cvelist/2020/11xxx/CVE-2020-11934.json

{
    "CVE_data_meta": {
        "AKA": "",
        "ASSIGNER": "security@ubuntu.com",
        "DATE_PUBLIC": "2020-05-22T05:55:00.000Z",
        "ID": "CVE-2020-11934",
        "STATE": "PUBLIC",
        "TITLE": "Sandbox escape vulnerability via snapctl user-open (xdg-open)"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "snapd",
                                "version": {
                                    "version_data": [
                                        {
                                            "platform": "",
                                            "version_affected": "<",
                                            "version_name": "2.45.1",
                                            "version_value": "2.45.1ubuntu0.2"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "<",
                                            "version_name": "2.45.1",
                                            "version_value": "2.45.1+18.04.2"
                                        },
                                        {
                                            "platform": "",
                                            "version_affected": "<",
                                            "version_name": "2.45.1",
                                            "version_value": "2.45.1+20.04.2"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Canonical"
                }
            ]
        }
    },
    "configuration": [],
    "credit": [
        {
            "lang": "eng",
            "value": "James Henstridge"
        }
    ],
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2."
            }
        ]
    },
    "exploit": [],
    "generator": {
        "engine": "Vulnogram 0.0.9"
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "Sandbox escape vulnerability"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://ubuntu.com/USN-4424-1",
                "refsource": "CONFIRM",
                "url": "https://ubuntu.com/USN-4424-1"
            },
            {
                "name": "https://launchpad.net/bugs/1880085",
                "refsource": "CONFIRM",
                "url": "https://launchpad.net/bugs/1880085"
            }
        ]
    },
    "solution": [],
    "source": {
        "advisory": "https://ubuntu.com/USN-4424-1",
        "defect": [
            "https://launchpad.net/bugs/1880085"
        ],
        "discovery": "INTERNAL"
    },
    "work_around": []
}