Upstream information

CVE-2020-27837 at MITRE

Description

A flaw was found in GDM in versions prior to 3.38.2.1. A race condition in the handling of session shutdown makes it possible to bypass the lock screen for a user that has autologin enabled, accessing their session without authentication. This is similar to CVE-2017-12164, but requires more difficult conditions to exploit.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having low severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4.4
Vector AV:L/AC:M/Au:N/C:P/I:P/A:P
Access Vector Local
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.4 3.1
Vector CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack Vector Physical Physical
Attack Complexity High High
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High Low
Integrity Impact High Low
Availability Impact High None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1180206 [RESOLVED / FIXED]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Desktop 15 SP4
SUSE Linux Enterprise High Performance Computing 15 SP4
SUSE Linux Enterprise Module for Desktop Applications 15 SP4
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Manager Proxy 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Server 4.3
  • gdm >= 41.3-150400.2.7
  • gdm-devel >= 41.3-150400.2.7
  • gdm-lang >= 41.3-150400.2.7
  • gdm-schema >= 41.3-150400.2.7
  • gdm-systemd >= 41.3-150400.2.7
  • gdmflexiserver >= 41.3-150400.2.7
  • libgdm1 >= 41.3-150400.2.7
  • typelib-1_0-Gdm-1_0 >= 41.3-150400.2.7
 Patchnames:
SUSE Linux Enterprise Module for Desktop Applications 15 SP4 GA gdm-41.3-150400.2.7
SUSE Linux Enterprise Desktop 15 SP5
SUSE Linux Enterprise High Performance Computing 15 SP5
SUSE Linux Enterprise Module for Desktop Applications 15 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • gdm >= 41.3-150400.4.6.1
  • gdm-devel >= 41.3-150400.4.6.1
  • gdm-lang >= 41.3-150400.4.6.1
  • gdm-schema >= 41.3-150400.4.6.1
  • gdm-systemd >= 41.3-150400.4.6.1
  • gdmflexiserver >= 41.3-150400.4.6.1
  • libgdm1 >= 41.3-150400.4.6.1
  • typelib-1_0-Gdm-1_0 >= 41.3-150400.4.6.1
 Patchnames:
SUSE Linux Enterprise Module for Desktop Applications 15 SP5 GA gdm-41.3-150400.4.6.1
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Module for Desktop Applications 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • gdm >= 45.0.1-150600.4.3
  • gdm-devel >= 45.0.1-150600.4.3
  • gdm-lang >= 45.0.1-150600.4.3
  • gdm-schema >= 45.0.1-150600.4.3
  • gdm-systemd >= 45.0.1-150600.4.3
  • gdmflexiserver >= 45.0.1-150600.4.3
  • libgdm1 >= 45.0.1-150600.4.3
  • typelib-1_0-Gdm-1_0 >= 45.0.1-150600.4.3
 Patchnames:
SUSE Linux Enterprise Module for Desktop Applications 15 SP6 GA gdm-45.0.1-150600.4.3
openSUSE Leap 15.4
  • gdm >= 41.3-150400.2.7
  • gdm-lang >= 41.3-150400.2.7
  • gdm-schema >= 41.3-150400.2.7
  • gdmflexiserver >= 41.3-150400.2.7
  • libgdm1 >= 41.3-150400.2.7
  • typelib-1_0-Gdm-1_0 >= 41.3-150400.2.7
 Patchnames:
openSUSE Leap 15.4 GA gdm-41.3-150400.2.7
openSUSE Tumbleweed
  • gdm >= 41.0-1.1
  • gdm-branding-upstream >= 41.0-1.1
  • gdm-devel >= 41.0-1.1
  • gdm-lang >= 41.0-1.1
  • gdm-systemd >= 41.0-1.1
  • gdmflexiserver >= 41.0-1.1
  • libgdm1 >= 41.0-1.1
  • typelib-1_0-Gdm-1_0 >= 41.0-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-11547

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. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP5 gdm Already fixed
SUSE Linux Enterprise Desktop 15 SP6 gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP5 gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP6 gdm Already fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP5 gdm Already fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP6 gdm Already fixed
SUSE Linux Enterprise Server 15 SP5 gdm Already fixed
SUSE Linux Enterprise Server 15 SP5-LTSS gdm Already fixed
SUSE Linux Enterprise Server 15 SP6 gdm Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP5 gdm Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP6 gdm Already fixed
SUSE Manager Proxy 4.3 gdm Already fixed
SUSE Manager Retail Branch Server 4.3 gdm Already fixed
SUSE Manager Server 4.3 gdm Already fixed
openSUSE Leap 15.5 gdm Already fixed
openSUSE Leap 15.6 gdm Already fixed
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise Desktop 15 SP4 gdm Already fixed
SUSE Linux Enterprise High Performance Computing 12 SP5 gdm Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS gdm Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS gdm Already fixed
SUSE Linux Enterprise Module for Desktop Applications 15 SP2 gdm Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP3 gdm Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP4 gdm Already fixed
SUSE Linux Enterprise Server 12 SP5 gdm Not affected
SUSE Linux Enterprise Server 12 SP5-LTSS gdm Not affected
SUSE Linux Enterprise Server 15 SP2 gdm Affected
SUSE Linux Enterprise Server 15 SP2-LTSS gdm Affected
SUSE Linux Enterprise Server 15 SP3 gdm Affected
SUSE Linux Enterprise Server 15 SP3-LTSS gdm Affected
SUSE Linux Enterprise Server 15 SP4 gdm Already fixed
SUSE Linux Enterprise Server 15 SP4-LTSS gdm Already fixed
SUSE Linux Enterprise Server 15-ESPOS gdm Unsupported
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 gdm Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 gdm Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP3 gdm Affected
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 gdm Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 gdm Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 gdm Already fixed
Products past their end of life and not receiving proactive updates anymore.
HPE Helion OpenStack 8 gdm Not affected
SUSE CaaS Platform 4.0 gdm Affected
SUSE CaaS Platform 4.5 gdm Affected
SUSE Enterprise Storage 5 gdm Unsupported
SUSE Enterprise Storage 6 gdm Affected
SUSE Enterprise Storage 7 gdm Affected
SUSE Enterprise Storage 7.1 gdm Affected
SUSE Linux Enterprise Desktop 11 SP2 gdm Not affected
SUSE Linux Enterprise Desktop 11 SP3 gdm Not affected
SUSE Linux Enterprise Desktop 11 SP4 gdm Not affected
SUSE Linux Enterprise Desktop 12 SP2 gdm Not affected
SUSE Linux Enterprise Desktop 12 SP3 gdm Not affected
SUSE Linux Enterprise Desktop 12 SP4 gdm Not affected
SUSE Linux Enterprise Desktop 15 gdm Affected
SUSE Linux Enterprise Desktop 15 SP1 gdm Affected
SUSE Linux Enterprise Desktop 15 SP2 gdm Affected
SUSE Linux Enterprise Desktop 15 SP3 gdm Affected
SUSE Linux Enterprise High Performance Computing 15 gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS gdm Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS gdm Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS gdm Unsupported
SUSE Linux Enterprise Module for Desktop Applications 15 gdm Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP1 gdm Affected
SUSE Linux Enterprise Point of Sale 11 SP3 gdm Not affected
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT gdm Not affected
SUSE Linux Enterprise Point of Service 11 SP3 gdm Not affected
SUSE Linux Enterprise Point of Service Image Server 12 SP2 gdm Unsupported
SUSE Linux Enterprise Real Time 15 SP2 gdm Affected
SUSE Linux Enterprise Real Time 15 SP3 gdm Affected
SUSE Linux Enterprise Real Time 15 SP4 gdm Already fixed
SUSE Linux Enterprise Server 11 SP1 gdm Unsupported
SUSE Linux Enterprise Server 11 SP1-LTSS gdm Not affected
SUSE Linux Enterprise Server 11 SP2 gdm Not affected
SUSE Linux Enterprise Server 11 SP2-LTSS gdm Not affected
SUSE Linux Enterprise Server 11 SP3 gdm Unsupported
SUSE Linux Enterprise Server 11 SP3-LTSS gdm Not affected
SUSE Linux Enterprise Server 11 SP4 gdm Not affected
SUSE Linux Enterprise Server 11 SP4 LTSS gdm Not affected
SUSE Linux Enterprise Server 11 SP4-LTSS gdm Unsupported
SUSE Linux Enterprise Server 12 SP2 gdm Not affected
SUSE Linux Enterprise Server 12 SP2-BCL gdm Not affected
SUSE Linux Enterprise Server 12 SP2-ESPOS gdm Unsupported
SUSE Linux Enterprise Server 12 SP2-LTSS gdm Not affected
SUSE Linux Enterprise Server 12 SP3 gdm Not affected
SUSE Linux Enterprise Server 12 SP3-BCL gdm Not affected
SUSE Linux Enterprise Server 12 SP3-ESPOS gdm Not affected
SUSE Linux Enterprise Server 12 SP3-LTSS gdm Not affected
SUSE Linux Enterprise Server 12 SP4 gdm Not affected
SUSE Linux Enterprise Server 12 SP4-ESPOS gdm Not affected
SUSE Linux Enterprise Server 12 SP4-LTSS gdm Not affected
SUSE Linux Enterprise Server 15 gdm Affected
SUSE Linux Enterprise Server 15 SP1 gdm Affected
SUSE Linux Enterprise Server 15 SP1-BCL gdm Affected
SUSE Linux Enterprise Server 15 SP1-LTSS gdm Affected
SUSE Linux Enterprise Server 15 SP2-BCL gdm Affected
SUSE Linux Enterprise Server 15 SP3-BCL gdm Affected
SUSE Linux Enterprise Server 15-LTSS gdm Unsupported
SUSE Linux Enterprise Server for Raspberry Pi 12 SP2 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 gdm Unsupported
SUSE Linux Enterprise Server for SAP Applications 12 SP3 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 15 gdm Unsupported
SUSE Linux Enterprise Server for SAP Applications 15 SP1 gdm Affected
SUSE Linux Enterprise Software Development Kit 12 SP2 gdm Not affected
SUSE Linux Enterprise Software Development Kit 12 SP3 gdm Not affected
SUSE Linux Enterprise Software Development Kit 12 SP4 gdm Not affected
SUSE Linux Enterprise Software Development Kit 12 SP5 gdm Not affected
SUSE Manager Proxy 4.0 gdm Affected
SUSE Manager Proxy 4.1 gdm Affected
SUSE Manager Proxy 4.2 gdm Affected
SUSE Manager Retail Branch Server 4.0 gdm Affected
SUSE Manager Retail Branch Server 4.1 gdm Affected
SUSE Manager Retail Branch Server 4.2 gdm Affected
SUSE Manager Server 4.0 gdm Affected
SUSE Manager Server 4.1 gdm Affected
SUSE Manager Server 4.2 gdm Affected
SUSE OpenStack Cloud 7 gdm Not affected
SUSE OpenStack Cloud 8 gdm Not affected
SUSE OpenStack Cloud 9 gdm Not affected
SUSE OpenStack Cloud Crowbar 8 gdm Not affected
SUSE OpenStack Cloud Crowbar 9 gdm Not affected
openSUSE Leap 15.3 gdm Affected
openSUSE Leap 15.4 gdm Already fixed

SUSE Timeline for this CVE

CVE page created: Wed Dec 16 11:25:16 2020
CVE page last modified: Fri Dec 20 23:18:28 2024