CVE-2018-20839

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Summary

CVECVE-2018-20839
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-05-17 04:29:00 UTC
Updated2023-11-07 02:56:00 UTC
Descriptionsystemd 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.

Risk And Classification

Problem Types: CWE-200

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Freedesktop Systemd 242 - All All
Application Freedesktop Systemd 242 - All All
Hardware Netapp Cn1610 - All All All
Operating System Netapp Cn1610 Firmware - All All All
Application Netapp Snapprotect - All All All
Application Netapp Solidfire Hci Management Node - All All All
Application Systemd Project Systemd 242 - All All

References

ReferenceSourceLinkTags
CVE-2018-20839 Systemd Vulnerability in NetApp Products | NetApp Product Security CONFIRM security.netapp.com
Pony Mail! MLIST lists.apache.org
Merge pull request #12378 from rbalint/vt-kbd-reset-check · systemd/systemd@9725f1a · GitHub MISC github.com Patch, Third Party Advisory
VT kbd reset check by rbalint · Pull Request #12378 · systemd/systemd · GitHub MISC github.com Third Party Advisory
Bug #1803993 “Password appears on the VT1 screen” : Bugs : systemd package : Ubuntu MISC bugs.launchpad.net Issue Tracking, Third Party Advisory
Malformed Request BID www.securityfocus.com
[mina-dev] 20210225 [jira] [Created] (FTPSERVER-500) Security vulnerability in common/lib/log4j-1.2.17.jar lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 904845 Common Base Linux Mariner (CBL-Mariner) Security Update for systemd (12448)
  • 904884 Common Base Linux Mariner (CBL-Mariner) Security Update for systemd-bootstrap (12449)
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