CVE-2021-1231 Vulnerability Details

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CVE-2021-1231 Metadata Quick Info

CVE Published: 24/02/2021 | CVE Updated: 08/11/2024 | CVE Year: 2021
Source: cisco | Vendor: Cisco | Product: Cisco NX-OS System Software in ACI Mode
Status : PUBLISHED

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CVE-2021-1231 Description

A vulnerability in the Link Layer Discovery Protocol (LLDP) for Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode could allow an unauthenticated, adjacent attacker to disable switching on a small form-factor pluggable (SFP) interface. This vulnerability is due to incomplete validation of the source of a received LLDP packet. An attacker could exploit this vulnerability by sending a crafted LLDP packet on an SFP interface to an affected device. A successful exploit could allow the attacker to disable switching on the SFP interface, which could disrupt network traffic.

Metrics

CVSS Version: 3.1 | Base Score: 4.7 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

l➤ Exploitability Metrics:
    Attack Vector (AV)* ADJACENT_NETWORK
    Attack Complexity (AC)* LOW
    Privileges Required (PR)* NONE
    User Interaction (UI)* NONE
    Scope (S)* CHANGED

l➤ Impact Metrics:
    Confidentiality Impact (C)* NONE
    Integrity Impact (I)* NONE
    Availability Impact (A)* LOW

Weakness Enumeration (CWE)

CWE-ID: CWE-284
CWE Name: CWE-284
Source: Cisco

Common Attack Pattern Enumeration and Classification (CAPEC)

CAPEC-ID:
CAPEC Description:


Source: NVD (National Vulnerability Database).