Description
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.
References (2)
Core 2
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.suse.com/show_bug.cgi?id=1101450
Patch, Third Party Advisory x_refsource_confirm
https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98
Scores
CVSS v3
7.5
EPSS
0.0024
EPSS Percentile
47.3%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-613
CWE-287
Status
published
Products (1)
sddm_project/sddm
< 0.17.0
Published
Jul 17, 2018
Tracked Since
Feb 18, 2026