource Exhaustion')",
                        "cweId": "CWE-400"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Inductive Automation",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Ignition",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "8.1.24"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.zerodayinitiative.com/advisories/ZDI-23-1050/",
                "refsource": "MISC",
                "name": "https://www.zerodayinitiative.com/advisories/ZDI-23-1050/"
            },
            {
                "url": "https://inductiveautomation.com/downloads/releasenotes/8.1.33",
                "refsource": "MISC",
                "name": "https://inductiveautomation.com/downloads/releasenotes/8.1.33"
            }
        ]
    },
    "source": {
        "lang": "en",
        "value": "Claroty Research - Team82 - Uri Katz, Noam Moshe, Vera Vens, Sharon Brizinov"
    },
    "impact": {
        "cvss": [
            {
                "version": "3.0",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "baseScore": 7.5,
                "baseSeverity": "HIGH"
            }
        ]
    }
}