CVE-2020-28049

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.

Risk Information

Base Score

6.3

MODERATE

Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Score

Exploitation Probability

0.037

Associated Vulnerability

Vulnerability	OS Platform
sddm security update(DSA-4783-1) sddm_0.18.0-1+deb10u1_i386.deb	Linux
sddm security update(DSA-4783-1) sddm_0.18.0-1+deb10u1_amd64.deb	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234