CVE-2020-16125

Name	CVE-2020-16125
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2434-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gdm3 (PTS)	bullseye	3.38.2.1-1	fixed
	bookworm	43.0-3	fixed
	trixie	48.0-2	fixed
	forky, sid	48.0-3	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gdm3	source	stretch	3.22.3-3+deb9u3		DLA-2434-1
gdm3	source	(unstable)	3.38.2-1

Notes

[buster] - gdm3 <no-dsa> (Minor issue on Debian)
https://github.com/GNOME/gdm/commit/dc8235128c3a1fcd5da8f30ab6839d413d353f28
https://gitlab.gnome.org/GNOME/gdm/-/issues/642