Unrated severityNVD Advisory· Published May 17, 2019· Updated Aug 5, 2024
CVE-2018-20839
CVE-2018-20839
Description
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.
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Affected products
2- systemd/systemddescription
- Range: <=242
Patches
Vulnerability mechanics
References
6- www.securityfocus.com/bid/108389mitrevdb-entryx_refsource_BID
- bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993mitrex_refsource_MISC
- github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322fmitrex_refsource_MISC
- github.com/systemd/systemd/pull/12378mitrex_refsource_MISC
- lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3Emitremailing-listx_refsource_MLIST
- security.netapp.com/advisory/ntap-20190530-0002/mitrex_refsource_CONFIRM
News mentions
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