PT-2021-5089 · Juniper Networks · Junos

Published

2021-10-13

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Updated

2021-10-26

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CVE-2021-31368

CVSS v2.0

7.8

High

VectorAV:N/AC:L/Au:N/C:N/I:N/A:C
Name of the Vulnerable Software and Affected Versions Juniper Networks JUNOS OS versions prior to 18.1R3-S13 Juniper Networks JUNOS OS 18.2 versions prior to 18.2R3-S8 Juniper Networks JUNOS OS 18.3 versions prior to 18.3R3-S5 Juniper Networks JUNOS OS 18.4 versions prior to 18.4R2-S8, 18.4R3-S9 Juniper Networks JUNOS OS 19.1 versions prior to 19.1R3-S5 Juniper Networks JUNOS OS 19.2 versions prior to 19.2R1-S7, 19.2R3-S3 Juniper Networks JUNOS OS 19.3 versions prior to 19.3R2-S6, 19.3R3-S2 Juniper Networks JUNOS OS 19.4 versions prior to 19.4R1-S4, 19.4R3-S3 Juniper Networks JUNOS OS 20.1 versions prior to 20.1R2-S2, 20.1R3 Juniper Networks JUNOS OS 20.2 versions prior to 20.2R3 Juniper Networks JUNOS OS 20.3 versions prior to 20.3R2-S1, 20.3R3 Juniper Networks JUNOS OS 20.4 versions prior to 20.4R2
Description An Uncontrolled Resource Consumption issue in the kernel of Juniper Networks JUNOS OS allows an unauthenticated network-based attacker to cause 100% CPU load and the device to become unresponsive by sending a flood of traffic to the out-of-band management ethernet port. This can create a sustained Denial of Service (DoS) condition. The system will recover once the flood subsides. Indications of the issue include high CPU usage by kernel and netisr processes.
Recommendations For Juniper Networks JUNOS OS versions prior to 18.1R3-S13, update to 18.1R3-S13 or later. For Juniper Networks JUNOS OS 18.2 versions prior to 18.2R3-S8, update to 18.2R3-S8 or later. For Juniper Networks JUNOS OS 18.3 versions prior to 18.3R3-S5, update to 18.3R3-S5 or later. For Juniper Networks JUNOS OS 18.4 versions prior to 18.4R2-S8, 18.4R3-S9, update to 18.4R2-S8, 18.4R3-S9 or later. For Juniper Networks JUNOS OS 19.1 versions prior to 19.1R3-S5, update to 19.1R3-S5 or later. For Juniper Networks JUNOS OS 19.2 versions prior to 19.2R1-S7, 19.2R3-S3, update to 19.2R1-S7, 19.2R3-S3 or later. For Juniper Networks JUNOS OS 19.3 versions prior to 19.3R2-S6, 19.3R3-S2, update to 19.3R2-S6, 19.3R3-S2 or later. For Juniper Networks JUNOS OS 19.4 versions prior to 19.4R1-S4, 19.4R3-S3, update to 19.4R1-S4, 19.4R3-S3 or later. For Juniper Networks JUNOS OS 20.1 versions prior to 20.1R2-S2, 20.1R3, update to 20.1R2-S2, 20.1R3 or later. For Juniper Networks JUNOS OS 20.2 versions prior to 20.2R3, update to 20.2R3 or later. For Juniper Networks JUNOS OS 20.3 versions prior to 20.3R2-S1, 20.3R3, update to 20.3R2-S1, 20.3R3 or later. For Juniper Networks JUNOS OS 20.4 versions prior to 20.4R2, update to 20.4R2 or later.

Fix

DoS

Resource Exhaustion

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Weakness Enumeration

CWE-400

Related Identifiers

BDU:2021-05871
CVE-2021-31368

Affected Products

Junos