CVE-2019-1601

Cisco NX-OS Software Unauthorized Filesystem Access 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 gain read and write access to a critical configuration file. The vulnerability is due to a failure to impose strict filesystem permissions on the targeted device. An attacker could exploit this vulnerability by accessing and modifying restricted files. A successful exploit could allow an attacker to use the content of this configuration file to bypass authentication and log in as any user of the device. MDS 9000 Series Multilayer Switches are affected in versions prior to 6.2(25), 8.1(1b), and 8.3(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I4(9) and 7.0(3)I7(4). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(10) and 7.0(3)I7(4). Nexus 3600 Platform Switches are affected in versions prior to 7.0(3)F3(5). Nexus 2000, 5500, 5600, and 6000 Series Switches are affected in versions prior to 7.1(5)N1(1b) and 7.3(3)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 6.2(22), 7.3(3)D1(1), and 8.2(3). Nexus 9000 Series Switches-Standalone are affected in versions prior to 7.0(3)I4(9) and 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 obtener acceso de lectura y escritura a un archivo de configuración crítico. La vulnerabilidad se debe a un fallo para imponer permisos de "filesystem" estrictos en el dispositivo objetivo. Un atacante podría explotar esta vulnerabilidad modificando y accediendo a los archivos restringidos. Su explotación con éxito podría permitir a un atacante utilizar el contenido de este archivo de configuración para omitir una autenticación e iniciar sesión como cualquier usuario del dispositivo. Los switches de MDS 9000 Series Multilayer se ven afectados en versiones anteriores a las 6.2(25), 8.1(1b) y 8.3(1). Los switches de Nexus 3000 Series se ven afectados en versiones anteriores a las 7.0(3)I4(9) y 7.0(3)I7(4). Los switches de Nexus 3500 Platform se ven afectados en versiones anteriores a la 6.0(2)A8(10) y 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, en sus series 5500, 5600 y 6000, se ven afectados en versiones anteriores a las 7.1(5)N1(1b) y 7.3(3)N1(1). Los switches de Nexus, en sus series 7000 y 7700, se ven afectados en versiones anteriores a las 6.2(22), 7.3(3)D1(1) y 8.2(3). Los switches de Nexus 9000 Series-Standalone se ven afectados en versiones anteriores a las 7.0(3)I4(9) y 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-284: Improper Access Control
CWE-732: Incorrect Permission Assignment for Critical Resource

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107404	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-file-access	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"	>= 8.2 < 8.3\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 8.2 < 8.3\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Mds 9000 Search vendor "Cisco" for product "Mds 9000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.0\(3\) < 7.0\(3\)i7\(4\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\) < 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\(3\)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\(3\)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\(3\)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\(3\)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"	>= 7.3 < 8.1\(1b\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 8.1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Mds 9000 Search vendor "Cisco" for product "Mds 9000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 6.2\(25\) Search vendor "Cisco" for product "Nx-os" and version " < 6.2\(25\)"	-	Affected	in	Cisco Search vendor "Cisco"	Mds 9000 Search vendor "Cisco" for product "Mds 9000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.0\(3\)i4\(9\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i4\(9\)"	-	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"	>= 8.2 < 8.3\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 8.2 < 8.3\(1\)"	-	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 < 8.3\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 8.2 < 8.3\(1\)"	-	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"	>= 7.2 < 7.3\(3\)d1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)d1\(1\)"	-	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"	>= 7.2 < 7.3\(3\)d1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)d1\(1\)"	-	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
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.0\(3\)i4\(9\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i4\(9\)"	-	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"	< 6.0\(2\)a8\(10\) Search vendor "Cisco" for product "Nx-os" and version " < 6.0\(2\)a8\(10\)"	-	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"	>= 7.2 < 7.3\(3\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 2000 Search vendor "Cisco" for product "Nexus 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.2 < 7.3\(3\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5500 Search vendor "Cisco" for product "Nexus 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.2 < 7.3\(3\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5600 Search vendor "Cisco" for product "Nexus 5600"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 7.2 < 7.3\(3\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.2 < 7.3\(3\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 6000 Search vendor "Cisco" for product "Nexus 6000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.1\(5\)n1\(1b\) Search vendor "Cisco" for product "Nx-os" and version " < 7.1\(5\)n1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 2000 Search vendor "Cisco" for product "Nexus 2000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.1\(5\)n1\(1b\) Search vendor "Cisco" for product "Nx-os" and version " < 7.1\(5\)n1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5500 Search vendor "Cisco" for product "Nexus 5500"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.1\(5\)n1\(1b\) Search vendor "Cisco" for product "Nx-os" and version " < 7.1\(5\)n1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 5600 Search vendor "Cisco" for product "Nexus 5600"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	< 7.1\(5\)n1\(1b\) Search vendor "Cisco" for product "Nx-os" and version " < 7.1\(5\)n1\(1b\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 6000 Search vendor "Cisco" for product "Nexus 6000"	-	-	Safe
Cisco Search vendor "Cisco"	Nx-os Search vendor "Cisco" for product "Nx-os"	>= 8.0 < 8.1\(2\) Search vendor "Cisco" for product "Nx-os" and version " >= 8.0 < 8.1\(2\)"	-	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"	>= 8.0 < 8.1\(2\) Search vendor "Cisco" for product "Nx-os" and version " >= 8.0 < 8.1\(2\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 7700 Search vendor "Cisco" for product "Nexus 7700"	-	-	Safe