This issue is not applicable to NFX NextGen Software. On NFX Series devices the use of Hard-coded Credentials in Juniper Networks Junos OS allows an attacker to take over any instance of an NFX deployment.

This issue is only exploitable through administrative interfaces.

This issue affects:

• Juniper Networks Junos OS versions prior to 19.1R1 on NFX Series.

No other platforms besides NFX Series devices are affected.

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

This issue was found during internal product security testing or research.

This issue has been assigned  CVE-2021-0248 .

The following software releases have been updated to resolve this specific issue: 19.1R1, and all subsequent releases.

This issue is being tracked as  1441248

Software releases or updates are available for download at https://support.juniper.net/support/downloads/

There are no known workarounds for this issue.

To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to the device's administrative interfaces to only trusted administrative networks, hosts and users.

2021-04-14: Initial Publication.

• KB16613: Overview of the Juniper Networks SIRT Quarterly Security Bulletin Publication Process [juniper.net]
• KB16765: In which releases are vulnerabilities fixed? [juniper.net]
• KB16446: Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories [juniper.net]
• Report a Security Vulnerability - How to Contact the Juniper Networks Security Incident Response Team
• CVE-2021-0248 at cve.mitre.org