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GoogleOSV:CVE-2018-20839HistoryMay 17, 2019 - 4:29 a.m.
CVE-2018-20839
2019-05-1704:29:00
Google
osv.dev
2
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.
References
www.securityfocus.com/bid/108389
bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993
github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f
github.com/systemd/systemd/pull/12378
lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
security.netapp.com/advisory/ntap-20190530-0002/
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