cvelist/2021/37xxx/CVE-2021-37617.json

{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-37617",
        "STATE": "PUBLIC",
        "TITLE": "Untrusted Search Path in Nextcloud Desktop Client"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "security-advisories",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": ">= 3.0.3 , <= 3.2.4"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "nextcloud"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with a computer. The Nextcloud Desktop Client invokes its uninstaller script when being installed to make sure there are no remnants of previous installations. In versions 3.0.3 through 3.2.4, the Client searches the `Uninstall.exe` file in a folder that can be written by regular users. This could lead to a case where a malicious user creates a malicious `Uninstall.exe`, which would be executed with administrative privileges on the Nextcloud Desktop Client installation. This issue is fixed in Nextcloud Desktop Client version 3.3.0. As a workaround, do not allow untrusted users to create content in the `C:\\` system folder and verify that there is no malicious `C:\\Uninstall.exe` file on the system."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.3,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-426: Untrusted Search Path"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6q2w-v879-q24v",
                "refsource": "CONFIRM",
                "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6q2w-v879-q24v"
            },
            {
                "name": "https://github.com/nextcloud/desktop/pull/3497",
                "refsource": "MISC",
                "url": "https://github.com/nextcloud/desktop/pull/3497"
            },
            {
                "name": "https://hackerone.com/reports/1240749",
                "refsource": "MISC",
                "url": "https://hackerone.com/reports/1240749"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-6q2w-v879-q24v",
        "discovery": "UNKNOWN"
    }
}