| Name | CVE-2017-8900 |
| Description | LightDM through 1.22.0, when systemd is used in Ubuntu 16.10 and 17.x, allows physically proximate attackers to bypass intended AppArmor restrictions and visit the home directories of arbitrary users by establishing a guest session. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| lightdm (PTS) | buster | 1.26.0-4 | fixed |
| bullseye | 1.26.0-7 | fixed |
| bookworm | 1.26.0-8 | fixed |
| trixie | 1.32.0-4 | fixed |
| sid | 1.32.0-5 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| lightdm | source | (unstable) | (not affected) | | | |
Notes
- lightdm <not-affected> (No guest account support in Debian, cf. #661230)