CVE-2020-28049
Severity CVSS v4.0:
Pending analysis
Type:
CWE-362
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Publication date:
04/11/2020
Last modified:
15/10/2024
Description
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.
Impact
Base Score 3.x
6.30
Severity 3.x
MEDIUM
Base Score 2.0
3.30
Severity 2.0
LOW
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:* | 0.19.0 (excluding) | |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | ||
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049
- https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog
- https://github.com/sddm/sddm/releases
- https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html
- 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