On Juniper Networks MX series, receipt of a stream of specific Layer 2 frames may cause a memory leak resulting in the packet forwarding engine (PFE) on the line card to crash and restart, causing traffic interruption. By continuously sending this stream of specific layer 2 frame, an attacker connected to the same broadcast domain can repeatedly crash the PFE, causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS on MX Series: 17.2 versions prior to 17.2R3-S4; 17.2X75 versions prior to 17.2X75-D105.19; 17.3 versions prior to 17.3R3-S7; 17.4 versions prior to 17.4R1-S3, 17.4R2; 18.1 versions prior to 18.1R2. This issue does not affect Juniper Networks Junos OS releases prior to 17.2R1.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Junos | Juniper | 17.2 (including) | 17.2 (including) |
| Junos | Juniper | 17.2-r1 (including) | 17.2-r1 (including) |
| Junos | Juniper | 17.2-r1-s1 (including) | 17.2-r1-s1 (including) |
| Junos | Juniper | 17.2-r1-s2 (including) | 17.2-r1-s2 (including) |
| Junos | Juniper | 17.2-r1-s3 (including) | 17.2-r1-s3 (including) |
| Junos | Juniper | 17.2-r1-s4 (including) | 17.2-r1-s4 (including) |
| Junos | Juniper | 17.2-r1-s5 (including) | 17.2-r1-s5 (including) |
| Junos | Juniper | 17.2-r1-s7 (including) | 17.2-r1-s7 (including) |
| Junos | Juniper | 17.2-r1-s8 (including) | 17.2-r1-s8 (including) |
| Junos | Juniper | 17.2-r2 (including) | 17.2-r2 (including) |
| Junos | Juniper | 17.2-r2-s11 (including) | 17.2-r2-s11 (including) |
| Junos | Juniper | 17.2-r2-s6 (including) | 17.2-r2-s6 (including) |
| Junos | Juniper | 17.2-r2-s7 (including) | 17.2-r2-s7 (including) |
| Junos | Juniper | 17.2-r3-s1 (including) | 17.2-r3-s1 (including) |
| Junos | Juniper | 17.2-r3-s2 (including) | 17.2-r3-s2 (including) |
| Junos | Juniper | 17.2-r3-s3 (including) | 17.2-r3-s3 (including) |
| Junos | Juniper | 17.2x75 (including) | 17.2x75 (including) |
| Junos | Juniper | 17.2x75-d102 (including) | 17.2x75-d102 (including) |
| Junos | Juniper | 17.2x75-d50 (including) | 17.2x75-d50 (including) |
| Junos | Juniper | 17.2x75-d70 (including) | 17.2x75-d70 (including) |
| Junos | Juniper | 17.2x75-d92 (including) | 17.2x75-d92 (including) |
| Junos | Juniper | 17.3 (including) | 17.3 (including) |
| Junos | Juniper | 17.3-r1-s1 (including) | 17.3-r1-s1 (including) |
| Junos | Juniper | 17.3-r2 (including) | 17.3-r2 (including) |
| Junos | Juniper | 17.3-r2-s1 (including) | 17.3-r2-s1 (including) |
| Junos | Juniper | 17.3-r2-s2 (including) | 17.3-r2-s2 (including) |
| Junos | Juniper | 17.3-r2-s3 (including) | 17.3-r2-s3 (including) |
| Junos | Juniper | 17.3-r2-s4 (including) | 17.3-r2-s4 (including) |
| Junos | Juniper | 17.3-r3 (including) | 17.3-r3 (including) |
| Junos | Juniper | 17.3-r3-s1 (including) | 17.3-r3-s1 (including) |
| Junos | Juniper | 17.3-r3-s2 (including) | 17.3-r3-s2 (including) |
| Junos | Juniper | 17.3-r3-s3 (including) | 17.3-r3-s3 (including) |
| Junos | Juniper | 17.3-r3-s4 (including) | 17.3-r3-s4 (including) |
| Junos | Juniper | 17.4 (including) | 17.4 (including) |
| Junos | Juniper | 17.4-r1 (including) | 17.4-r1 (including) |
| Junos | Juniper | 17.4-r1-s1 (including) | 17.4-r1-s1 (including) |
| Junos | Juniper | 17.4-r1-s2 (including) | 17.4-r1-s2 (including) |
| Junos | Juniper | 18.1 (including) | 18.1 (including) |
| Junos | Juniper | 18.1-r1 (including) | 18.1-r1 (including) |