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2021-04 Security Bulletin: NFX Series: Hard-coded credentials allows an attacker to take control of any instance through administrative interfaces. (CVE-2021-0248)

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Article ID: JSA11141 SECURITY_ADVISORIES Last Updated: 14 Apr 2021Version: 1.0
Product Affected:
This issue affects Junos OS. Affected platforms: NFX Series.
Problem:

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.

Solution:

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

Workaround:

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.

Implementation:
Software releases or updates are available for download at https://support.juniper.net/support/downloads/
Modification History:
2021-04-14: Initial Publication.
CVSS Score:
10.0 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
Severity Level:
Critical
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

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