CVE-2019-1591

Cisco Nexus 9000 Series Fabric Switches Application Centric Infrastructure Mode Shell Escape Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

A vulnerability in a specific CLI command implementation of Cisco Nexus 9000 Series ACI Mode Switch Software could allow an authenticated, local attacker to escape a restricted shell on an affected device. The vulnerability is due to insufficient sanitization of user-supplied input when issuing a specific CLI command with parameters on an affected device. An attacker could exploit this vulnerability by authenticating to the device CLI and issuing certain commands. A successful exploit could allow the attacker to escape the restricted shell and execute arbitrary commands with root-level privileges on the affected device. This vulnerability only affects Cisco Nexus 9000 Series ACI Mode Switches that are running a release prior to 14.0(3d).

Una vulnerabilidad en la implementación de un comando de la interfaz de la línea de comandos (CLI) específico de Cisco Nexus 9000 Series ACI Mode Switch Software podría permitir a un atacante local autenticado escapar de un shell restringido en un dispositivo afectado. Esta vulnerabilidad se debe a un saneamiento insuficiente de entradas proporcionadas por el usuario al enviar un comando de CLI específico con parámetros en un dispositivo afectado. Un atacante podría explotar esta vulnerabilidad autenticándose en el CLI del dispositivo y enviando determinados comandos. Un exploit con éxito podría permitir que el atacante escape del shell restringido y ejecute comandos arbitrarios con privilegios root en el dispositivo afectado. Esta vulnerabilidad solo afecta a Cisco Nexus 9000 Series ACI Mode Switches que estén ejecutando una distribución anterior a la 14.0(3d).

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

None

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-03-06 CVE Published
2023-03-08 EPSS Updated
2024-11-20 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107311	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-aci-shell-escape	2020-10-08

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"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 14.0\(3d\) Search vendor "Cisco" for product "Nx-os" and version " < 14.0\(3d\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 9000 Search vendor "Cisco" for product "Nexus 9000"	-	-	Safe