| Name | CVE-2017-12164 |
| Description | 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. |
| 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 |
|---|
| gdm3 (PTS) | jessie, jessie (lts) | 3.14.1-7+deb8u1 | fixed |
| stretch (security), stretch (lts), stretch | 3.22.3-3+deb9u3 | fixed |
| buster | 3.30.2-3 | fixed |
| bullseye | 3.38.2.1-1 | fixed |
| bookworm | 43.0-3 | fixed |
| sid, trixie | 47.0-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| gdm3 | source | wheezy | (not affected) | | | |
| gdm3 | source | jessie | (not affected) | | | |
| gdm3 | source | stretch | (not affected) | | | |
| gdm3 | source | (unstable) | 3.26.0-1 | | | |
Notes
[stretch] - gdm3 <not-affected> (Vulnerable code not present)
[jessie] - gdm3 <not-affected> (Vulnerable code not present)
[wheezy] - gdm3 <not-affected> (Vulnerable code not present)
https://bugzilla.redhat.com/show_bug.cgi?id=1490417
Introduced in https://git.gnome.org/browse/gdm/commit/?id=ff98b28