MEDIUM6.8
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.
CVSS 2.0MEDIUM 4.6
CVSS:2.0/AV:L/AC:L/Au:N/C:P/I:P/A:PCVSS 3.xMEDIUM 6.8
CVSS:3.x/CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HReferences
- https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314
- https://gitlab.gnome.org/GNOME/gdm/-/issues/642
- https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon
- https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1900314
- https://gitlab.gnome.org/GNOME/gdm/-/issues/642
- https://securitylab.github.com/advisories/GHSL-2020-202-gdm3-LPE-unresponsive-accounts-daemon