Alpine: multiple xscreensaver packages: security update to 5.45-r0 (deprecated)

medium Tenable Self-Hosted Container Security Plugin ID 409876

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- 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.
(CVE-2021-34557)

Plugin Details

Severity: Medium

ID: 409876

Version: Revision 1.25

Type: Local

Family: Alpine Linux Local Security Checks

Published: 11/3/2022

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.18

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2021-34557

CVSS v3

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 4.2

Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/16/2022

Vulnerability Publication Date: 6/10/2021

Reference Information

CVE: CVE-2021-34557

Detections

Analytics