Cisco Nexus 9000 Series Fabric Switches ACI Mode Border Leaf Endpoint Learning Vulnerability

A vulnerability within the Endpoint Learning feature of Cisco Nexus 9000 Series Switches running in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an endpoint device in certain circumstances. The vulnerability is due to improper endpoint learning when packets are received on a specific port from outside the ACI fabric and destined to an endpoint located on a border leaf when Disable Remote Endpoint Learning has been enabled. This can result in a Remote (XR) entry being created for the impacted endpoint that will become stale if the endpoint migrates to a different port or leaf switch. This results in traffic not reaching the impacted endpoint until the Remote entry can be relearned by another mechanism.

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Cisco Nexus 9000 Series Switches NX-OS ACI Software 安全漏洞

Cisco Nexus 9000 Series Switches是美国思科（Cisco）公司的一款9000系列交换机。NX-OS ACI Software是运行在其中一套使用在Cisco网络设备中的操作系统。 Cisco Nexus 9000 Series Switches（运行在Application Centric Infrastructure模式下）中的NX-OS ACI Software 12.2(4M)之前版本、13.1(2u)之前版本和13.2(1l)之前版本存在安全漏洞，该漏洞。远程攻击者可

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