CVE-2020-16125

MediumCVSS 6.8/10Last modified Jun 17, 2026

Description

gdm3 versions before 3.36.2 or 3.38.2 would start gnome-initial-setup if gdm3 can't contact the accountservice service via dbus in a timely manner; on Ubuntu (and potentially derivatives) this could be be chained with an additional issue that could allow a local user to create a new privileged account.

Metrics

CVSS 3.1 6.8/10CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-754

Affected software

Vendor	Product	Versions
Gnome	GDM3	>= 3.36, < 3.36.4; >= 3.38, < 3.38.2

References

https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314Third Party Advisory
https://gitlab.gnome.org/GNOME/gdm/-/issues/642Exploit, Vendor Advisory
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemonExploit, Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314Third Party Advisory
https://gitlab.gnome.org/GNOME/gdm/-/issues/642Exploit, Vendor Advisory
https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemonExploit, Third Party Advisory

Timeline

Published: Nov 10, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

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