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              "value": "An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service (DoS).\u003cbr\u003e\u003cbr\u003eIf an attacker sends a specific MPLS packet, which upon processing, causes an internal loop, that leads to a PFE crash and restart. Continued receipt of these packets leads to a sustained Denial of Service (DoS) condition.\u003cbr\u003e \u003cbr\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eCircuit cross-connect (CCC) needs to be configured on the device for it to be affected by this issue.\u003cbr\u003e\u003c/span\u003e\u003cbr\u003eThis issue only affects MX Series with MPC10, MPC11, LC9600, and MX304.\u003cbr\u003e\u003cbr\u003eThis issue affects:\u003cbr\u003eJuniper Networks Junos OS\u003cbr\u003e21.4 versions from 21.4R3 earlier than 21.4R3-S5;\u003cbr\u003e22.2 versions from 22.2R2 earlier than 22.2R3-S2;\u003cbr\u003e22.3 versions from 22.3R1 earlier than 22.3R2-S2;\u003cbr\u003e22.3 versions from 22.3R3 earlier than\u0026nbsp;\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e22.3R3-S1\u003c/span\u003e\u003cbr\u003e22.4 versions from 22.4R1 earlier than 22.4R2-S2, 22.4R3;\u003cbr\u003e23.2 versions earlier than 23.2R1-S1, 23.2R2.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e"
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