CVE-2020-3174

published 2020-02-26

CVE-2020-3174: 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…

Priority P4 21 medium 4.7 CVSS 3.1

AV A AC L PR N UI N S C C N I L A N

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.

Affected

5 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_nx-os_software_7.3_d1	>= unspecified < n/a	n/a
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—
cisco	nx-os	—	—

CVSS provenance

nvd v3.1 4.7 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

nvd v3.0 4.7 MEDIUM CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

nvd v2.0 3.3 LOW AV:A/AC:L/Au:N/C:N/I:P/A:N

vendor_cisco 4.7 MEDIUM

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