Cisco NX-OS Software Anycast Gateway Invalid ARP Vulnerability

A vulnerability in the anycast gateway feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a device to learn invalid Address Resolution Protocol (ARP) entries. The ARP entries are for nonlocal IP addresses for the subnet.

The vulnerability is due to improper validation of a received gratuitous ARP (GARP) request. An attacker could exploit this vulnerability by sending a malicious GARP packet on the local subnet to cause the ARP table on the device to become corrupted. A successful exploit could allow the attacker to populate the ARP table with incorrect entries, which could lead to traffic disruptions.

Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp

Security Impact Rating: Medium

CVE: CVE-2020-3174

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You can enable the integration from the upper right after you have signed into your e File Cabinet Online account. Enable the integration from the menu shown below. After clicking ShareFile, you may enter the login information associated with your account.

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Once enabled and successfully linked, you can manage files without compromising security, as well as share files using the ShareFile Email System from the Share drop-down menu.

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