发布日期：2021-10-13
更新日期：2021-10-20

受影响系统：

Juniper Networks EX2300 Series < 18.1R3-S13
Juniper Networks EX2300 Series 20.4
Juniper Networks EX2300 Series 20.3
Juniper Networks EX2300 Series 20.2
Juniper Networks EX2300 Series 20.1
Juniper Networks EX2300 Series 19.4
Juniper Networks EX2300 Series 19.3
Juniper Networks EX2300 Series 19.2
Juniper Networks EX2300 Series 19.1
Juniper Networks EX2300 Series 18.4
Juniper Networks EX2300 Series 18.3
Juniper Networks EX2300 Series 18.2
Juniper Networks Junos OS EX3400 Series < 18.1R3-S13
Juniper Networks Junos OS EX3400 Series 20.4
Juniper Networks Junos OS EX3400 Series 20.3
Juniper Networks Junos OS EX3400 Series 20.2
Juniper Networks Junos OS EX3400 Series 20.1
Juniper Networks Junos OS EX3400 Series 19.4
Juniper Networks Junos OS EX3400 Series 19.3
Juniper Networks Junos OS EX3400 Series 19.2
Juniper Networks Junos OS EX3400 Series 19.1
Juniper Networks Junos OS EX3400 Series 18.4
Juniper Networks Junos OS EX3400 Series 18.3
Juniper Networks Junos OS EX3400 Series 18.2
Juniper Networks Junos OS ACX710 < 18.1R3-S13
Juniper Networks Junos OS ACX710 20.4
Juniper Networks Junos OS ACX710 20.3
Juniper Networks Junos OS ACX710 20.2
Juniper Networks Junos OS ACX710 20.1
Juniper Networks Junos OS ACX710 19.4
Juniper Networks Junos OS ACX710 19.3
Juniper Networks Junos OS ACX710 19.2
Juniper Networks Junos OS ACX710 19.1
Juniper Networks Junos OS ACX710 18.4
Juniper Networks Junos OS ACX710 18.3
Juniper Networks Junos OS ACX710 18.2

描述：

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CVE(CAN) ID: CVE-2021-31368

Junos OS是Juniper Networks硬件路由器中使用的基于FreeBSD的操作系统。它是Juniper网络路由，交换和安全设备中使用的操作系统。
Juniper Networks Junos OS存在资源管理错误漏洞。攻击者可利用该漏洞通过发送大量流量导致100%CPU负载和设备无响应。

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建议：

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厂商补丁：

Juniper Networks
----------------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

https://kb.juniper.net/JSA11230

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