Security Advisory
CVE-2021-34557
4.6
MEDIUM
Vulnerability Description
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.
Published Date
June 10, 2021
Official Source
NIST NVD Advisory