CVE-2020-1666

Junos OS Evolved: 'console log-out-on-disconnect' fails to terminate session on console cable disconnection

Published Oct 16, 2020 CVSS 3.1 · 6.6 Medium EPSS < 1% KEV · Not listed
Description
The system console configuration option 'log-out-on-disconnect' In Juniper Networks Junos OS Evolved fails to log out an active CLI session when the console cable is disconnected. This could allow a malicious attacker with physical access to the console the ability to resume a previous interactive session and possibly gain administrative privileges. This issue affects all Juniper Networks Junos OS Evolved versions after 18.4R1-EVO, prior to 20.2R1-EVO.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.2R1-EVO and all subsequent releases.


Vendor Workaround

Limit access to the physical console to only trusted system administrators.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-12528 The system console configuration option 'log-out-on-disconnect' In Juniper Networks Junos OS Evolved fails to log out an active CLI session when the console cable is disconnected. This could allow a malicious attacker with physical access to the console the ability to resume a previous interactive session and possibly gain administrative privileges. This issue affects all Juniper Networks Junos OS Evolved versions after 18.4R1-EVO, prior to 20.2R1-EVO.
References
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
Sep 16, 2024, 11:41 PM
Reserved
Nov 4, 2019, 12:00 AM
Status
Modified
Published
Oct 16, 2020, 9:15 PM
Modified
Jun 17, 2026, 3:02 AM