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CVE-2017-12164

gdm: lock screen can be circumvented when autologin is set

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Severity

Moderate

Red Hat Product Security

4.1

CVSS 3.0

Review impact separately from score.

Published · June 14, 2017

Updated · June 30, 2026

Description

A flaw was discovered in the gdm where gdm greeter was no longer setting the ran_once boolean during autologin. If autologin was enable for a victim, an attacker could simply select 'login as another user' to unlock their screen.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.1
CVSS:3.0/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

CWE-287 · Improper Authentication