A command injection vulnerability in install package validation subsystem of Juniper Networks Junos OS that may allow a locally authenticated attacker with privileges to execute commands with root privilege. To validate a package in Junos before installation, an administrator executes the command 'request system software add validate-on-host' via the CLI. An attacker with access to this CLI command may be able to exploit this vulnerability. This issue affects Juniper Networks Junos OS: all versions prior to 17.3R3-S10; 17.4 versions prior to 17.4R2-S12, 17.4R3-S3; 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R2-S8, 18.2R3-S6; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S6; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S3; 19.
The following software releases have been updated to resolve this specific issue: Junos OS: 17.3R3-S10, 17.4R2-S12, 17.4R3-S3, 18.1R3-S11, 18.2R2-S8, 18.2R3-S6, 18.2X75-D34, 18.3R3-S4, 18.4R1-S8, 18.4R2-S7, 18.4R3-S6, 19.1R1-S6, 19.1R2-S2, 19.1R3-S3, 19.2R3-S1, 19.3R2-S5, 19.3R3-S1, 19.4R2-S2, 19.4R3-S1, 20.1R2, 20.2R1-S2, 20.2R2, 20.3R1-S1, 20.3R2, 20.4R1, and all subsequent releases.
Use access lists or firewall filters to limit CLI access to the device only from trusted, administrative networks or hosts. Limit access to the Junos OS CLI to only trusted system administrators. Restrict access to the 'request system software add validate-on-host' command.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=unspecified<17.3R3-S10 | 17.3R3-S10 | advisory ↗ |
| Juniper Networks Junos OS | >=17.4<17.4R2-S12, 17.4R3-S3 | 17.4R2-S12, 17.4R3-S3 | advisory ↗ |
| Juniper Networks Junos OS | >=18.1<18.1R3-S11 | 18.1R3-S11 | advisory ↗ |
| Juniper Networks Junos OS | >=18.2<18.2R2-S8, 18.2R3-S6 | 18.2R2-S8, 18.2R3-S6 | advisory ↗ |
| Juniper Networks Junos OS | >=18.3<18.3R3-S4 | 18.3R3-S4 | advisory ↗ |
| Juniper Networks Junos OS | >=18.4<18.4R1-S8, 18.4R2-S7, 18.4R3-S6 | 18.4R1-S8, 18.4R2-S7, 18.4R3-S6 | advisory ↗ |
| Juniper Networks Junos OS | >=19.1<19.1R1-S6, 19.1R2-S2, 19.1R3-S3 | 19.1R1-S6, 19.1R2-S2, 19.1R3-S3 | advisory ↗ |
| Juniper Networks Junos OS | >=19.2<19.2R3-S1 | 19.2R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=19.3<19.3R2-S5, 19.3R3-S1 | 19.3R2-S5, 19.3R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=19.4<19.4R2-S2, 19.4R3-S1 | 19.4R2-S2, 19.4R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=20.1<20.1R2 | 20.1R2 | advisory ↗ |
| Juniper Networks Junos OS | >=20.2<20.2R1-S2, 20.2R2 | 20.2R1-S2, 20.2R2 | advisory ↗ |
| Juniper Networks Junos OS | >=20.3<20.3R1-S1, 20.3R2 | 20.3R1-S1, 20.3R2 | advisory ↗ |