Information Exposure The advisory has been revoked - it doesn't affect any version of package systemd Open this link in a new tab
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snyk-id
SNYK-UBUNTU1604-SYSTEMD-346739
-
published
17 May 2019
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disclosed
17 May 2019
Introduced: 17 May 2019
CVE-2018-20839 Open this link in a new tabAmendment
The Ubuntu
security team deemed this advisory irrelevant for Ubuntu:16.04
.
NVD Description
Note: Versions mentioned in the description apply to the upstream systemd
package.
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.