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
EPSS: 0.010 (59.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Sddm_project Sddm
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_CONFIRM, 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.