PT-2018-12461 · Kde+2 · Sddm+2

Vogtinator · Published 2018-07-17 · Updated 2024-06-15 · CVE-2018-14345

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions SDDM versions prior to 0.17.0

Description An issue was discovered where the password is not checked for users with an already existing session if SDDM is configured with ReuseSession=true. This allows any user with access to the system D-Bus to unlock any graphical session. The issue is related to the files daemon/Display.cpp and helper/backend/PamBackend.cpp.

Recommendations For SDDM versions prior to 0.17.0, consider setting ReuseSession=false as a temporary workaround to prevent unauthorized access to graphical sessions. Restrict access to the system D-Bus to minimize the risk of exploitation.

Fix

Insufficient Session Expiration

Improper Authentication

Weakness Enumeration

CWE-613

CWE-287

Related Identifiers

ALT-PU-2019-1179

CVE-2018-14345

OPENSUSE-SU-2018_2310-1

OPENSUSE-SU-2024:11376-1

Affected Products

Alt Linux

Sddm

Suse

References · 12

• https://github.com/sddm/sddm/commit/147cec383892d143b5e02daa70f1e7def50f5d98 · Patch
• https://cve.org/CVERecord?id=CVE-2018-14345 · Security Note
• https://bugzilla.suse.com/show_bug.cgi?id=1101450 · Patch
• https://osv.dev/vulnerability/CVE-2018-14345 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-14345 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-14345 · Security Note
• https://ubuntu.com/security/CVE-2018-14345 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-14345 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-14345 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11376-1 · Vendor Advisory
• https://suse.com/security/cve/CVE-2018-14345 · Note
• https://suse.com/security/cve/CVE-2020-28049 · Note