CVE-2020-28049
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-28049
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-28049.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2020-28049
- Downstream
- Related
- Published
- 2020-11-04T19:15:12.137Z
- Modified
- 2025-11-14T11:03:08.495978Z
- Severity
-
- 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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.
- References
-
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/
- 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://security.gentoo.org/glsa/202402-02
- https://www.debian.org/security/2020/dsa-4783