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.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: mitre

Published: 2021-06-10T15:54:35

Updated: 2021-08-19T02:06:17

Reserved: 2021-06-10T00:00:00


Link: CVE-2021-34557

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2021-06-10T16:15:08.227

Modified: 2023-11-07T03:36:01.347


Link: CVE-2021-34557

JSON object: View

cve-icon Redhat Information

No data.

CWE