Race Condition Vulnerability in GDM Affecting GNOME Display Manager
CVE-2020-27837

6.4MEDIUM

Key Information:

Vendor

Gnome
Status
Gdm
Vendor
CVE Published:
28 December 2020

What is CVE-2020-27837?

A race condition has been identified in the GNOME Display Manager (GDM) that affects versions prior to 3.38.2.1. This flaw allows users with autologin enabled to bypass the lock screen, thus gaining unauthorized access to their session without the need for authentication. Exploiting this vulnerability necessitates a specific set of conditions, though it is reminiscent of previous vulnerabilities like CVE-2017-12164. It highlights significant security considerations for systems utilizing GDM.

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Affected Version(s)

gdm prior to 3.38.2.1

References

https://bugzilla.redhat.com/show_bug.cgi?id=1906812
x_refsource_MISC

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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