CVE-2024-20291

Severity Score

5.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

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.

Una vulnerabilidad en la programación de la lista de control de acceso (ACL) para las subinterfaces del canal de puerto de los conmutadores Cisco Nexus de las series 3000 y 9000 en modo NX-OS independiente podría permitir que un atacante remoto no autenticado envíe tráfico que debería bloquearse a través de un dispositivo afectado. Esta vulnerabilidad se debe a una programación de hardware incorrecta que ocurre cuando se realizan cambios de configuración en los puertos miembros del canal de puertos. Un atacante podría aprovechar esta vulnerabilidad intentando enviar tráfico a través de un dispositivo afectado. Un exploit exitoso podría permitir al atacante acceder a recursos de red que deberían estar protegidos por una ACL que se aplicó en las subinterfaces del canal de puerto.

*Credits: N/A

CVSS Scores

Ciscov3.1 5.8

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2023-11-08 CVE Reserved
2024-02-28 CVE Published
2024-02-29 EPSS Updated
2024-03-09 First Exploit
2024-08-09 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-284: Improper Access Control

CAPEC

References (2)

URL	Tag	Source
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-po-acl-TkyePgvL

URL	Date	SRC
https://github.com/Instructor-Team8/CVE-2024-20291-POC	2024-03-09

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Cisco Search vendor "Cisco"		Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software"				9.3 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "9.3"		en		Affected
Cisco Search vendor "Cisco"		Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software"				9.3 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "9.3"		en		Affected
Cisco Search vendor "Cisco"		Cisco NX-OS Software Search vendor "Cisco" for product "Cisco NX-OS Software"				9.3 Search vendor "Cisco" for product "Cisco NX-OS Software" and version "9.3"		en		Affected