CVE:CVE-2021-31353
CNNVD:CNNVD-202110-967
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。
Juniper Networks Junos OS 存在安全漏洞，该漏洞源于瞻博网络 Junos OS 和 Junos OS Evolved 中的异常处理不当漏洞允许攻击者注入特定的 BGP 更新，导致路由协议守护程序 (RPD) 崩溃并重新启动，从而导致拒绝服务 (DoS)。 BGP 更新的持续接收和处理将创建持续的拒绝服务 (DoS) 条件。
solution:Upgrade juniper junos to a higher version than 19.3:r3-s2,19.4:r3-s3,20.2:r2-s3,20.2:r3,20.2:r3-s1,20.3:r2,20.3:r2-s1,20.4:r2,20.4:r2-s1,21.1:r1,21.1:r1-s1,and avoid the version 19.3:r3-s2,19.4:r3-s3,20.2:r2-s3,20.2:r3,20.2:r3-s1,20.3:r2,20.3:r2-s1,20.4:r2,20.4:r2-s1,21.1:r1,21.1:r1-s1; Upgrade juniper junos_os_evolved to a higher version than 20.3,20.4:r1,20.4:r1-s1,20.4:r1-s2,20.4:r2,20.4:r2-s1,20.4:r2-s2,21.1:r1,21.1:r1-s1,21.2:r1,21.2:r1-s1,and avoid the version (,20.3],20.4:r1,20.4:r1-s1,20.4:r1-s2,20.4:r2,20.4:r2-s1,20.4:r2-s2,21.1:r1,21.1:r1-s1,21.2:r1,21.2:r1-s1