CVEvulnerability

CVE-2020-1670

6.5 MEDIUM Published 2020-10-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-10-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
3.3 LOW — AV:A/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-400

Description

On Juniper Networks EX4300 Series, receipt of a stream of specific IPv4 packets can cause Routing Engine (RE) high CPU load, which could lead to network protocol operation issue and traffic interruption. This specific packets can originate only from within the broadcast domain where the device is connected. This issue occurs when the packets enter to the IRB interface. Only IPv4 packets can trigger this issue. IPv6 packets cannot trigger this issue. This issue affects Juniper Networks Junos OS on EX4300 series: 17.3 versions prior to 17.3R3-S9; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R3-S4; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R2-S4, 18.4R3-S2; 19.1 versions prior to 19.1R2-S2, 19.1R3-S1; 19.2 versions prior to 19.2R1-S5, 19.2R2-S1, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2; 20.1 versions prior to 20.1R1-S3, 20.1R2.

Affected configurations

• juniper junos 17.3 • juniper junos 17.4 • juniper junos 18.1 • juniper junos 18.2 • juniper junos 18.3 • juniper junos 18.4 • juniper junos 19.1 • juniper junos 19.2 • juniper junos 19.3 • juniper junos 19.4 • juniper junos 20.1

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References