CVE-2017-12164

NameCVE-2017-12164
DescriptionA 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.
SourceCVE (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 PackageReleaseVersionStatus
gdm3 (PTS)bullseye3.38.2.1-1fixed
bookworm43.0-3fixed
sid, trixie47.0-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gdm3sourcewheezy(not affected)
gdm3sourcejessie(not affected)
gdm3sourcestretch(not affected)
gdm3source(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

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