{"containers":{"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"descriptions":[{"lang":"en","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."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-08-19T02:06:17.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_MISC"],"url":"https://github.com/QubesOS/qubes-issues/issues/6595"},{"tags":["x_refsource_MISC"],"url":"https://www.openwall.com/lists/oss-security/2021/06/05/1"},{"tags":["x_refsource_MISC"],"url":"https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt"},{"tags":["x_refsource_MISC"],"url":"https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch"},{"name":"[oss-security] 20210611 Re: XScreenSaver 5.45: Disconnecting a video output can cause XScreenSaver to crash and unlock","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2021/06/11/1"},{"name":"[oss-security] 20210706 xscreensaver 5.45 crash","tags":["mailing-list","x_refsource_MLIST"],"url":"http://www.openwall.com/lists/oss-security/2021/07/06/2"},{"name":"FEDORA-2021-5af4452ffd","tags":["vendor-advisory","x_refsource_FEDORA"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TC4QB7TRS4GS7LDXQQ4PC6J3LVFJYISV/"}],"x_legacyV4Record":{"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":[{"name":"https://github.com/QubesOS/qubes-issues/issues/6595","refsource":"MISC","url":"https://github.com/QubesOS/qubes-issues/issues/6595"},{"name":"https://www.openwall.com/lists/oss-security/2021/06/05/1","refsource":"MISC","url":"https://www.openwall.com/lists/oss-security/2021/06/05/1"},{"name":"https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt","refsource":"MISC","url":"https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt"},{"name":"https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch","refsource":"MISC","url":"https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch"},{"name":"[oss-security] 20210611 Re: XScreenSaver 5.45: Disconnecting a video output can cause XScreenSaver to crash and unlock","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2021/06/11/1"},{"name":"[oss-security] 20210706 xscreensaver 5.45 crash","refsource":"MLIST","url":"http://www.openwall.com/lists/oss-security/2021/07/06/2"},{"name":"FEDORA-2021-5af4452ffd","refsource":"FEDORA","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TC4QB7TRS4GS7LDXQQ4PC6J3LVFJYISV/"}]}}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T00:12:50.416Z"},"title":"CVE Program Container","references":[{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/QubesOS/qubes-issues/issues/6595"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://www.openwall.com/lists/oss-security/2021/06/05/1"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txt"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patch"},{"name":"[oss-security] 20210611 Re: XScreenSaver 5.45: Disconnecting a video output can cause XScreenSaver to crash and unlock","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2021/06/11/1"},{"name":"[oss-security] 20210706 xscreensaver 5.45 crash","tags":["mailing-list","x_refsource_MLIST","x_transferred"],"url":"http://www.openwall.com/lists/oss-security/2021/07/06/2"},{"name":"FEDORA-2021-5af4452ffd","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TC4QB7TRS4GS7LDXQQ4PC6J3LVFJYISV/"}]}]},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2021-34557","datePublished":"2021-06-10T15:54:35.000Z","dateReserved":"2021-06-10T00:00:00.000Z","dateUpdated":"2024-08-04T00:12:50.416Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"}