Juniper Networks Junos OS MX Series Packet Forwarding Engine Denial-of-Service Vulnerability

A denial-of-service vulnerability has been identified in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series routers. This vulnerability allows an unauthenticated, network-based attacker to disrupt traffic forwarding by causing the PFE to hang. The issue arises when the device processes a high rate of specific GRE traffic, leading to a stoppage in traffic forwarding. Affected devices will log an ASIC Error indicating the problem.

Impact

Exploitation of this vulnerability causes the Packet Forwarding Engine to hang, disrupting traffic forwarding and causing a denial-of-service condition on the affected device.