PT-2017-18610 · Red Hat+1 · Systemd+3

Tyler Hicks · Published 2017-05-12 · Updated 2019-10-03 · CVE-2017-8900

Positive Technologies (AI Summary)

CVSS v3.1

4.6

Medium

Base vector

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions LightDM versions prior to 1.22.0

Description The issue allows physically proximate attackers to bypass intended AppArmor restrictions and visit the home directories of arbitrary users by establishing a guest session, specifically when systemd is used in Ubuntu 16.10 and 17.x.

Recommendations For LightDM versions prior to 1.22.0, update to version 1.22.0 or later to resolve the issue.

Fix

Related Identifiers

CVE-2017-8900

Affected Products

Apparmor

Lightdm

Ubuntu

Systemd

References · 7

• https://launchpad.net/bugs/1663157 · Vendor Advisory
• https://ubuntu.com/usn/usn-3285-1 · Vendor Advisory
• https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-8900 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-8900 · Security Note
• https://ubuntu.com/security/notices/USN-3285-1 · Vendor Advisory
• http://securityfocus.com/bid/98554 · Note