cvelist/2021/27xxx/CVE-2021-27241.json

{
    "CVE_data_meta": {
        "ASSIGNER": "zdi-disclosures@trendmicro.com",
        "ID": "CVE-2021-27241",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Premium Security",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "20.8.2429 (Build 20.8.5653.561)"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Avast"
                }
            ]
        }
    },
    "credit": "Abdelhamid Naceri",
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "This vulnerability allows local attackers to delete arbitrary directories on affected installations of Avast Premium Security 20.8.2429 (Build 20.8.5653.561). An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the AvastSvc.exe module. By creating a directory junction, an attacker can abuse the service to delete a directory. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-12082."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-59: Improper Link Resolution Before File Access ('Link Following')"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://www.zerodayinitiative.com/advisories/ZDI-21-208/",
                "refsource": "MISC",
                "name": "https://www.zerodayinitiative.com/advisories/ZDI-21-208/"
            }
        ]
    },
    "impact": {
        "cvss": {
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H",
            "version": "3.0"
        }
    }
}