CVE-2020-1668 (GCVE-0-2020-1668)

Vulnerability from cvelistv5 – Published: 2020-10-16 20:31 – Updated: 2024-09-16 18:18
VLAI
Title
Junos OS: EX2300 Series: High CPU load due to receipt of specific multicast packets on layer 2 interface
Summary
On Juniper Networks EX2300 Series, receipt of a stream of specific multicast packets by the layer2 interface can cause high CPU load, which could lead to traffic interruption. This issue occurs when multicast packets are received by the layer 2 interface. To check if the device has high CPU load due to this issue, the administrator can issue the following command: user@host> show chassis routing-engine Routing Engine status: ... Idle 2 percent the "Idle" value shows as low (2 % in the example above), and also the following command: user@host> show system processes summary ... PID USERNAME PRI NICE SIZE RES STATE TIME WCPU COMMAND 11639 root 52 0 283M 11296K select 12:15 44.97% eventd 11803 root 81 0 719M 239M RUN 251:12 31.98% fxpc{fxpc} the eventd and the fxpc processes might use higher WCPU percentage (respectively 44.97% and 31.98% in the above example). This issue affects Juniper Networks Junos OS on EX2300 Series: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S4; 19.1 versions prior to 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R3; 19.3 versions prior to 19.3R2-S4, 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2-S1, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
juniper CNA
References
URL Tags
https://kb.juniper.net/JSA11065 x_refsource_CONFIRM
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 18.1 , < 18.1R3-S11 (custom)
Affected: 18.2 , < 18.2R3-S5 (custom)
Affected: 18.3 , < 18.3R2-S4, 18.3R3-S3 (custom)
Affected: 18.4 , < 18.4R2-S5, 18.4R3-S4 (custom)
Affected: 19.1 , < 19.1R3-S2 (custom)
Affected: 19.2 , < 19.2R1-S5, 19.2R3 (custom)
Affected: 19.3 , < 19.3R2-S4, 19.3R3 (custom)
Affected: 19.4 , < 19.4R1-S3, 19.4R2-S1, 19.4R3 (custom)
Affected: 20.1 , < 20.1R1-S2, 20.1R2 (custom)
Create a notification for this product.
Date Public
2020-10-14 00:00
Show details on NVD website
To clipboard 

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