Vulnerability Details 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 shutdown, or using Ctrl-Alt-F1 and Ctrl-Alt-F2. This occurs because the KDGKBMODE (aka current keyboard mode) check is mishandled.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 55.9%
CVSS Severity
CVSS v3 Score 4.3
CVSS v2 Score 4.3
References
- http://www.securityfocus.com/bid/108389
- https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993
- https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f
- https://github.com/systemd/systemd/pull/12378
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190530-0002/
- http://www.securityfocus.com/bid/108389
- https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993
- https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f
- https://github.com/systemd/systemd/pull/12378
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://security.netapp.com/advisory/ntap-20190530-0002/
Products affected by CVE-2018-20839
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cpe:2.3:a:netapp:snapprotect:-
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cpe:2.3:a:netapp:solidfire_&_hci_management_node:-
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cpe:2.3:a:systemd_project:systemd:242
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cpe:2.3:h:netapp:cn1610:-
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cpe:2.3:o:netapp:cn1610_firmware:-