PT-2021-19264 · Juniper Networks · Junos

Published

2021-10-19

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Updated

2021-10-26

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CVE-2021-31365

CVSS v3.1

6.5

Medium

VectorAV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS EX4300 Series 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 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 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.
Description 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 to trigger an Aggregated Ethernet (AE) interface to go down, 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.
Recommendations For Juniper Networks Junos OS EX4300 Series versions prior to 15.1R7-S7, update to version 15.1R7-S7 or later. For Juniper Networks Junos OS EX4300 Series 16.1 versions prior to 16.1R7-S8, update to version 16.1R7-S8 or later. For Juniper Networks Junos OS EX4300 Series 17.1 versions prior to 17.1R2-S12, update to version 17.1R2-S12 or later. For Juniper Networks Junos OS EX4300 Series 17.2 versions prior to 17.2R3-S4, update to version 17.2R3-S4 or later. For Juniper Networks Junos OS EX4300 Series 17.3 versions prior to 17.3R3-S8, update to version 17.3R3-S8 or later. For Juniper Networks Junos OS EX4300 Series 17.4 versions prior to 17.4R2-S10, 17.4R3-S2, update to version 17.4R2-S10 or 17.4R3-S2 or later. For Juniper Networks Junos OS EX4300 Series 18.1 versions prior to 18.1R3-S10, update to version 18.1R3-S10 or later. For Juniper Networks Junos OS EX4300 Series 18.2 versions prior to 18.2R2-S7, 18.2R3-S3, update to version 18.2R2-S7 or 18.2R3-S3 or later. For Juniper Networks Junos OS EX4300 Series 18.3 versions prior to 18.3R2-S4, 18.3R3-S2, update to version 18.3R2-S4 or 18.3R3-S2 or later. For Juniper Networks Junos OS EX4300 Series 18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S1, update to version 18.4R1-S7 or 18.4R2-S4 or 18.4R3-S1 or later. For Juniper Networks Junos OS EX4300 Series 19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3, update to version 19.1R1-S5 or 19.1R2-S1 or 19.1R3 or later. For Juniper Networks Junos OS EX4300 Series 19.2 versions prior to 19.2R1-S5, 19.2R2, update to version 19.2R1-S5 or 19.2R2 or later. For Juniper Networks Junos OS EX4300 Series 19.3 versions prior to 19.3R2-S2, 19.3R3, update to version 19.3R2-S2 or 19.3R3 or later. For Juniper Networks Junos OS EX4300 Series 19.4 versions prior to 19.4R1-S2, 19.4R2, update to version 19.4R1-S2 or 19.4R2 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series versions prior to 18.1R3-S12, update to version 18.1R3-S12 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 18.2 versions prior to 18.2R3-S7, update to version 18.2R3-S7 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 18.3 versions prior to 18.3R3-S4, update to version 18.3R3-S4 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 18.4 versions prior to 18.4R2-S9, 18.4R3-S7, update to version 18.4R2-S9 or 18.4R3-S7 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 19.1 versions prior to 19.1R2-S3, 19.1R3-S4, update to version 19.1R2-S3 or 19.1R3-S4 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 19.2 versions prior to 19.2R3-S1, update to version 19.2R3-S1 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 19.3 versions prior to 19.3R3-S1, update to version 19.3R3-S1 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 19.4 versions prior to 19.4R3-S1, update to version 19.4R3-S1 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 20.1 versions prior to 20.1R3, update to version 20.1R3 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 20.2 versions prior to 20.2R3, update to version 20.2R3 or later. For Juniper Networks Junos OS EX3400 and EX4300-MP Series 20.3 versions prior to 20.3R2, update to version 20.3R2 or later. For Juniper Networks Junos OS EX2300 Series versions prior to 18.3R3-S5, update to version 18.3R3-S5 or later. For Juniper Networks Junos OS EX2300 Series 18.4 versions prior to 18.4R2-S9, 18.4R3-S9, update to version 18.4R2-S9 or 18.4R3-S9 or later. For Juniper Networks Junos OS EX2300 Series 19.1 versions prior to 19.1R2-S3, 19.1R3-S6, update to version 19.1R2-S3 or 19.1R3-S6 or later. For Juniper Networks Junos OS EX2300 Series 19.2 versions prior to 19.2R1-S7, 19.2R3-S3, update to version 19.2R1-S7 or 19.2R3-S3 or later. For Juniper Networks Junos OS EX2300 Series 19.3 versions prior to 19.3R2-S7, 19.3R3-S3, update to version 19.3R2-S7 or 19.3R3-S3 or later. For Juniper Networks Junos OS EX2300 Series 19.4 versions prior to 19.4R3-S5, update to version 19.4R3-S5 or later. For Juniper Networks Junos OS EX2300 Series 20.1 versions prior to 20.1R2-S2, 20.1R3-S1, update to version 20.1R2-S2 or 20.1R3-S1 or later. For Juniper Networks Junos OS EX2300 Series 20.2 versions prior to 20.2R3-S2, update to version 20.2R3-S2 or later. For Juniper Networks Junos OS EX2300 Series 20.3 versions prior to 20.3R3-S1, update to version 20.3R3-S1 or later. For Juniper Networks Junos OS EX2300 Series 20.4 versions prior to 20.4R2-S1, 20.4R3, update to version 20.4R2-S1 or 20.4R3 or later. For Juniper Networks Junos OS EX2300 Series 21.1 versions prior to 21.1R2, update to version 21.1R2 or later.

Fix

DoS

Resource Exhaustion

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Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-31365

Affected Products

Junos