{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2019-1258",
        "ASSIGNER": "secure@microsoft.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An elevation of privilege vulnerability exists in Azure Active Directory Authentication Library On-Behalf-Of flow, in the way the library caches tokens. This vulnerability allows an authenticated attacker to perform actions in context of another user.\nThe authenticated attacker can exploit this vulneraiblity by accessing a service configured for On-Behalf-Of flow that assigns incorrect tokens.\nThis security update addresses the vulnerability by removing fallback cache look-up for On-Behalf-Of scenarios.\n"
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Elevation of Privilege"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Microsoft",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "ADAL.NET",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "5.0.0",
                                            "version_value": "publication"
                                        }
                                    ]
                                }
                            },
                            {
                                "product_name": "Nuget 5.2.0",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "5.0.0",
                                            "version_value": "publication"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258",
                "refsource": "MISC",
                "name": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1258"
            }
        ]
    }
}