title: NFX Series: Insecure sshd configuration in Juniper Device Manager (JDM) and host OS
description: An insecure SSHD configuration in Juniper Device Manager (JDM) and host OS on Juniper NFX Series devices may allow remote unauthenticated access if any of the passwords on the system are empty. The affected SSHD configuration has the PermitEmptyPasswords option set to "yes". Affected releases are Juniper Networks Junos OS: 18.1 versions prior to 18.1R4 on NFX Series.
problem types: Insecure default configuration
affected:
{
platforms: NFX Series
product: Junos OS
vendor: Juniper Networks
versions:
lessThan: 18.1R4, status: affected, version: 18.1, versionType: custom
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.0
]
exploits: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
solutions: PermitEmptyPasswords option has been set to no by default in the fixed versions of Junos OS.
The following software releases have been updated to resolve this specific issue: 18.1R4, 18.2R1 and all subsequent releases.
workarounds: Ensure all the accounts on the JDM and host OS are configured with a password.