VDB
CVE-2020-28049
CVE-2020-28049
PUBLISHED
CVSS 6.300000190734863 MEDIUM
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.
EPSS 0.42% · 34.8th percentile
Risk Scores
CVSS 3.1
6.300000190734863
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS Score
0.42%
34.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | sddm | 0.13.0-1ubuntu3, 0.13.0-1ubuntu4, 0.13.0-1ubuntu5 |
| Ubuntu:20.04:LTS | sddm | 0, 0.18.0-1ubuntu2, 0.18.1-1ubuntu2 |
| Ubuntu:18.04:LTS | sddm | 0, 0.14.0-4ubuntu1, 0.14.0-4ubuntu2 |
Timeline
- Nov 4, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 1, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 4, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-28049 third-party-advisory
- https://www.openwall.com/lists/oss-security/2020/11/04/2 third-party-advisory
- https://github.com/sddm/sddm/commit/be202f533ab98a684c6a007e8d5b4357846bc222 third-party-advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1177201 third-party-advisory
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049 third-party-advisory
- https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog third-party-advisory
- https://github.com/sddm/sddm/releases third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-28049 third-party-advisory