This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2018-20839 →

DEBIAN-CVE-2018-20839

systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdo...

Original description

The description as published by the source.

systemd 242 changes the VT1 mode upon a logout, which allows attackers to read cleartext passwords in certain circumstances, such as watching a shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 plymouth

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.4-1"}]}]

Debian:13 plymouth

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.4-1"}]}]

Debian:14 plymouth

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.4-1"}]}]

References

advisory security-tracker.debian.org