CVE-2019-1604

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 user account management interface of Cisco NX-OS Software could allow an authenticated, local attacker to gain elevated privileges on an affected device. The vulnerability is due to an incorrect authorization check of user accounts and their associated Group ID (GID). An attacker could exploit this vulnerability by taking advantage of a logic error that will permit the use of higher privileged commands than what is necessarily assigned. A successful exploit could allow an attacker to execute commands with elevated privileges on the underlying Linux shell of an affected device. Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22), 8.2(3), and 8.3(2). 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 la interfaz de gestión de cuentas de usuario del software NX-OS de Cisco podría permitir a un atacante local autenticado obtener privilegios escalados en un dispositivo afectado. La vulnerabilidad se deba a una comprobación de autorización incorrecta de las cuentas de usuario y su grupo ID asociado (GID). Un atacante podría explotar esta vulnerabilidad, aprovechando un error de lógica que permite el uso de comandos con privilegios más altos de los que están necesariamente asignados. Si se explota esta vulnerabilidad con éxito, el atacante podría ejecutar comandos con privilegios elevados en el shell Linux subyacente de un dispositivo afectado. Los switches de Nexus, en sus series 7000 y 7700, se ven afectados en versiones anteriores a las 6.2(22), 8.2(3) y 8.3(2). 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

CVSS Scores

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

Privileges Required

Low

User Interaction

Required

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-285: Improper Authorization
CWE-863: Incorrect Authorization

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107323	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-privesca	2020-10-05

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\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " < 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\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i7\(4\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 3500 Search vendor "Cisco" for product "Nexus 3500"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.0\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " < 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\(5\) Search vendor "Cisco" for product "Nx-os" and version " < 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\(3\)f3\(5\) Search vendor "Cisco" for product "Nx-os" and version " < 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"	> 8.2\(3\) < 8.3\(2\) Search vendor "Cisco" for product "Nx-os" and version " > 8.2\(3\) < 8.3\(2\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7000 Search vendor "Cisco" for product "Nexus 7000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	> 8.2\(3\) < 8.3\(2\) Search vendor "Cisco" for product "Nx-os" and version " > 8.2\(3\) < 8.3\(2\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7700 Search vendor "Cisco" for product "Nexus 7700"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	> 6.22\(22\) < 8.2\(3\) Search vendor "Cisco" for product "Nx-os" and version " > 6.22\(22\) < 8.2\(3\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7000 Search vendor "Cisco" for product "Nexus 7000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	> 6.22\(22\) < 8.2\(3\) Search vendor "Cisco" for product "Nx-os" and version " > 6.22\(22\) < 8.2\(3\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7700 Search vendor "Cisco" for product "Nexus 7700"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 6.2\(22\) Search vendor "Cisco" for product "Nx-os" and version " < 6.2\(22\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7000 Search vendor "Cisco" for product "Nexus 7000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 6.2\(22\) Search vendor "Cisco" for product "Nx-os" and version " < 6.2\(22\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7700 Search vendor "Cisco" for product "Nexus 7700"	-	-	Safe