{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-34557",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/QubesOS/qubes-issues/issues/6595",
                "refsource": "MISC",
                "name": "https://github.com/QubesOS/qubes-issues/issues/6595"
            },
            {
                "url": "https://www.openwall.com/lists/oss-security/2021/06/05/1",
                "refsource": "MISC",
                "name": "https://www.openwall.com/lists/oss-security/2021/06/05/1"
            },
            {
                "url": "https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt",
                "refsource": "MISC",
                "name": "https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt"
            },
            {
                "url": "https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch",
                "refsource": "MISC",
                "name": "https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20210611 Re: XScreenSaver 5.45: Disconnecting a video output can cause XScreenSaver to crash and unlock",
                "url": "http://www.openwall.com/lists/oss-security/2021/06/11/1"
            },
            {
                "refsource": "MLIST",
                "name": "[oss-security] 20210706 xscreensaver 5.45 crash",
                "url": "http://www.openwall.com/lists/oss-security/2021/07/06/2"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-5af4452ffd",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TC4QB7TRS4GS7LDXQQ4PC6J3LVFJYISV/"
            }
        ]
    }
}