An Improper Isolation or Compartmentalization vulnerability in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS on QFX5000 Series and EX Series allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).
If a specific malformed LACP packet is received by a QFX5000 Series, or an EX4400, EX4100 or EX4650 Series device, an LACP flap will occur resulting in traffic loss. This issue affects Junos OS on QFX5000 Series, and on EX4400, EX4100 or EX4650 Series:
20.4R3-S4
before 20.4R3-S8,
21.2R3-S2
before 21.2R3-S6,
21.4R2
before 21.4R3-S4,
22.1R2
before 22.1R3-S3,
The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.