Cisco NX-OS Incorrect Authorization(CVE-2024-20291)

medium Tenable OT Security Plugin ID 503222

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A vulnerability in the access control list (ACL) programming for port channel subinterfaces of Cisco Nexus 3000 and 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, remote attacker to send traffic that should be blocked through an affected device.
This vulnerability is due to incorrect hardware programming that occurs when configuration changes are made to port channel member ports. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access network resources that should be protected by an ACL that was applied on port channel subinterfaces.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

http://www.nessus.org/u?f87df2e3

Plugin Details

Severity: Medium

ID: 503222

Version: 1.1

Type: remote

Family: Tenable.ot

Published: 5/6/2025

Updated: 5/6/2025

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 2.4

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Vulnerability Information

CPE: cpe:/o:cisco:nx-os:9.3%2810%29, cpe:/o:cisco:nx-os:9.3%2812%29, cpe:/o:cisco:nx-os:9.3%2811%29

Required KB Items: Tenable.ot/Cisco

Exploit Ease: No known exploits are available

Patch Publication Date: 2/29/2024

Vulnerability Publication Date: 2/29/2024

Reference Information

CVE: CVE-2024-20291

CWE: 284, 863