CVE-2020-3174

Cisco NX-OS Software Anycast Gateway Invalid ARP Vulnerability

Description

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.

Category

4.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory cisco.com
Affected: Cisco Cisco NX-OS Software 7.3(2)D1(1d)
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-3174?
CVE-2020-3174 has been scored as a medium severity vulnerability.
How to fix CVE-2020-3174?
To fix CVE-2020-3174, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-3174 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-3174 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-3174?
CVE-2020-3174 affects Cisco Cisco NX-OS Software 7.3(2)D1(1d).
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