CVE-2020-28049
SDDM X Server Authentication Bypass
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.
INFO
Published Date :
Nov. 4, 2020, 7:15 p.m.
Last Modified :
Feb. 3, 2024, 7:15 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.0
Affected Products
The following products are affected by CVE-2020-28049
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-28049.
| URL | Resource |
|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html | Mailing List Third Party Advisory |
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049 | Exploit Issue Tracking Third Party Advisory |
| https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog | Release Notes Third Party Advisory |
| https://github.com/sddm/sddm/releases | Release Notes Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html | Mailing List Third Party Advisory |
| 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 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-28049 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-28049 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 03, 2024
Action Type Old Value New Value Added Reference MITRE https://security.gentoo.org/glsa/202402-02 [No types assigned] -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ [No types assigned] Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ -
Modified Analysis by [email protected]
Jan. 28, 2021
Action Type Old Value New Value Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jan. 26, 2021
Action Type Old Value New Value Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GT3EX5NSQJJAKY63ENSMEDX6NYZLYY3S/ [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 13, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html Mailing List, Third Party Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=CVE-2020-28049 Exploit, Issue Tracking, Third Party Advisory Changed Reference Type https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog No Types Assigned https://github.com/sddm/sddm/blob/v0.19.0/ChangeLog Release Notes, Third Party Advisory Changed Reference Type https://github.com/sddm/sddm/releases No Types Assigned https://github.com/sddm/sddm/releases Release Notes, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html Mailing List, Third Party Advisory Changed Reference Type https://www.debian.org/security/2020/dsa-4783 No Types Assigned https://www.debian.org/security/2020/dsa-4783 Third Party Advisory Added CWE NIST CWE-362 Added CPE Configuration OR *cpe:2.3:a:sddm_project:sddm:*:*:*:*:*:*:*:* versions up to (excluding) 0.19.0 Added CPE Configuration OR *cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* *cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Nov. 07, 2020
Action Type Old Value New Value Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00031.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 06, 2020
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2020/11/msg00009.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 05, 2020
Action Type Old Value New Value Added Reference https://www.debian.org/security/2020/dsa-4783 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-28049 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-28049
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile