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: Pending

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
Access Vector Physical Physical
Access 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 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
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 GA gdm-41.0-1.1


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Please note that this evaluation state might be work in progress, incomplete or outdated.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 gdm Not affected
SUSE Enterprise Storage 5 gdm Unsupported
SUSE Linux Enterprise High Performance Computing 12 SP5 gdm Not affected
SUSE Linux Enterprise High Performance Computing 15 LTSS gdm Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS gdm Affected
SUSE Linux Enterprise Module for Desktop Applications 15 SP1 gdm Unsupported
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 Point of Service 11 SP3 gdm Not affected
SUSE Linux Enterprise Point of Service Image Server 12 SP2 gdm Unsupported
SUSE Linux Enterprise Server 11 SP1 gdm Analysis
SUSE Linux Enterprise Server 11 SP3 gdm Analysis
SUSE Linux Enterprise Server 11 SP4 gdm Analysis
SUSE Linux Enterprise Server 11 SP4 LTSS 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 ESPOS gdm Not affected
SUSE Linux Enterprise Server 12 SP3 LTSS 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 12 SP5 gdm Not affected
SUSE Linux Enterprise Server 15 ESPOS gdm Affected
SUSE Linux Enterprise Server 15 LTSS gdm Affected
SUSE Linux Enterprise Server BCL 12 SP2 gdm Not affected
SUSE Linux Enterprise Server BCL 12 SP3 gdm Not affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 gdm Analysis
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 12 SP5 gdm Not affected
SUSE Linux Enterprise Server for SAP Applications 15 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