CVE-2019-1602

Cisco NX-OS Software Privilege Escalation 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 the filesystem permissions of Cisco NX-OS Software could allow an authenticated, local attacker to access sensitive data that could be used to elevate their privileges to administrator. The vulnerability is due to improper implementation of filesystem permissions. An attacker could exploit this vulnerability by logging in to the CLI of an affected device, accessing a specific file, and leveraging this information to authenticate to the NX-API server. A successful exploit could allow an attacker to make configuration changes as administrator. Note: NX-API is disabled by default. Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 9000 Series Switches-Standalone are affected in versions prior to 7.0(3)I7(4). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).

Una vulnerabilidad en los permisos de "filesystem" del software NX-OS de Cisco podría permitir a un atacante local autenticado acceder a datos sensibles que podrían utilizarse para elevar sus propios privilegios a los del administrador. Esta vulnerabilidad se debe a la implementación incorrecta de permisos de "filesystem". Un atacante podría explotar esta vulnerabilidad iniciando sesión en la CLI de un dispositivo afectado, accediendo a un archivo específico y aprovechando esta información para autenticarse en el servidor NX-API. Su explotación con éxito podría permitir que el atacante realice cambios de configuración como el administrador. Nota: NX-API está deshabilitado por defecto. Los switches de Nexus 3000 Series se ven afectados en versiones anteriores a la 7.0(3)I7(4). Los switches de Nexus 3500 Platform se ven afectados en versiones anteriores a la 7.0(3)I7(4). Los switches de Nexus 3600 Platform se ven afectados en versiones anteriores a la 7.0(3)F3(5). Los switches de Nexus 9000 Series-Standalone se ven afectados en versiones anteriores a la 7.0(3)I7(4). Los switches de 9500 R-Series Line Cards y Fabric Modules se ven afectados en versiones anteriores a la 7.0(3)F3(5).

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

CWE

CWE-264: Permissions, Privileges, and Access Controls

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107332	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-escalation	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"	>= 7.0\(3\)i5 < 7.0\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)i5 < 7.0\(3\)i7\(4\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3000 Search vendor "Cisco" for product "Nexus 3000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.0\(3\)i5 < 7.0\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)i5 < 7.0\(3\)i7\(4\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 9000 Search vendor "Cisco" for product "Nexus 9000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.0\(3\)f3 < 7.0\(3\)f3\(5\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)f3 < 7.0\(3\)f3\(5\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3600 Search vendor "Cisco" for product "Nexus 3600"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.0\(3\)f1 < 7.0\(3\)f3\(5\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)f1 < 7.0\(3\)f3\(5\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 9500 Search vendor "Cisco" for product "Nexus 9500"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.0\(3\) < 7.0\(3\)f3\(5\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\) < 7.0\(3\)f3\(5\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3500 Search vendor "Cisco" for product "Nexus 3500"	-	-	Safe