CVE-2023-20012 MEDIUM

CVE-2023-20012: Cisco Nexus 9300-FX3 Series Fabric Extender for UCS Fabric Interconnects Authentication Bypass Vulnerability

Vendor Cisco
Product Cisco Unified Computing System (Managed)
Weakness CWE-287 · Improper authentication
Published February 23, 2023
Last update October 25, 2024

CVSS base score

5.3/10
Attack vector Physical
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

What the vulnerability does

01Description

A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability is due to the improper implementation of the password validation function. An attacker could exploit this vulnerability by logging in to the console port on an affected device. A successful exploit could allow the attacker to bypass authentication and execute a limited set of commands local to the FEX, which could cause a device reboot and denial of service (DoS) condition.

Key dates

02Disclosure timeline

February 23, 2023 CVE published
October 25, 2024 Record updated