All the vulnerabilites related to Cisco - Cisco Nexus 9000 Series Fabric Switches in ACI
cve-2019-1977
Vulnerability from cvelistv5
Published
2019-08-29 21:50
Modified
2024-11-21 19:15
Severity ?
EPSS score ?
Summary
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.
References
▼ | URL | Tags |
---|---|---|
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190828-nexus-aci-dos | vendor-advisory, x_refsource_CISCO |
Impacted products
Vendor | Product | Version | |
---|---|---|---|
▼ | Cisco | Cisco Nexus 9000 Series Fabric Switches in ACI |
Version: unspecified < 12.2(4M) |
|
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