CVEvulnerability

CVE-2020-27837

6.4 MEDIUM Published 2020-12-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-12-28
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.4 MEDIUM — CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
4.4 MEDIUM — AV:L/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-362

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.

Affected configurations

• gnome gnome display manager (< 3.38.2.1)

Related

Weakness · CWE (1)

  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization weakness

References