CVE-2019-1605

Cisco NX-OS Software NX-API Arbitrary Code Execution Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability in the NX-API feature of Cisco NX-OS Software could allow an authenticated, local attacker to execute arbitrary code as root. The vulnerability is due to incorrect input validation in the NX-API feature. An attacker could exploit this vulnerability by sending a crafted HTTP or HTTPS request to an internal service on an affected device that has the NX-API feature enabled. A successful exploit could allow the attacker to cause a buffer overflow and execute arbitrary code as root. Note: The NX-API feature is disabled by default. MDS 9000 Series Multilayer Switches are affected in versions prior to 8.1(1). Nexus 3000 Series Switches are affected in versions prior to 7.0(3)I4(8) and 7.0(3)I7(1). Nexus 3500 Platform Switches are affected in versions prior to 6.0(2)A8(8). 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 7.3(2)N1(1). Nexus 7000 and 7700 Series Switches are affected in versions prior to 7.3(3)D1(1). Nexus 9000 Series Switches in Standalone NX-OS Mode are affected in versions prior to 7.0(3)I4(8) and 7.0(3)I7(1). Nexus 9500 R-Series Line Cards and Fabric Modules are affected in versions prior to 7.0(3)F3(5).

Una vulnerabilidad en la funcionalidad NX-API del software NX-OS de Cisco podría permitir a un atacante local autenticado ejecutar código arbitrario como root. Esta vulnerabilidad se debe a la incorrecta validación de entradas en la funcionalidad NX-API. Un atacante podría explotar esta vulnerabilidad mandando una petición HTTP o HTTPS a un servicio interno en un dispositivo afectado que tenga la funcionalidad NX-API habilitada. Un exploit con éxito podría permitir que el atacante provoque un desbordamiento de búfer y ejecute código arbitrario como root. Nota: La funcionalidad NX-API está deshabilitada por defecto. Los switches de MDS 9000 Series Multilayer se ven afectados en versiones anteriores a la 8.1(1). Los switches de Nexus 3000 Series se ven afectados en versiones anteriores a las 7.0(3)I4(8) y 7.0(3)I7(1). Los switches de Nexus 3500 Platform se ven afectados en versiones anteriores a la 6.0(2)A8(8). 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 2000, 5500, 5600 y 6000, se ven afectados en versiones anteriores a las 7.3(2)N1(1). Los switches de Nexus, en sus series 7000 y 7700, se ven afectados en versiones anteriores a la 7.3(3)D1(1). Los switches de Nexus 9000 en modo Standalone NX-OS se ven afectados en versiones anteriores a las 7.0(3)I4(8) y 7.0(3)I7(1). 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:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-12-06 CVE Reserved
2019-03-08 CVE Published
2023-03-08 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/107313	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190306-nxos-api-ex	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"	>= 7.3 < 8.1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 8.1\(1\)"	-	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"	< 6.0\(2\)a8\(8\) Search vendor "Cisco" for product "Nx-os" and version " < 6.0\(2\)a8\(8\)"	-	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\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)i5 < 7.0\(3\)i7\(1\)"	-	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"	>= 7.2 < 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"	< 7.0\(3\)i4\(8\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i4\(8\)"	-	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\(3\)i5 < 7.0\(3\)i7\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.0\(3\)i5 < 7.0\(3\)i7\(1\)"	-	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"	< 7.0\(3\)i4\(8\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i4\(8\)"	-	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\(3\)i4\(8\) Search vendor "Cisco" for product "Nx-os" and version " < 7.0\(3\)i4\(8\)"	-	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"	>= 7.3 < 7.3\(2\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 7.3\(2\)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"	>= 7.3 < 7.3\(2\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 7.3\(2\)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"	>= 7.3 < 7.3\(2\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 7.3\(2\)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"	>= 7.3 < 7.3\(2\)n1\(1\) Search vendor "Cisco" for product "Nx-os" and version " >= 7.3 < 7.3\(2\)n1\(1\)"	-	Affected	in	Cisco Search vendor "Cisco"	Nexus 6000 Search vendor "Cisco" for product "Nexus 6000"	-	-	Safe