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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History
Thu, 21 Nov 2024 20:15:00 +0000
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MITRE
Status: PUBLISHED
Assigner: cisco
Published: 2019-08-29T21:50:14.241461Z
Updated: 2024-11-21T19:15:02.726Z
Reserved: 2018-12-06T00:00:00
Link: CVE-2019-1977
Vulnrichment
Updated: 2024-08-04T18:35:51.847Z
NVD
Status : Modified
Published: 2019-08-30T09:15:20.553
Modified: 2024-11-21T04:37:48.753
Link: CVE-2019-1977
Redhat
No data.