NFX Series devices using Juniper Networks Junos OS are susceptible to a local code execution vulnerability thereby allowing an attacker to elevate their privileges via the Junos Device Management Daemon (JDMD) process. This issue affects Juniper Networks Junos OS on NFX Series: 18.1 version 18.1R1 and later versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R1-S3, 19.1R2; 19.2 versions prior to 19.2R1-S5, 19.2R2. This issue does not affect: Juniper Networks Junos OS versions prior to 18.1R1. This issue does not affect the JDMD as used by Junos Node Slicing such as External Servers use in conjunction with Junos Node Slicing and In-Chassis Junos Node Slicing on MX480, MX960, MX2008, MX2010, MX2020.
The following software releases have been updated to resolve this specific issue: Junos OS: 18.2R3-S5, 18.3R2-S4, 18.3R3-S3, 18.4R2-S5, 18.4R3-S4, 19.1R1-S3, 19.1R2, 19.2R1-S5, 19.2R2, 19.3R1 and all subsequent releases.
There are no viable workarounds for these issue. To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=18.1R1<18.1* | 18.1* | advisory ↗ |
| Juniper Networks Junos OS | >=18.2<18.2R3-S5 | 18.2R3-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=18.3<18.3R2-S4, 18.3R3-S3 | 18.3R2-S4, 18.3R3-S3 | advisory ↗ |
| Juniper Networks Junos OS | >=18.4<18.4R2-S5, 18.4R3-S4 | 18.4R2-S5, 18.4R3-S4 | advisory ↗ |
| Juniper Networks Junos OS | >=19.1<19.1R1-S3, 19.1R2 | 19.1R1-S3, 19.1R2 | advisory ↗ |
| Juniper Networks Junos OS | >=19.2<19.2R1-S5, 19.2R2 | 19.2R1-S5, 19.2R2 | advisory ↗ |