Auth bypass in Sddm Project
CVE-2018-14345
An issue was discovered in SDDM through 0.17.0. If configured with ReuseSession=true, the password is not checked for users with an already existing session. Any user with access to the system D-Bus can therefore unlock any graphical session. This is related to daemon/Display.cpp and helper/backend/PamBackend.cpp.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (66.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 66.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.012 · change: +0.002
Affected products
Weakness classification (CWE)
References
- bugzilla.suse.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-14345?
- CVE-2018-14345 is a high-severity vulnerability in Sddm Project, classified under Improper Authentication. CVSS score: 7.5/10. Published 2018-07-17.
- How severe is CVE-2018-14345?
- High severity. CVSS v3 base score is 7.5 out of 10.