An Out-of-bounds Read vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX Series allows a local, authenticated attacker with low privileges, to cause a Denial of Service (DoS). If a low privileged user executes a specific CLI command, flowd which is responsible for traffic forwarding in SRX crashes and generates a core dump. This will cause temporary traffic interruption until the flowd process is restarted automatically. Continued execution of this command will lead to a sustained DoS. This issue affects Juniper Networks Junos OS on SRX Series: All versions prior to 20.2R3-S7; 20.3 version 20.3R1 and later versions; 20.4 versions prior to 20.4R3-S6; 21.1 versions prior to 21.1R3-S5; 21.2 versions prior to 21.2R3-S4; 21.3 versions prior to 21.3R3-S4; 2
The following software releases have been updated to resolve this specific issue: Junos OS 20.2R3-S7, 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S4, 21.4R3-S3, 22.1R3-S1, 22.2R3, 22.3R2, 22.4R1-S1, 22.4R2, 23.1R1, and all subsequent releases.
There are no available workarounds for this issue.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=unspecified<20.2R3-S7 | 20.2R3-S7 | advisory ↗ |
| Juniper Networks Junos OS | >=20.3<20.3* | 20.3* | advisory ↗ |
| Juniper Networks Junos OS | >=20.4<20.4R3-S6 | 20.4R3-S6 | advisory ↗ |
| Juniper Networks Junos OS | >=21.1<21.1R3-S5 | 21.1R3-S5 | advisory ↗ |
| Juniper Networks Junos OS | >=21.2<21.2R3-S4 | 21.2R3-S4 | advisory ↗ |
| Juniper Networks Junos OS | >=21.3<21.3R3-S4 | 21.3R3-S4 | advisory ↗ |
| Juniper Networks Junos OS | >=21.4<21.4R3-S3 | 21.4R3-S3 | advisory ↗ |
| Juniper Networks Junos OS | >=22.1<22.1R3-S1 | 22.1R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=22.2<22.2R3 | 22.2R3 | advisory ↗ |
| Juniper Networks Junos OS | >=22.3<22.3R2 | 22.3R2 | advisory ↗ |
| Juniper Networks Junos OS | >=22.4<22.4R1-S1, 22.4R2 | 22.4R1-S1, 22.4R2 | advisory ↗ |