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Improper Initialization Affecting gdm3 package, versions <3.26.0-1

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.08% (33rd percentile)
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NVD
6.4 medium
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Red Hat
4.1 medium

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  • Snyk ID SNYK-DEBIAN10-GDM3-353911
  • published 27 Jun 2018
  • disclosed 26 Jul 2018
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Introduced: 27 Jun 2018

CVE-2017-12164 Open this link in a new tab
CWE-665 Open this link in a new tab
CWE-592 Open this link in a new tab

How to fix?

Upgrade Debian:10 gdm3 to version 3.26.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gdm3 package and not the gdm3 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

A flaw was discovered in gdm 3.24.1 where gdm greeter was no longer setting the ran_once boolean during autologin. If autologin was enabled for a victim, an attacker could simply select 'login as another user' to unlock their screen.