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 malicious user 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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cisco nx-os 12.3\\(1h\\) |
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cisco nx-os 13.1\\(2m\\) |
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cisco nx-os 13.1\\(2o\\) |
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cisco nx-os 13.1\\(2p\\) |
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