cbcvebase.
CVE-2020-1670
published 2020-10-16

CVE-2020-1670: 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…

medium6.5CVSS 3.1
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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

23 ranges
VendorProductVersion rangeFixed in
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos
juniperjunos_os
juniper_networksjunos_os>= 17.3 < 17.3R3-S917.3R3-S9
juniper_networksjunos_os>= 17.4 < 17.4R2-S11, 17.4R3-S217.4R2-S11, 17.4R3-S2
juniper_networksjunos_os>= 18.1 < 18.1R3-S1018.1R3-S10
juniper_networksjunos_os>= 18.2 < 18.2R3-S418.2R3-S4
juniper_networksjunos_os>= 18.3 < 18.3R2-S4, 18.3R3-S218.3R2-S4, 18.3R3-S2
juniper_networksjunos_os>= 18.4 < 18.4R2-S4, 18.4R3-S218.4R2-S4, 18.4R3-S2
juniper_networksjunos_os>= 19.1 < 19.1R2-S2, 19.1R3-S119.1R2-S2, 19.1R3-S1
juniper_networksjunos_os>= 19.2 < 19.2R1-S5, 19.2R2-S1, 19.2R319.2R1-S5, 19.2R2-S1, 19.2R3
juniper_networksjunos_os>= 19.3 < 19.3R2-S4, 19.3R319.3R2-S4, 19.3R3
juniper_networksjunos_os>= 19.4 < 19.4R1-S3, 19.4R219.4R1-S3, 19.4R2
juniper_networksjunos_os>= 20.1 < 20.1R1-S3, 20.1R220.1R1-S3, 20.1R2