CVE-2019-3825

Description

A vulnerability was discovered in gdm before 3.31.4. When timed login is enabled in configuration, an attacker could bypass the lock screen by selecting the timed login user and waiting for the timer to expire, at which time they would gain access to the logged-in user's session.

CVSS Metrics

• v3.0•MEDIUM•Score: 6.3CVSS:3.0/AV:P/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
• v3.0•MEDIUM•Score: 6.4CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
• v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.07%• Percentile: 23%

Techniques & Countermeasures

• CWE-287•Improper Authentication

  When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Systems

• canonical•ubuntu_linux

  18.04 | 18.10

• gnome•gnome_display_manager

  < 3.31.4

• redhat•enterprise_linux

  7.0

• the gnome projectr•gdm

  3.31.4

References (2)

• https://usn.ubuntu.com/3892-1/
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3825