Upstream information

CVE-2021-34557 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 2.1
Vector AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 4.6 6.4
Vector CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Access Vector Physical Physical
Access Complexity Low High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None High
Integrity Impact None High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1186918 [IN_PROGRESS]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP3
SUSE Linux Enterprise High Performance Computing 15 SP3
SUSE Linux Enterprise Module for Basesystem 15 SP3
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server for SAP Applications 15 SP3
SUSE Linux Enterprise Storage 7.1
SUSE Manager Proxy 4.2
SUSE Manager Retail Branch Server 4.2
SUSE Manager Server 4.2
  • xscreensaver >= 5.44-150000.5.6.1
  • xscreensaver-data >= 5.44-150000.5.6.1
  • xscreensaver-lang >= 5.44-150000.5.6.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP3-2022-2641
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • xscreensaver >= 5.22-8.3.1
  • xscreensaver-data >= 5.22-8.3.1
Patchnames:
SUSE-SLE-SERVER-12-SP5-2022-2642
openSUSE Leap 15.3
  • xscreensaver >= 5.44-150000.5.6.1
  • xscreensaver-data >= 5.44-150000.5.6.1
  • xscreensaver-data-extra >= 5.44-150000.5.6.1
  • xscreensaver-lang >= 5.44-150000.5.6.1
Patchnames:
openSUSE-SLE-15.3-2022-2641


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
HPE Helion OpenStack 8 xscreensaver In progress
SUSE CaaS Platform 4.0 xscreensaver In progress
SUSE CaaS Platform 4.5 xscreensaver Affected
SUSE Enterprise Storage 6 xscreensaver In progress
SUSE Enterprise Storage 7 xscreensaver In progress
SUSE Linux Enterprise Desktop 15 SP2 xscreensaver Affected
SUSE Linux Enterprise Desktop 15 SP3 xscreensaver Released
SUSE Linux Enterprise Desktop 15 SP4 xscreensaver Not affected
SUSE Linux Enterprise High Performance Computing 12 SP5 xscreensaver Released
SUSE Linux Enterprise High Performance Computing 15 LTSS xscreensaver In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS xscreensaver In progress
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS xscreensaver In progress
SUSE Linux Enterprise High Performance Computing 15 SP2 xscreensaver Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 ESPOS xscreensaver In progress
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS xscreensaver In progress
SUSE Linux Enterprise High Performance Computing 15 SP3 xscreensaver Released
SUSE Linux Enterprise High Performance Computing 15 SP4 xscreensaver Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 xscreensaver Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 xscreensaver Released
SUSE Linux Enterprise Module for Basesystem 15 SP4 xscreensaver Not affected
SUSE Linux Enterprise Point of Service 11 SP3 xscreensaver Affected
SUSE Linux Enterprise Real Time 15 SP2 xscreensaver Affected
SUSE Linux Enterprise Server 11 SP1 xscreensaver Unsupported
SUSE Linux Enterprise Server 11 SP3 xscreensaver Unsupported
SUSE Linux Enterprise Server 11 SP4 LTSS xscreensaver Affected
SUSE Linux Enterprise Server 12 SP2 BCL xscreensaver In progress
SUSE Linux Enterprise Server 12 SP3 BCL xscreensaver In progress
SUSE Linux Enterprise Server 12 SP3 ESPOS xscreensaver In progress
SUSE Linux Enterprise Server 12 SP3 LTSS xscreensaver In progress
SUSE Linux Enterprise Server 12 SP4 ESPOS xscreensaver In progress
SUSE Linux Enterprise Server 12 SP4 LTSS xscreensaver In progress
SUSE Linux Enterprise Server 12 SP5 xscreensaver Released
SUSE Linux Enterprise Server 15 ESPOS xscreensaver In progress
SUSE Linux Enterprise Server 15 LTSS xscreensaver In progress
SUSE Linux Enterprise Server 15 SP1 LTSS xscreensaver In progress
SUSE Linux Enterprise Server 15 SP2 xscreensaver Affected
SUSE Linux Enterprise Server 15 SP2 LTSS xscreensaver In progress
SUSE Linux Enterprise Server 15 SP3 xscreensaver Released
SUSE Linux Enterprise Server 15 SP4 xscreensaver Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 xscreensaver In progress
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP3 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP4 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP5 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 15 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP1 xscreensaver In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP2 xscreensaver Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 xscreensaver Released
SUSE Linux Enterprise Server for SAP Applications 15 SP4 xscreensaver Not affected
SUSE Linux Enterprise Storage 7 xscreensaver Affected
SUSE Linux Enterprise Storage 7.1 xscreensaver Released
SUSE Manager Proxy 4.0 xscreensaver Affected
SUSE Manager Proxy 4.1 xscreensaver Affected
SUSE Manager Proxy 4.2 xscreensaver Released
SUSE Manager Proxy 4.3 xscreensaver Not affected
SUSE Manager Retail Branch Server 4.0 xscreensaver Affected
SUSE Manager Retail Branch Server 4.1 xscreensaver Affected
SUSE Manager Retail Branch Server 4.2 xscreensaver Released
SUSE Manager Retail Branch Server 4.3 xscreensaver Not affected
SUSE Manager Server 4.0 xscreensaver Affected
SUSE Manager Server 4.1 xscreensaver Affected
SUSE Manager Server 4.2 xscreensaver Released
SUSE Manager Server 4.3 xscreensaver Not affected
SUSE OpenStack Cloud 8 xscreensaver In progress
SUSE OpenStack Cloud 9 xscreensaver In progress
SUSE OpenStack Cloud Crowbar 8 xscreensaver In progress
SUSE OpenStack Cloud Crowbar 9 xscreensaver In progress