An Uncontrolled Resource Consumption vulnerability in Juniper Networks Junos OS on EX2300, EX3400 and EX4300 Series platforms allows an adjacent attacker sending a stream of layer 2 frames will trigger an Aggregated Ethernet (AE) interface to go down and thereby causing a Denial of Service (DoS). By continuously sending a stream of specific layer 2 frames an attacker will sustain the Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS EX4300 Series All versions prior to 15.1R7-S7.

16.1 versions prior to 16.1R7-S8.

17.1 versions prior to 17.1R2-S12.

17.2 versions prior to 17.2R3-S4.

17.3 versions prior to 17.3R3-S8.

17.4 versions prior to 17.4R2-S10, 17.4R3-S2.

18.1 versions prior to 18.1R3-S10.

18.2 versions prior to 18.2R2-S7, 18.2R3-S3.

18.3 versions prior to 18.3R2-S4, 18.3R3-S2.

18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S1.

19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3.

19.2 versions prior to 19.2R1-S5, 19.2R2.

19.3 versions prior to 19.3R2-S2, 19.3R3.

19.4 versions prior to 19.4R1-S2, 19.4R2. Juniper Networks Junos OS EX3400 and EX4300-MP Series All versions prior to 18.1R3-S12.

18.2 versions prior to 18.2R3-S7.

18.3 versions prior to 18.3R3-S4.

18.4 versions prior to 18.4R2-S9, 18.4R3-S7.

19.1 versions prior to 19.1R2-S3, 19.1R3-S4.

19.2 versions prior to 19.2R3-S1.

19.3 versions prior to 19.3R3-S1.

19.4 versions prior to 19.4R3-S1.

20.1 versions prior to 20.1R3.

20.2 versions prior to 20.2R3.

20.3 versions prior to 20.3R2. Juniper Networks Junos OS EX2300 Series All versions prior to 18.3R3-S5.

18.4 versions prior to 18.4R2-S9, 18.4R3-S9.

19.1 versions prior to 19.1R2-S3, 19.1R3-S6.

19.2 versions prior to 19.2R1-S7, 19.2R3-S3.

19.3 versions prior to 19.3R2-S7, 19.3R3-S3.

19.4 versions prior to 19.4R3-S5.

20.1 versions prior to 20.1R2-S2, 20.1R3-S1.

20.2 versions prior to 20.2R3-S2.

20.3 versions prior to 20.3R3-S1.

20.4 versions prior to 20.4R2-S1, 20.4R3.

21.1 versions prior to 21.1R2.