A Stack-based Buffer Overflow vulnerability in the CLI command of Juniper Networks Junos OS allows a low privileged attacker to execute a specific CLI commands leading to Denial of Service. Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS * All versions prior to 19.1R3-S10; * 19.2 versions prior to 19.2R3-S7; * 19.3 versions prior to 19.3R3-S8; * 19.4 versions prior to 19.4R3-S12; * 20.2 versions prior to 20.2R3-S8; * 20.4 versions prior to 20.4R3-S8; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S3; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R3-
The following software releases have been updated to resolve this specific issue: Junos OS 19.1R3-S10, 19.2R3-S7, 19.3R3-S8, 19.4R3-S12, 20.2R3-S8, 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S3, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R1, 23.2R2, 23.3R1, and all subsequent releases.
To reduce the risk of malicious exploitation use access lists or firewall filters to limit access to the CLI only from trusted hosts and administrators. There are no known workarounds for this issue.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | <19.1R3-S10 | 19.1R3-S10 | advisory ↗ |
| Juniper Networks Junos OS | >=19.2<19.2R3-S7 | 19.2R3-S7 | advisory ↗ |
| Juniper Networks Junos OS | >=19.3<19.3R3-S8 | 19.3R3-S8 | advisory ↗ |
| Juniper Networks Junos OS | >=19.4<19.4R3-S12 | 19.4R3-S12 | advisory ↗ |
| Juniper Networks Junos OS | >=20.2<20.2R3-S8 | 20.2R3-S8 | advisory ↗ |
| Juniper Networks Junos OS | >=20.4<20.4R3-S8 | 20.4R3-S8 | advisory ↗ |
| Juniper Networks Junos OS | >=21.2<21.2R3-S6 | 21.2R3-S6 | advisory ↗ |
| Juniper Networks Junos OS | >=21.3<21.3R3-S5 | 21.3R3-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=21.4<21.4R3-S5 | 21.4R3-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=22.1<22.1R3-S3 | 22.1R3-S3 | advisory ↗ |
| Juniper Networks Junos OS | >=22.2<22.2R3-S2 | 22.2R3-S2 | advisory ↗ |
| Juniper Networks Junos OS | >=22.3<22.3R3-S1 | 22.3R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=22.4<22.4R2-S1 | 22.4R2-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=23.2<23.2R2 | 23.2R2 | advisory ↗ |