CVE-2021-34557
PoC ×3—CVSS 3.1
4.6 medium
EPSS
<1%p40
Published
()
Modified
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.
- Vendors
- xscreensaver projectfedoraproject
- Products
- xscreensaver, fedora
- Weakness
- CWE-120
- Vector
- CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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