Race Condition Affecting gdm package, versions [,3.38.2.1)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.23% (14th percentile)

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  • Snyk IDSNYK-UNMANAGED-GDM-2370045
  • published26 Jan 2022
  • disclosed28 Dec 2020
  • creditUnknown

Introduced: 28 Dec 2020

CVE-2020-27837  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade gdm to version 3.38.2.1 or higher.

Overview

Affected versions of this package are vulnerable to Race Condition. 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.

CVSS Base Scores

version 3.1