Vulnerability Details : 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 category: BypassGain privilege
Products affected by CVE-2018-14345
- cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-14345
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-14345
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
CWE ids for CVE-2018-14345
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
-
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-14345
-
https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98
Fix authentication when reusing an existing session · sddm/sddm@147cec3 · GitHubPatch;Third Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=1101450
Bug 1101450 – VUL-0: CVE-2018-14345: sddm: unlock existing sessions without authentication if ReuseSession=trueIssue Tracking;Patch;Third Party Advisory
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