An unexpected status return value weakness in the Next-Generation Multicast VPN (NG-mVPN) service of Juniper Networks Junos OS allows attacker to cause a Denial of Service (DoS) condition and core the routing protocol daemon (rpd) process when a specific malformed IPv4 packet is received by the device running BGP. This malformed packet can be crafted and sent to a victim device including when forwarded directly through a device receiving such a malformed packet, but not if the malformed packet is first de-encapsulated from an encapsulated format by a receiving device. Continued receipt of the malformed packet will result in a sustained Denial of Service condition. This issue affects: Juniper Networks Junos OS 15.1 versions prior to 15.1F6-S12, 15.1R7-S2; 15.1X49 versions prior to 15.1X49-D
The following software releases have been updated to resolve this specific issue: 15.1F6-S12, 15.1R7-S2, 15.1X49-D150, 15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590, 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2, 16.2R2-S7, 17.1R2-S9, 17.1R3, 17.2R1-S7, 17.2R2-S6, 17.2R3, 17.3R2-S4, 17.3R3, 17.4R1, and all subsequent releases.
Discontinue use of BGP services if not needed. Otherwise, there are no viable workarounds for this issue.
| Product | Vulnerable range | Fixed version | Advisory |
|---|---|---|---|
| Juniper Networks Junos OS | >=15.1<15.1F6-S12, 15.1R7-S2 | 15.1F6-S12, 15.1R7-S2 | advisory ↗ |
| Juniper Networks Junos OS | >=15.1X49<15.1X49-D150 | 15.1X49-D150 | advisory ↗ |
| Juniper Networks Junos OS | >=15.1X53<15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590 | 15.1X53-D68, 15.1X53-D235, 15.1X53-D495, 15.1X53-D590 | advisory ↗ |
| Juniper Networks Junos OS | >=16.1<16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2 | 16.1R3-S10, 16.1R4-S12, 16.1R6-S6, 16.1R7-S2 | advisory ↗ |
| Juniper Networks Junos OS | >=16.2<16.2R2-S7 | 16.2R2-S7 | advisory ↗ |
| Juniper Networks Junos OS | >=17.1<17.1R2-S9, 17.1R3 | 17.1R2-S9, 17.1R3 | advisory ↗ |
| Juniper Networks Junos OS | >=17.2<17.2R1-S7, 17.2R2-S6, 17.2R3 | 17.2R1-S7, 17.2R2-S6, 17.2R3 | advisory ↗ |
| Juniper Networks Junos OS | >=17.3<17.3R2-S4, 17.3R3 | 17.3R2-S4, 17.3R3 | advisory ↗ |