A NULL Pointer Dereference vulnerability in Juniper Networks Junos OS allows an attacker to send a specific packet causing the packet forwarding engine (PFE) to crash and restart, resulting in a Denial of Service (DoS). By continuously sending these specific packets, an attacker can repeatedly disable the PFE causing a sustained Denial of Service (DoS). This issue only affects Juniper Networks NFX Series, SRX Series platforms when SSL Proxy is configured. This issue affects Juniper Networks Junos OS on NFX Series and SRX Series: 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R3-S1; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3; 19.2 versions prior to 19.2R1-S2, 19.2R2; 19.3 versions prior to 19.3R2. This issue does not affect Juniper Networks Junos OS versions on NFX Se
The following software releases have been updated to resolve this specific issue: Junos OS: 18.3R3-S4, 18.4R3-S1, 19.1R1-S6, 19.1R2-S2, 19.1R3, 19.2R1-S2, 19.2R2, 19.3R2, 19.4R1 and all subsequent releases.
There are no viable workarounds for this issue.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=18.3R1<18.3* | 18.3* | advisory ↗ |
| Juniper Networks Junos OS | >=18.4<18.4R3-S1 | 18.4R3-S1 | advisory ↗ |
| Juniper Networks Junos OS | >=19.1<19.1R1-S6, 19.1R2-S2, 19.1R3 | 19.1R1-S6, 19.1R2-S2, 19.1R3 | advisory ↗ |
| Juniper Networks Junos OS | >=19.2<19.2R1-S2, 19.2R2 | 19.2R1-S2, 19.2R2 | advisory ↗ |
| Juniper Networks Junos OS | >=19.3<19.3R2 | 19.3R2 | advisory ↗ |