6.3

CVE-2020-28049

Exploit
An issue was discovered in SDDM before 0.19.0. It incorrectly starts the X server in a way that - for a short time period - allows local unprivileged users to create a connection to the X server without providing proper authentication. A local attacker can thus access X server display contents and, for example, intercept keystrokes or access the clipboard. This is caused by a race condition during Xauthority file creation.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Sddm Project ≫ Sddm Version < 0.19.0
Opensuse ≫ Leap Version15.1
Opensuse ≫ Leap Version15.2
Debian ≫ Debian Linux Version9.0
Debian ≫ Debian Linux Version10.0
Fedoraproject ≫ Fedora Version33
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.42% 0.33
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
nvd@nist.gov 3.3 3.4 4.9
AV:L/AC:M/Au:N/C:P/I:P/A:N
134c704f-9b21-4f2e-91b3-4a467353bcc0 6.3 1 5.2
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html
Third Party Advisory
Mailing List
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049
Third Party Advisory
Exploit
Issue Tracking
https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog
Third Party Advisory
Release Notes
https://github.com/sddm/sddm/releases
Third Party Advisory
Release Notes
https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html
Third Party Advisory
Mailing List
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/
https://security.gentoo.org/glsa/202402-02
https://www.debian.org/security/2020/dsa-4783
Third Party Advisory