What is the CVSS score of CVE-2020-27837?

CVE-2020-27837 has a CVSS 3.1 base score of 6.4 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2020-27837?

Yes, a patch is available for CVE-2020-27837. Update the affected software to the latest version immediately.

Gnome Display Manager CVE-2020-27837

MEDIUM

Race Condition (CWE-362)

2020-12-28 secalert@redhat.com

Race Condition Authentication Bypass Gnome Display Manager

6.4

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.4 MEDIUM

AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 28, 2020 - 19:15 nvd

MEDIUM 6.4

DescriptionNVD

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.

AnalysisAI

A flaw was found in GDM in versions prior to 3.38.2.1. Rated medium severity (CVSS 6.4), this vulnerability is no authentication required.

Technical ContextAI

This vulnerability is classified under CWE-362. 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 products include: Gnome Gnome Display Manager. Version information: prior to 3.38.2.1..

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.