CVE Vulnerability

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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/systemd/systemd/pull/12378 Third Party Advisory
https://github.com/systemd/systemd/commit/9725f1a10f80f5e0ae7d9b60547458622aeb322f Patch Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1803993 Issue Tracking Third Party Advisory
http://www.securityfocus.com/bid/108389 Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20190530-0002/ Patch Third Party Advisory
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:systemd_project:systemd:242:-:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire_&_hci_management_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:*
Information

Published : 2019-05-17 04:29

Updated : 2022-02-20 06:10

NVD link : CVE-2018-20839

Mitre link : CVE-2018-20839

Products Affected

Cn1610 Firmware

Netapp

CWE
CWE-200