CVE-2017-8900

NameCVE-2017-8900
DescriptionLightDM 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
NVD severitylow (attack range: local)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lightdm (PTS)wheezy1.2.2-4fixed
jessie1.10.3-3fixed
stretch1.18.3-1fixed
buster, sid1.18.3-4fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
lightdmsource(unstable)(not affected)

Notes

- lightdm <not-affected> (No guest account support in Debian, cf. #661230)

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