CVE-2020-28049
- State
- Published
- Severity
- 6.3 Medium
- Published
- Nov 4, 2020
- Updated
- Oct 15, 2024
- Reserved
- Nov 2, 2020
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.3 Medium | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | CISA-ADP |
Weaknesses
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://github.com/sddm/sddm/releases
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049
- https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog
- DSA-4783vendor-advisory
- [debian-lts-announce] 20201106 [SECURITY] [DLA 2436-1] sddm security updatemailing-list
- openSUSE-SU-2020:1870vendor-advisory
- FEDORA-2021-7066b95c99vendor-advisory
- GLSA-202402-02vendor-advisory
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