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Alpine Linux: CVE-2021-34557: Classic Buffer Overflow

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Alpine Linux: CVE-2021-34557: Classic Buffer Overflow

Severity
2
CVSS
(AV:L/AC:L/Au:N/C:N/I:N/A:P)
Published
06/10/2021
Created
08/23/2024
Added
08/22/2024
Modified
08/23/2024

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.

Solution(s)

  • alpine-linux-upgrade-xscreensaver

References

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