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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-11-04T00:00:00

Updated: 2024-08-04T16:33:56.915Z

Reserved: 2020-11-02T00:00:00

Link: CVE-2020-28049

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-11-04T19:15:12.137

Modified: 2024-02-03T07:15:14.473

Link: CVE-2020-28049

cve-icon Redhat

No data.