CVE-2020-1670

Summary

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 Software

VendorProductVersion RangeStatus
Juniper NetworksJunos OS17.3 < 17.3R3-S9affected
Juniper NetworksJunos OS17.4 < 17.4R2-S11, 17.4R3-S2affected
Juniper NetworksJunos OS18.1 < 18.1R3-S10affected
Juniper NetworksJunos OS18.2 < 18.2R3-S4affected
Juniper NetworksJunos OS18.3 < 18.3R2-S4, 18.3R3-S2affected
Juniper NetworksJunos OS18.4 < 18.4R2-S4, 18.4R3-S2affected
Juniper NetworksJunos OS19.1 < 19.1R2-S2, 19.1R3-S1affected
Juniper NetworksJunos OS19.2 < 19.2R1-S5, 19.2R2-S1, 19.2R3affected
Juniper NetworksJunos OS19.3 < 19.3R2-S4, 19.3R3affected
Juniper NetworksJunos OS19.4 < 19.4R1-S3, 19.4R2affected
Juniper NetworksJunos OS20.1 < 20.1R1-S3, 20.1R2affected

Weaknesses

  • CWE-400: CWE-400 Uncontrolled Resource Consumption

Workarounds

There are no viable workarounds for this issue.

ADP Enrichment

CVE Program Container

Additional References

References