Vulnerability in Lightdm Project
CVE-2017-8900
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Lightdm Project
- Canonical Ubuntu Linux — versions 16.10, 17.04
References
- www.securityfocus.com/bid/98554 (VDB Entry, Third Party Advisory, vdb-entry)
- www.ubuntu.com/usn/usn-3285-1/ (Patch, Vendor Advisory)
- people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-8900.html (Patch, Vendor Advisory)
- launchpad.net/bugs/1663157 (Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-8900?
- CVE-2017-8900 is a medium-severity vulnerability in Lightdm Project. CVSS score: 4.6/10. Published 2017-05-12.
- How severe is CVE-2017-8900?
- Medium severity. CVSS v3 base score is 4.6 out of 10.